659
FNUS56 KMTR 172140
FWFMTR
FIRE WEATHER PLANNING FORECAST FOR THE SAN FRANCISCO BAY AREA AND
CENTRAL CALIFORNIA COAST
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
240 PM PDT WED SEP 17 2025
...NEAR CRITICAL CONDITIONS THROUGH TONIGHT FOR AREAS ALONG THE
CENTRAL COAST DUE TO LIGHTNING THREAT...
DISCUSSION
LAST WARM DAY TODAY BEFORE TROPICAL MOISTURE
INFILTRATES THE REGION. HINTS OF MOISTURE ALOFT FROM THE REMNANTS
OF TROPICAL DEPRESSION MARIO ARE MAKING THEIR WAY INTO THE CENTRAL
COAST REGION. AS OF WRITING, THERE HAVE BEEN A FEW SMALL SHOWERS
MAKING THEIR WAY UP THE COAST AND THE SANTA LUCIA RANGE. ACTIVITY
IS ANTICIPATED TO RAMP UP LATER TONIGHT AS INSTABILITY INCREASES.
THE CHANCE FOR DRY LIGHTING IS GREATEST IN THESE SOUTHERN ZONES
OVERNIGHT TONIGHT. BY THURSDAY MORNING, WE WILL UNDERGO A
TRANSITION TO A MORE TROPICAL-TYPE AIRMASS WITH A DEEP MOISTURE
PROFILE SUPPORTIVE OF THUNDERSTORMS WITH AMPLE WETTING RAIN. THE
BIGGEST THREAT DURING THIS TIME WILL BE GUSTY AND ERRATIC WINDS
AROUND THE THUNDERSTORM ENVIRONMENT, AND OF COURSE ANY LIGHTNING
STRIKES THAT HAPPEN TO STRIKE AWAY FROM THE CORE. THIS ACTIVITY
GRADUALLY MOVES NORTHWARD THROUGH THURSDAY EVENING WITH THE CHANCE
FOR LIGHTNING DECREASING WITH LATITUDE.
NOTE : ALL WINDS ARE 20-FOOT WINDS UNLESS OTHERWISE SPECIFIED.
THUNDERSTORMS IMPLY STRONG, GUSTY AND ERRATIC WINDS.
CAZ505-180945-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....53-58.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........80-100 PERCENT.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........800 FT ASL.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....64-72.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY........80-90 PERCENT.
* 24 HR TREND......40 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...15 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE EVENING. ISOLATED THUNDERSTORMS THROUGH THE NIGHT. CHANCE
OF RAIN SHOWERS AFTER MIDNIGHT. PATCHY FOG IN THE LATE EVENING
AND OVERNIGHT.
* MIN TEMPERATURE.....53-58.
* MAX HUMIDITY........90-100 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................10%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. PATCHY FOG EARLY IN THE
MORNING. SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....65-73.
* MIN HUMIDITY........85-95 PERCENT.
* 20-FOOT WINDS.......SOUTH WINDS 5 TO 10 MPH.
* CWR.................10%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY. PATCHY FOG. SOUTHWEST WINDS 5 TO
15 MPH. LOWS IN THE UPPER 50S.
SATURDAY
PARTLY CLOUDY. PATCHY FOG. WEST WINDS 5 TO 15 MPH.
LOWS IN THE MID TO UPPER 50S. HIGHS IN THE 60S TO LOWER 70S.
SUNDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
MID 50S TO LOWER 60S. HIGHS IN THE 60S TO MID 70S.
MONDAY
PARTLY CLOUDY. WEST WINDS 5 TO 15 MPH. LOWS IN THE MID
50S TO LOWER 60S. HIGHS IN THE UPPER 60S TO MID 70S.
CAZ503-180945-
SONOMA COASTAL RANGE-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....59-66.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY........50-70 PERCENT.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......
* RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....77-85.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY........45-55 PERCENT.
* 24 HR TREND......30 PERCENT WETTER.
* 20-FOOT WINDS.......
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 5 MPH SHIFTING TO THE
SOUTH 5 TO 10 MPH IN THE AFTERNOON.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
AND ISOLATED THUNDERSTORMS.
