372
FNUS56 KSTO 102044
FWFSTO
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA
NATIONAL WEATHER SERVICE SACRAMENTO CA
144 PM PDT SAT MAY 10 2025
DISCUSSION
...GUSTY SOUTHERLY WINDS AND LOW RELATIVE HUMIDITY BRING ELEVATED
FIRE WEATHER CONDITIONS TO THE SACRAMENTO VALLEY ON SUNDAY...
DRY, SUNNY AND UNSEASONABLY WARM TODAY. AN APPROACHING WEATHER
SYSTEM WILL BRING COOLER TEMPERATURES AND GUSTY SOUTH TO WEST
WINDS ON SUNDAY. THE GUSTY WINDS WILL COMBINE WITH DRY CONDITIONS
AND LOW RELATIVE HUMIDITY, LEADING TO ELEVATED FIRE WEATHER
CONDITIONS IN THE VALLEY ON SUNDAY. BREEZY SOUTH TO WEST WINDS
WILL CONTINUE INTO MONDAY ESPECIALLY OVER THE SIERRA NEVADA. THE
WEATHER SYSTEM WILL BRING LIGHT PRECIPITATION IN THE FORM OF
SHOWERS AND HIGH ELEVATION MOUNTAIN SNOW SHOWERS EARLY NEXT WEEK.
THERE IS A 10-30% PROBABILITY OF THUNDERSTORMS ON MONDAY AND
TUESDAY, MAINLY IN THE MOUNTAINS. BEHIND THE SYSTEM ON WEDNESDAY,
PERIODS OF BREEZY NORTH WINDS AND DRIER CONDITIONS WILL DEVELOP
ACROSS THE REGION.
CAZ213-112045-
EASTERN PORTION OF SHASTA-TRINITY NF-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........50-55 LOWER ELEVATIONS...EXCEPT 43-50
HIGHER ELEVATIONS.
* 24 HR TREND..........6 DEGREES COOLER.
* MAX HUMIDITY...........47-58 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS UP TO 8 MPH IN THE EVENING
BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 7 TO 13 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...2 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY SUNNY IN THE MORNING THEN BECOMING
PARTLY CLOUDY.
* MAX TEMPERATURE........71-76 LOWER ELEVATIONS...EXCEPT 59-69
HIGHER ELEVATIONS.
* 24 HR TREND..........13 DEGREES COOLER.
* MIN HUMIDITY...........25-34 PERCENT.
* 24 HR TREND..........10 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 13 TO 19 MPH WITH LOCAL
GUSTS UP TO 35 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 13 TO 19 MPH WITH LOCAL
GUSTS UP TO 40 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...4 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............PARTLY CLOUDY IN THE EVENING, THEN MOSTLY
CLOUDY WITH SHOWERS LIKELY AFTER MIDNIGHT.
* MIN TEMPERATURE........44-49 LOWER ELEVATIONS...EXCEPT 36-42
HIGHER ELEVATIONS.
* MAX HUMIDITY...........77-92 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 8 TO 14 MPH WITH LOCAL GUSTS
UP TO 40 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTHWEST WINDS 13 TO 25 MPH
SHIFTING TO THE SOUTH 11 TO 17 MPH AFTER MIDNIGHT. LOCAL GUSTS
UP TO 45 MPH.
* CWR....................30 PERCENT.
* CHANCE OF THUNDER...5 PERCENT.
MONDAY
* SKY/WEATHER............AT LOWER ELEVATIONS, SHOWERS IN THE
MORNING. AT HIGHER ELEVATIONS, SHOWERS AND SNOW SHOWERS IN THE
MORNING. SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE........56-61 LOWER ELEVATIONS...EXCEPT 45-53
HIGHER ELEVATIONS.
* MIN HUMIDITY...........67-82 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP
TO 25 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* CWR....................60 PERCENT.
* CHANCE OF THUNDER...22 PERCENT.
CAZ214-112045-
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING
NORTHWEST LASSEN NF NORTH OF LASSEN NP-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........42-50.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........50-55 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 11 MPH WITH LOCAL GUSTS
UP TO 25 MPH IN THE EVENING BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 11 MPH. LOCAL GUSTS UP
TO 25 MPH IN THE EVENING.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........66-71 LOWER ELEVATIONS...EXCEPT 60-66
HIGHER ELEVATIONS.