* MIN TEMPERATURE.....55-60.
* MAX HUMIDITY........70-90 PERCENT.
* 20-FOOT WINDS.......
* RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 10 MPH SHIFTING TO THE
SOUTHEAST UP TO 5 MPH AFTER MIDNIGHT.
* CWR.................10%.
FRIDAY
* SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE MORNING.
* MAX TEMPERATURE.....74-82.
* MIN HUMIDITY........55-65 PERCENT.
* 20-FOOT WINDS.......
* RIDGES/UPR SLOPES....SOUTHEAST WINDS UP TO 5 MPH.
* CWR.................10%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY. SOUTHWEST WINDS UP TO 10 MPH. LOWS
IN THE MID 50S TO LOWER 60S.
SATURDAY
MOSTLY CLEAR. WEST WINDS UP TO 10 MPH. LOWS IN THE
MID 50S TO LOWER 60S. HIGHS IN THE MID 70S TO LOWER 80S.
SUNDAY
CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE 50S TO
MID 60S. HIGHS IN THE 70S TO UPPER 80S.
MONDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
UPPER 50S TO MID 60S. HIGHS IN THE 80S.
CAZ502-180945-
MARIN COASTAL RANGE-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....53-58 EXCEPT 59-64 ABOVE 2000 FEET.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........70-90 PERCENT EXCEPT 50-60 PERCENT ABOVE 2000
FEET.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE EVENING.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....72-80.
* 24 HR TREND......12 DEGREES COOLER.
* MIN HUMIDITY........60-70 PERCENT.
* 24 HR TREND......30 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE AFTERNOON.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE EVENING. ISOLATED THUNDERSTORMS THROUGH THE NIGHT. CHANCE
OF RAIN SHOWERS AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........80-100 PERCENT EXCEPT 60-70 PERCENT ABOVE
2000 FEET.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE EVENING.
* CWR.................10%.
FRIDAY
* SKY/WEATHER.........MOSTLY SUNNY. PATCHY FOG EARLY IN THE
MORNING. CHANCE OF RAIN SHOWERS IN THE MORNING. SLIGHT CHANCE OF
RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....74-81 EXCEPT 69-74 ABOVE 2000 FEET.
* MIN HUMIDITY........60-70 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 10 MPH.
* CWR.................10%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR IN THE EVENING THEN BECOMING PARTLY
CLOUDY. PATCHY FOG. WEST WINDS 5 TO 15 MPH. LOWS IN THE MID 50S
TO LOWER 60S.
SATURDAY
MOSTLY CLEAR. PATCHY FOG. WEST WINDS 5 TO 15 MPH.
LOWS IN THE MID 50S TO LOWER 60S. HIGHS IN THE 70S TO LOWER 80S.
SUNDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO MID 60S. HIGHS IN THE MID 70S TO LOWER 80S.
MONDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO MID 60S. HIGHS IN THE UPPER 70S TO MID 80S.
CAZ506-180945-
NORTH BAY INTERIOR VALLEYS-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....55-60.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........70-90 PERCENT.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....77-85.
* 24 HR TREND......12 DEGREES COOLER.
* MIN HUMIDITY........55-65 PERCENT.
* 24 HR TREND......30 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTH WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE EVENING. ISOLATED THUNDERSTORMS THROUGH THE NIGHT. CHANCE
OF RAIN SHOWERS AFTER MIDNIGHT. PATCHY FOG EARLY IN THE MORNING.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........90-100 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................20%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....75-83.
* MIN HUMIDITY........60-70 PERCENT.
* 20-FOOT WINDS.......SOUTH WINDS 5 TO 10 MPH.
* CWR.................20%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLEAR. PATCHY FOG. SOUTHWEST WINDS 5 TO 15 MPH. LOWS IN THE MID
50S TO LOWER 60S.
SATURDAY
MOSTLY CLEAR. AREAS OF FOG. WEST WINDS 5 TO 15 MPH.
LOWS IN THE MID 50S TO LOWER 60S. HIGHS IN THE MID 70S TO LOWER
80S.
SUNDAY
MOSTLY CLEAR. PATCHY FOG. WEST WINDS 5 TO 15 MPH. LOWS
IN THE MID 50S TO LOWER 60S. HIGHS IN THE UPPER 70S TO MID 80S.
MONDAY
MOSTLY CLEAR. SOUTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
MID 50S TO LOWER 60S. HIGHS IN THE 80S TO LOWER 90S.
CAZ504-180945-
NORTH BAY INTERIOR MOUNTAINS-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* MIN TEMPERATURE.....61-69.
* 24 HR TREND......4 DEGREES COOLER.
* MAX HUMIDITY........45-50 PERCENT EXCEPT 35-45 PERCENT ABOVE 2000
FEET.
* 24 HR TREND......5 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE EVENING.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....79-87.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY........40-50 PERCENT EXCEPT 30-40 PERCENT ABOVE 2000
FEET.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE AFTERNOON.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE EVENING. ISOLATED THUNDERSTORMS THROUGH THE NIGHT. CHANCE
OF RAIN SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE.....59-64.
* MAX HUMIDITY........65-85 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE EVENING.
* CWR.................20%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....74-82.
* MIN HUMIDITY........55-65 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 10 MPH.
* CWR.................20%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN CLEARING. WEST
WINDS 5 TO 15 MPH. LOWS IN THE 50S TO UPPER 60S.
SATURDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO UPPER 60S. HIGHS IN THE 70S TO MID 80S.
SUNDAY
CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S TO UPPER
60S. HIGHS IN THE 80S.
MONDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 60S
TO LOWER 70S. HIGHS IN THE 80S TO LOWER 90S.
CAZ006-180945-
SAN FRANCISCO-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....56-61.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........90-100 PERCENT.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........800 FT ASL.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.....65-73.
* 24 HR TREND......5 DEGREES COOLER.
* MIN HUMIDITY........75-85 PERCENT.
* 24 HR TREND......20 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS.
* MIN TEMPERATURE.....57-62.
* MAX HUMIDITY........90 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................10%.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF SHOWERS IN THE MORNING, THEN SLIGHT CHANCE OF SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....66-74.
* MIN HUMIDITY........75-85 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................10%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY. WEST WINDS 5 TO 15 MPH. LOWS
AROUND 60.
SATURDAY
PARTLY CLOUDY. WEST WINDS 5 TO 15 MPH. LOWS AROUND
60. HIGHS IN THE 60S TO MID 70S.
SUNDAY
PARTLY CLOUDY. WEST WINDS 10 TO 20 MPH. LOWS AROUND 60.
HIGHS IN THE 60S TO MID 70S.
MONDAY
PARTLY CLOUDY. WEST WINDS 5 TO 15 MPH. LOWS IN THE
LOWER 60S. HIGHS IN THE 70S.
CAZ509-180945-
SAN FRANCISCO PENINSULA COAST-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....54-59.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........90-100 PERCENT.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........800 FT ASL.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....67-74.
* 24 HR TREND......6 DEGREES COOLER.
* MIN HUMIDITY........75-85 PERCENT.
* 24 HR TREND......30 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG EARLY IN THE
MORNING.
* MIN TEMPERATURE.....54-59.
* MAX HUMIDITY........90-100 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................30%.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
PATCHY FOG EARLY IN THE MORNING. CHANCE OF RAIN SHOWERS IN THE
MORNING. SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....66-74.
* MIN HUMIDITY........75-85 PERCENT.
* 20-FOOT WINDS.......SOUTH WINDS 5 TO 10 MPH.
* CWR.................10%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. WEST WINDS 5 TO 15 MPH. LOWS IN THE UPPER 50S.
SATURDAY
PARTLY CLOUDY. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN
THE MID TO UPPER 50S. HIGHS IN THE 60S TO MID 70S.
SUNDAY
PARTLY CLOUDY. PATCHY FOG. NORTHWEST WINDS 5 TO 15 MPH.
LOWS IN THE MID 50S TO LOWER 60S. HIGHS IN THE UPPER 60S TO MID
70S.