* 24 HR TREND..........12 DEGREES COOLER.
* MIN HUMIDITY...........21-26 PERCENT.
* 24 HR TREND..........7 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 6 TO 12 MPH WITH LOCAL GUSTS
UP TO 25 MPH INCREASING TO 14 TO 20 MPH WITH LOCAL GUSTS UP TO
40 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....BREEZY. SOUTHWEST WINDS 11 TO 17 MPH
INCREASING TO 15 TO 27 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO
45 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...2 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. AT LOWER ELEVATIONS, A CHANCE OF SHOWERS AFTER
MIDNIGHT. AT HIGHER ELEVATIONS, A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF SNOW SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE........35-43.
* MAX HUMIDITY...........82-97 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 12 TO 18 MPH WITH LOCAL
GUSTS UP TO 45 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTHWEST WINDS 17 TO 29 MPH
DECREASING TO 15 TO 21 MPH AFTER MIDNIGHT. LOCAL GUSTS UP TO 50
MPH.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER...3 PERCENT.
MONDAY
* SKY/WEATHER............AT LOWER ELEVATIONS, SHOWERS IN THE
MORNING. AT HIGHER ELEVATIONS, SHOWERS AND SNOW SHOWERS IN THE
MORNING. SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE........52-57 LOWER ELEVATIONS...EXCEPT 45-51
HIGHER ELEVATIONS.
* MIN HUMIDITY...........50-65 PERCENT LOWER ELEVATIONS...EXCEPT
61-76 PERCENT HIGH ELEVATIONS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 9 TO 15 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 9 TO 15 MPH.
* CWR....................30 PERCENT.
* CHANCE OF THUNDER...21 PERCENT.
CAZ215-112045-
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW
1000 FT-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........55-60.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........46-52 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WEST WINDS UP TO 8 MPH SHIFTING TO THE
EAST UP TO 7 MPH AFTER MIDNIGHT.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........77-82.
* 24 HR TREND..........11 DEGREES COOLER.
* MIN HUMIDITY...........17-22 PERCENT.
* 24 HR TREND..........4 PERCENT UP.
* 20-FOOT WINDS..........SOUTH WINDS 11 TO 17 MPH. LOCAL GUSTS UP
TO 25 MPH INCREASING TO 40 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...2 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR IN THE EVENING, THEN MOSTLY
CLOUDY WITH A CHANCE OF SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE........48-53.
* MAX HUMIDITY...........71-86 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 12 TO 18 MPH WITH LOCAL GUSTS
UP TO 45 MPH.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER...4 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE........62-68.
* MIN HUMIDITY...........46-61 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 8 TO 14 MPH. LOCAL GUSTS UP TO
30 MPH IN THE MORNING.
* CWR....................30 PERCENT.
* CHANCE OF THUNDER...21 PERCENT.
CAZ216-112045-
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........55-60.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........48-56 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTH WINDS 9 TO 15 MPH WITH LOCAL GUSTS
UP TO 25 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........77-82.
* 24 HR TREND..........14 DEGREES COOLER.
* MIN HUMIDITY...........20-25 PERCENT.
* 24 HR TREND..........7 PERCENT UP.
* 20-FOOT WINDS..........SOUTH WINDS 7 TO 13 MPH WITH LOCAL GUSTS
UP TO 25 MPH INCREASING TO SOUTHWEST 15 TO 21 MPH WITH LOCAL
GUSTS UP TO 35 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR. A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT.
* MIN TEMPERATURE........48-53.
* MAX HUMIDITY...........71-86 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 13 TO 19 MPH WITH LOCAL GUSTS
UP TO 40 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...2 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
MORNING, THEN A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE........64-70.
* MIN HUMIDITY...........42-57 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 9 TO 15 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* CWR....................20 PERCENT.
* CHANCE OF THUNDER...13 PERCENT.
CAZ217-112045-
SOUTHERN SACRAMENTO VALLEY IN YOLO-
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY
BELOW 1000 FT-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........53-58.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........52-63 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTHWEST WINDS 8 TO 14 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
SUNDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........74-79.
* 24 HR TREND..........17 DEGREES COOLER.
* MIN HUMIDITY...........25-33 PERCENT.
* 24 HR TREND..........12 PERCENT UP.
* 20-FOOT WINDS..........SOUTHWEST WINDS 9 TO 15 MPH WITH LOCAL
GUSTS UP TO 30 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR. A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT.