MONDAY
PARTLY CLOUDY. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
MID 50S TO LOWER 60S. HIGHS IN THE 70S.
CAZ508-180945-
SAN FRANCISCO BAY SHORELINE-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....59-64.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........80-90 PERCENT.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........800 FT ASL.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....73-81.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY........65-75 PERCENT.
* 24 HR TREND......20 PERCENT WETTER.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS.
* MIN TEMPERATURE.....58-63.
* MAX HUMIDITY........90 PERCENT.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CWR.................30%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. CHANCE OF RAIN SHOWERS IN THE
MORNING, THEN SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....74-82.
* MIN HUMIDITY........65-75 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................20%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR IN THE EVENING THEN BECOMING PARTLY
CLOUDY. WEST WINDS 5 TO 15 MPH. LOWS IN THE MID 50S TO LOWER 60S.
SATURDAY
PARTLY CLOUDY. WEST WINDS 5 TO 15 MPH. LOWS IN THE
MID 50S TO LOWER 60S. HIGHS IN THE 70S.
SUNDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO MID 60S. HIGHS IN THE 70S TO LOWER 80S.
MONDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO MID 60S. HIGHS IN THE UPPER 70S TO MID 80S.
CAZ510-180945-
EAST BAY INTERIOR VALLEYS-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....60-70.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........60-80 PERCENT.
* 24 HR TREND......10 PERCENT DRIER.
* 20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 20 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.....80-88.
* 24 HR TREND......11 DEGREES COOLER.
* MIN HUMIDITY........40-50 PERCENT.
* 24 HR TREND......20 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS.
* MIN TEMPERATURE.....61-68.
* MAX HUMIDITY........80-90 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................30%.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF SHOWERS IN THE MORNING, THEN SLIGHT CHANCE OF SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....77-85.
* MIN HUMIDITY........55-65 PERCENT.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CWR.................30%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE
UPPER 50S TO MID 60S.
SATURDAY
MOSTLY CLEAR. WEST WINDS 10 TO 20 MPH. LOWS IN THE
UPPER 50S TO MID 60S. HIGHS IN THE UPPER 70S TO MID 80S.
SUNDAY
CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S TO UPPER
60S. HIGHS IN THE 80S.
MONDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 60S
TO LOWER 70S. HIGHS IN THE MID 80S TO LOWER 90S.
CAZ513-180945-
SANTA CLARA VALLEY...INCLUDING SAN JOSE-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....58-63.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........70-80 PERCENT.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH SHIFTING TO THE SOUTH
5 TO 10 MPH AFTER MIDNIGHT.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....80-85.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY........50-60 PERCENT.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTH WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................20%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS.
* MIN TEMPERATURE.....59-64.
* MAX HUMIDITY........90-100 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................40%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS THROUGH THE
DAY. PATCHY FOG EARLY IN THE MORNING.
* MAX TEMPERATURE.....79-84.
* MIN HUMIDITY........55-65 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................20%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS AROUND
60.
SATURDAY
MOSTLY CLEAR. PATCHY FOG. NORTHWEST WINDS 5 TO
15 MPH. LOWS AROUND 60. HIGHS IN THE 70S TO UPPER 80S.
SUNDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS NEAR
60. HIGHS IN THE 80S.
MONDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
UPPER 50S TO MID 60S. HIGHS IN THE 80S TO MID 90S.
CAZ512-180945-
SANTA CRUZ MOUNTAINS-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....56-64.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........55-75 PERCENT EXCEPT 53-63 PERCENT ABOVE 2000
FEET.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS UP TO 5 MPH SHIFTING TO THE
SOUTHWEST AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE EVENING.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........800 FT ASL.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....74-82.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY........55-65 PERCENT.
* 24 HR TREND......20 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE AFTERNOON.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................20%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS.
* MIN TEMPERATURE.....57-64.
* MAX HUMIDITY........75-95 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS UP TO 5 MPH IN THE EVENING
BECOMING DOWNVALLEY 2 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................40%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. CHANCE OF RAIN SHOWERS THROUGH
THE DAY. PATCHY FOG EARLY IN THE MORNING.
* MAX TEMPERATURE.....73-81.
* MIN HUMIDITY........60-70 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPVALLEY 3 TO 7 MPH BECOMING SOUTHWEST UP TO
5 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH WINDS UP TO 5 MPH.
* CWR.................20%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE
50S TO MID 60S.
SATURDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN
THE 50S TO MID 60S. HIGHS IN THE MID 70S TO LOWER 80S.
SUNDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
50S TO UPPER 60S. HIGHS IN THE MID 70S TO LOWER 80S.
MONDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
50S TO UPPER 60S. HIGHS IN THE 80S.
CAZ515-180945-
EAST BAY HILLS-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....61-69.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........50-70 PERCENT EXCEPT 30-40 PERCENT ABOVE 2000
FEET.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 30 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 30 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....78-86.
* 24 HR TREND......11 DEGREES COOLER.
* MIN HUMIDITY........45-55 PERCENT EXCEPT 30-40 PERCENT ABOVE 2000
FEET.
* 24 HR TREND......20 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS 20
TO 30 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
AROUND 30 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS.
* MIN TEMPERATURE.....60-67.
* MAX HUMIDITY........70-90 PERCENT EXCEPT 55-75 PERCENT ABOVE 2000
FEET.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................40%.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
CHANCE OF RAIN SHOWERS IN THE MORNING, THEN SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....75-83.
* MIN HUMIDITY........60-70 PERCENT EXCEPT 50-60 PERCENT ABOVE 2000
FEET.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE MORNING.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE MORNING.
* CWR.................20%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLEAR. SLIGHT CHANCE OF SHOWERS. WEST WINDS 5 TO 15 MPH. LOWS IN
THE 50S TO UPPER 60S.
SATURDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO UPPER 60S. HIGHS IN THE UPPER 70S TO MID 80S.
SUNDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO UPPER 60S. HIGHS IN THE 80S.
MONDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 60S
TO LOWER 70S. HIGHS IN THE MID 80S TO LOWER 90S.
CAZ514-180945-
EASTERN SANTA CLARA HILLS-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....59-66.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........53-63 PERCENT.
* 24 HR TREND......5 PERCENT DRIER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
* MAX TEMPERATURE.....77-84.
* 24 HR TREND......11 DEGREES COOLER.
* MIN HUMIDITY........30 PERCENT EXCEPT 35-45 PERCENT ABOVE 2000
FEET.
* 24 HR TREND......30 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................20%.
* MARINE LAYER........NONE.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS.
* MIN TEMPERATURE.....57-63.
* MAX HUMIDITY........80 PERCENT EXCEPT 60-70 PERCENT ABOVE 2000
FEET.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING DOWNVALLEY 2 TO 6 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE EVENING.
* CWR.................40%.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG EARLY IN THE
MORNING. CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....75-83.
* MIN HUMIDITY........40 PERCENT EXCEPT 50 PERCENT ABOVE 2000 FEET.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...UPVALLEY 3 TO 7 MPH BECOMING SOUTH 5 TO 10
MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................20%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLEAR. SLIGHT CHANCE OF SHOWERS. WEST WINDS 5 TO 15 MPH. LOWS IN
THE 50S TO MID 60S.
SATURDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO MID 60S. HIGHS IN THE UPPER 70S TO MID 80S.
SUNDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO UPPER 60S. HIGHS IN THE 80S.
MONDAY
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S
TO UPPER 60S. HIGHS IN THE MID 80S TO LOWER 90S.
CAZ529-180945-
NORTHERN MONTEREY BAY-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY DENSE FOG AFTER
MIDNIGHT.
* MIN TEMPERATURE.....55-60.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........90 PERCENT.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......SOUTH WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........800 FT ASL.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY DENSE FOG IN THE
MORNING. CHANCE OF RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.....69-77.
* 24 HR TREND......12 DEGREES COOLER.
* MIN HUMIDITY........70-80 PERCENT.
* 24 HR TREND......30 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...15 PERCENT.