* MIN TEMPERATURE........48-53.
* MAX HUMIDITY...........75-90 PERCENT.
* 20-FOOT WINDS..........SOUTHWEST WINDS 10 TO 16 MPH WITH LOCAL
GUSTS UP TO 35 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY UNTIL LATE AFTERNOON THEN
BECOMING PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS.
* MAX TEMPERATURE........65-70.
* MIN HUMIDITY...........43-58 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 8 TO 14 MPH WITH LOCAL GUSTS
UP TO 25 MPH.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER...8 PERCENT.
CAZ218-112045-
CARQUINEZ STRAIT AND DELTA-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........52-57.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........59-71 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTHWEST WINDS 10 TO 16 MPH WITH LOCAL
GUSTS UP TO 25 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........69-77.
* 24 HR TREND..........16 DEGREES COOLER.
* MIN HUMIDITY...........31-43 PERCENT.
* 24 HR TREND..........14 PERCENT UP.
* 20-FOOT WINDS..........WEST WINDS 13 TO 19 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR. A SLIGHT CHANCE OF SHOWERS
AFTER MIDNIGHT.
* MIN TEMPERATURE........49-54.
* MAX HUMIDITY...........78-91 PERCENT.
* 20-FOOT WINDS..........SOUTHWEST WINDS 11 TO 17 MPH WITH LOCAL
GUSTS UP TO 35 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY IN THE MORNING THEN BECOMING
PARTLY CLOUDY. A CHANCE OF SHOWERS.
* MAX TEMPERATURE........65-70.
* MIN HUMIDITY...........48-63 PERCENT.
* 20-FOOT WINDS..........SOUTHWEST WINDS 9 TO 15 MPH. LOCAL GUSTS
UP TO 20 MPH INCREASING TO 30 MPH IN THE AFTERNOON.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER...4 PERCENT.
CAZ219-112045-
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS
COUNTIES BELOW 1000 FT-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........54-59.
* 24 HR TREND..........5 DEGREES COOLER.
* MAX HUMIDITY...........51-61 PERCENT.
* 24 HR TREND..........9 PERCENT UP.
* 20-FOOT WINDS..........WEST WINDS 8 TO 14 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........77-82.
* 24 HR TREND..........13 DEGREES COOLER.
* MIN HUMIDITY...........26-32 PERCENT.
* 24 HR TREND..........11 PERCENT UP.
* 20-FOOT WINDS..........WEST WINDS 10 TO 16 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........46-51.
* MAX HUMIDITY...........74-89 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 9 TO 15 MPH WITH LOCAL
GUSTS UP TO 30 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY WITH A SLIGHT CHANCE OF
SHOWERS IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON.
* MAX TEMPERATURE........65-71.
* MIN HUMIDITY...........40-55 PERCENT.
* 20-FOOT WINDS..........SOUTHWEST WINDS 7 TO 13 MPH. LOCAL GUSTS
UP TO 25 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...3 PERCENT.
CAZ263-279-112045-
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-
GLENN UNIT-EASTERN MENDOCINO NF-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY.
* MIN TEMPERATURE........54-59 LOWER ELEVATIONS...EXCEPT 41-50
HIGHER ELEVATIONS.
* 24 HR TREND..........9 DEGREES COOLER.
* MAX HUMIDITY...........40-51 PERCENT.
* 24 HR TREND..........10 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS 10 TO 16 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 10 TO 16 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
SUNDAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........72-77 LOWER ELEVATIONS...EXCEPT 53-63
HIGHER ELEVATIONS.
* 24 HR TREND..........14 DEGREES COOLER.
* MIN HUMIDITY...........22-32 PERCENT.
* 24 HR TREND..........8 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 13 TO 19 MPH. LOCAL GUSTS UP
TO 30 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....BREEZY. WEST WINDS 10 TO 16 MPH SHIFTING TO
THE SOUTHWEST 14 TO 26 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO
35 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR IN THE EVENING THEN BECOMING
MOSTLY CLOUDY. AT LOWER ELEVATIONS, SHOWERS LIKELY AFTER
MIDNIGHT. AT HIGHER ELEVATIONS, A SLIGHT CHANCE OF SHOWERS IN THE
EVENING. A SLIGHT CHANCE OF SNOW SHOWERS LATE IN THE EVENING,
THEN SHOWERS AND SNOW SHOWERS LIKELY AFTER MIDNIGHT.