* CWR.................20%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG LATE IN THE
EVENING.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........90-100 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS UP TO 5 MPH IN THE EVENING
BECOMING LIGHT WINDS.
* CWR.................40%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. PATCHY FOG EARLY IN THE
MORNING. AREAS OF FOG EARLY IN THE MORNING, THEN PATCHY FOG LATE
IN THE MORNING. CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....68-76.
* MIN HUMIDITY........75-85 PERCENT.
* 20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTHWEST 5 TO 10 MPH IN
THE AFTERNOON.
* CWR.................20%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. PATCHY FOG. SOUTHWEST WINDS UP TO 10 MPH. LOWS IN THE
UPPER 50S.
SATURDAY
PARTLY CLOUDY. AREAS OF FOG. PATCHY FOG. WEST WINDS
5 TO 15 MPH. LOWS IN THE UPPER 50S. HIGHS IN THE 70S.
SUNDAY
MOSTLY CLEAR. PATCHY FOG. NORTHWEST WINDS 5 TO 15 MPH.
LOWS IN THE MID 50S TO LOWER 60S. HIGHS IN THE 70S TO LOWER 80S.
MONDAY
PARTLY CLOUDY. NORTHWEST WINDS 5 TO 15 MPH. LOWS AROUND
60. HIGHS IN THE UPPER 70S TO MID 80S.
CAZ530-180945-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
THROUGH THE NIGHT. PATCHY DENSE FOG AFTER MIDNIGHT.
* MIN TEMPERATURE.....56-61.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........90 PERCENT EXCEPT BIG SUR 80 PERCENT.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........800 FT ASL.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY DENSE FOG IN THE
MORNING. SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. ISOLATED
THUNDERSTORMS THROUGH THE DAY. CHANCE OF RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.....67-75.
* 24 HR TREND......7 DEGREES COOLER.
* MIN HUMIDITY........80 PERCENT EXCEPT BIG SUR 70 PERCENT.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...15 PERCENT.
* CWR.................50%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG EARLY IN THE
MORNING.
* MIN TEMPERATURE.....56-61.
* MAX HUMIDITY........100 PERCENT EXCEPT BIG SUR 90 PERCENT.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CWR.................50%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....67-75.
* MIN HUMIDITY........80 PERCENT EXCEPT BIG SUR 70 PERCENT.
* 20-FOOT WINDS.......SOUTH WINDS UP TO 5 MPH SHIFTING TO THE WEST
5 TO 10 MPH IN THE AFTERNOON.
* CWR.................30%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. PATCHY FOG. WEST WINDS 5 TO 15 MPH. LOWS IN THE 50S TO
LOWER 60S.
SATURDAY
PARTLY CLOUDY. PATCHY FOG. NORTHWEST WINDS 5 TO
15 MPH. LOWS IN THE 50S TO MID 60S. HIGHS IN THE MID 60S TO LOWER
70S.
SUNDAY
PARTLY CLOUDY. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
50S TO MID 60S. HIGHS IN THE UPPER 60S TO MID 70S.
MONDAY
PARTLY CLOUDY. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
50S TO UPPER 60S. HIGHS IN THE 70S.
CAZ528-180945-
NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* MIN TEMPERATURE.....56-61.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........80-90 PERCENT.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................0%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE MORNING, THEN CHANCE OF RAIN SHOWERS AND ISOLATED
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.....72-80.
* 24 HR TREND......9 DEGREES COOLER.
* MIN HUMIDITY........70-80 PERCENT.
* 24 HR TREND......LITTLE CHANGE.
* 20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH INCREASING TO 10 TO 20
MPH IN THE AFTERNOON.
* CHANCE OF THUNDER...15 PERCENT.
* CWR.................30%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG EARLY IN THE MORNING.
* MIN TEMPERATURE.....57-62.
* MAX HUMIDITY........90-100 PERCENT.
* 20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH DECREASING TO UP TO 5
MPH AFTER MIDNIGHT.
* CWR.................40%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....72-80.
* MIN HUMIDITY........70-80 PERCENT.
* 20-FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH.
* CWR.................30%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR IN THE EVENING THEN BECOMING PARTLY
CLOUDY. SLIGHT CHANCE OF SHOWERS. WEST WINDS 10 TO 20 MPH. LOWS
IN THE UPPER 50S.
SATURDAY
PARTLY CLOUDY. PATCHY FOG. WEST WINDS 10 TO 20 MPH.
LOWS IN THE UPPER 50S. HIGHS IN THE MID 70S TO LOWER 80S.
SUNDAY
MOSTLY CLEAR. NORTHWEST WINDS 10 TO 20 MPH. LOWS IN THE
MID 50S TO LOWER 60S. HIGHS IN THE UPPER 70S TO MID 80S.
MONDAY
PARTLY CLOUDY. WEST WINDS 10 TO 20 MPH. LOWS NEAR 60.
HIGHS IN THE 80S.
CAZ516-180945-
SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE EVENING.
* MIN TEMPERATURE.....56-61.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........80-90 PERCENT.
* 24 HR TREND......10 PERCENT WETTER.
* 20-FOOT WINDS.......WEST WINDS 10 TO 20 MPH SHIFTING TO THE
NORTHWEST 5 TO 10 MPH AFTER MIDNIGHT.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE MORNING. ISOLATED THUNDERSTORMS THROUGH THE DAY. CHANCE OF
RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....74-82.
* 24 HR TREND......16 DEGREES COOLER.
* MIN HUMIDITY........60-70 PERCENT.
* 24 HR TREND......50 PERCENT WETTER.
* 20-FOOT WINDS.......EAST WINDS 5 TO 10 MPH SHIFTING TO THE
NORTHWEST 10 TO 20 MPH IN THE AFTERNOON.
* CHANCE OF THUNDER...15 PERCENT.
* CWR.................40%.
* MARINE LAYER........NONE.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY IN THE
EVENING. ISOLATED THUNDERSTORMS THROUGH THE NIGHT, THEN CHANCE OF
RAIN SHOWERS AFTER MIDNIGHT. AREAS OF FOG LATE IN THE EVENING.
PATCHY FOG AFTER MIDNIGHT.
* MIN TEMPERATURE.....55-60.
* MAX HUMIDITY........100 PERCENT.
* 20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH BECOMING SOUTH
UP TO 5 MPH AFTER MIDNIGHT.
* CWR.................50%.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....77-85.
* MIN HUMIDITY........60-70 PERCENT.
* 20-FOOT WINDS.......SOUTH WINDS 5 TO 10 MPH.
* CWR.................30%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR. PATCHY FOG. WEST WINDS 10 TO
20 MPH. LOWS IN THE 50S.
SATURDAY
PARTLY CLOUDY. AREAS OF FOG. NORTHWEST WINDS 10 TO
20 MPH. LOWS IN THE 50S. HIGHS IN THE 80S.
SUNDAY
MOSTLY CLEAR. PATCHY FOG. NORTHWEST WINDS 10 TO 20 MPH.
LOWS IN THE 50S TO LOWER 60S. HIGHS IN THE 80S TO LOWER 90S.
MONDAY
PARTLY CLOUDY. NORTHWEST WINDS 10 TO 20 MPH. LOWS IN
THE MID 50S TO LOWER 60S. HIGHS IN THE UPPER 80S TO MID 90S.
CAZ517-180945-
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS.
* MIN TEMPERATURE.....59-66.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........53-63 PERCENT EXCEPT 40-50 PERCENT ABOVE 2000
FEET.
* 24 HR TREND......15 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 30
MPH DECREASING TO 20 MPH AFTER MIDNIGHT.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS.
* MAX TEMPERATURE.....75-83.
* 24 HR TREND......21 DEGREES COOLER.
* MIN HUMIDITY........50-60 PERCENT.
* 24 HR TREND......30 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 10 MPH WITH GUSTS 20 TO
30 MPH.
* CHANCE OF THUNDER...15 PERCENT.
* CWR.................50%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
ISOLATED THUNDERSTORMS.
* MIN TEMPERATURE.....57-63.
* MAX HUMIDITY........70-90 PERCENT EXCEPT 50-70 PERCENT ABOVE 2000
FEET.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST WINDS UP TO 5 MPH SHIFTING TO THE
SOUTH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTHWEST WINDS AROUND 5 TO 10 MPH WITH
GUSTS TO 15 MPH SHIFTING TO THE SOUTHWEST UP TO 5 MPH AFTER
MIDNIGHT.
* CWR.................50%.
FRIDAY
* SKY/WEATHER.........PARTLY SUNNY. PATCHY FOG EARLY IN THE
MORNING. CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....75-83.
* MIN HUMIDITY........50-60 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE AFTERNOON.
* CWR.................30%.
EXTENDED
FRIDAY NIGHT
MOSTLY CLEAR. WEST WINDS 5 TO 15 MPH. LOWS IN THE
50S TO MID 60S.
SATURDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN
THE 50S TO UPPER 60S. HIGHS IN THE MID 70S TO LOWER 80S.
SUNDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
50S TO UPPER 60S. HIGHS IN THE UPPER 70S TO MID 80S.
MONDAY
PARTLY CLOUDY. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
60S TO LOWER 70S. HIGHS IN THE 80S.
CAZ518-180945-
MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL PARK-
240 PM PDT WED SEP 17 2025
TONIGHT
* SKY/WEATHER.........MOSTLY CLOUDY.
* MIN TEMPERATURE.....58-68.
* 24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY........53-73 PERCENT.
* 24 HR TREND......25 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE EVENING.
* RIDGES/UPR SLOPES....WEST WINDS 5 TO 10 MPH. GUSTS UP TO 30 MPH
DECREASING TO 20 MPH AFTER MIDNIGHT.
* CHANCE OF THUNDER...0 PERCENT.
* CWR.................10%.
* MARINE LAYER........NONE.
THURSDAY
* SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE MORNING. ISOLATED THUNDERSTORMS THROUGH THE DAY. CHANCE OF
RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.....75-83.
* 24 HR TREND......14 DEGREES COOLER.
* MIN HUMIDITY........45-55 PERCENT.
* 24 HR TREND......30 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST WINDS 5 TO 10 MPH SHIFTING TO THE
SOUTHEAST 10 TO 15 MPH AND GUSTS TO AROUND 20 MPH IN THE
AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 30
MPH IN THE AFTERNOON.
* CHANCE OF THUNDER...15 PERCENT.
* CWR.................40%.
* MARINE LAYER........1000 FT ASL.
THURSDAY NIGHT
* SKY/WEATHER.........RAIN SHOWERS LIKELY AND ISOLATED
THUNDERSTORMS THROUGH THE NIGHT. PATCHY FOG EARLY IN THE MORNING.
* MIN TEMPERATURE.....57-64.
* MAX HUMIDITY........75-95 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 20
MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 10 MPH. GUSTS UP TO 30
MPH IN THE EVENING.
* CWR.................70%.
FRIDAY
* SKY/WEATHER.........MOSTLY CLOUDY. PATCHY FOG EARLY IN THE
MORNING. CHANCE OF RAIN SHOWERS THROUGH THE DAY.
* MAX TEMPERATURE.....75-83.
* MIN HUMIDITY........50-60 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH WINDS 5 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 5 TO 10 MPH. GUSTS UP TO 20 MPH
IN THE AFTERNOON.
* CWR.................50%.
EXTENDED
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLEAR. SLIGHT CHANCE OF SHOWERS. WEST WINDS 5 TO 15 MPH. LOWS IN
THE 50S TO UPPER 60S.
SATURDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN
THE 50S TO UPPER 60S. HIGHS IN THE 70S TO MID 80S.
SUNDAY
MOSTLY CLEAR. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
50S TO UPPER 60S. HIGHS IN THE 70S TO UPPER 80S.
MONDAY
PARTLY CLOUDY. NORTHWEST WINDS 5 TO 15 MPH. LOWS IN THE
60S TO LOWER 70S. HIGHS IN THE 80S TO LOWER 90S.
NOAA'S NWS ON THE WEB AT WWW.WEATHER.GOV/SANFRANCISCO
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