* MIN TEMPERATURE........46-51 LOWER ELEVATIONS...EXCEPT 35-43
HIGHER ELEVATIONS.
* MAX HUMIDITY...........71-86 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 9 TO 15 MPH WITH LOCAL GUSTS
UP TO 35 MPH.
* RIDGES/UPR SLOPES....BREEZY. WEST WINDS 15 TO 27 MPH SHIFTING TO
THE SOUTHWEST 13 TO 19 MPH AFTER MIDNIGHT. LOCAL GUSTS UP TO 45
MPH.
* CWR....................20 PERCENT.
* CHANCE OF THUNDER...5 PERCENT.
MONDAY
* SKY/WEATHER............AT LOWER ELEVATIONS, SHOWERS LIKELY IN THE
MORNING, THEN SHOWERS LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. AT HIGHER ELEVATIONS, SNOW SHOWERS UNTIL LATE
AFTERNOON. SHOWERS LIKELY THROUGH THE DAY. A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE........58-63 LOWER ELEVATIONS...EXCEPT 41-51
HIGHER ELEVATIONS.
* MIN HUMIDITY...........45-60 PERCENT LOWER ELEVATIONS...EXCEPT
59-74 PERCENT HIGH ELEVATIONS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 8 TO 14 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 8 TO 14 MPH.
* CWR....................30 PERCENT.
* CHANCE OF THUNDER...20 PERCENT.
CAZ266-112045-
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS
OF SHASTA-TRINITY AND BUTTE UNITS-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........52-58.
* 24 HR TREND..........7 DEGREES COOLER.
* MAX HUMIDITY...........43-49 PERCENT.
* 24 HR TREND..........7 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 4 TO 10 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........72-77 LOWER ELEVATIONS...EXCEPT 66-72
HIGHER ELEVATIONS.
* 24 HR TREND..........12 DEGREES COOLER.
* MIN HUMIDITY...........21-29 PERCENT.
* 24 HR TREND..........7 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 16 TO 22 MPH WITH LOCAL
GUSTS UP TO 40 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 16 TO 22 MPH WITH LOCAL GUSTS UP
TO 40 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR IN THE EVENING, THEN MOSTLY
CLOUDY WITH A CHANCE OF SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE........42-51.
* MAX HUMIDITY...........78-93 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 12 TO 18 MPH WITH LOCAL GUSTS UP
TO 50 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 12 TO 18 MPH WITH LOCAL GUSTS UP
TO 50 MPH.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER...3 PERCENT.
MONDAY
* SKY/WEATHER............SHOWERS IN THE MORNING, THEN SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE........57-62 LOWER ELEVATIONS...EXCEPT 51-57
HIGHER ELEVATIONS.
* MIN HUMIDITY...........59-74 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 10 TO 16 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* CWR....................50 PERCENT.
* CHANCE OF THUNDER...20 PERCENT.
CAZ220-267-112045-
SOUTHERN MOTHERLODE FROM 1000 TO 3000 FT. INCLUDES PORTIONS OF
TOULUMNE-CALAVERAS UNIT-
NORTHERN MOTHERLODE FROM 1000 TO 3000 FT. INCLUDES PORTIONS OF
NEVADA-YUBA-PLACER-AMADOR AND ELDORADO UNITS-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............CLEAR IN THE EVENING THEN BECOMING PARTLY
CLOUDY.
* MIN TEMPERATURE........52-58.
* 24 HR TREND..........7 DEGREES COOLER.
* MAX HUMIDITY...........51-62 PERCENT.
* 24 HR TREND..........8 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS UP TO 8 MPH SHIFTING TO THE
SOUTHEAST UP TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTH WINDS UP TO 7 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...2 PERCENT.
SUNDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........68-77.
* 24 HR TREND..........13 DEGREES COOLER.
* MIN HUMIDITY...........29-34 PERCENT.
* 24 HR TREND..........9 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 8 TO 14 MPH WITH LOCAL GUSTS
UP TO 25 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 8 TO 14 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........41-49.
* MAX HUMIDITY...........73-88 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 7 TO 13 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 7 TO 13 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN BECOMING
MOSTLY CLOUDY. A CHANCE OF SHOWERS.
* MAX TEMPERATURE........59-64 LOWER ELEVATIONS...EXCEPT 53-59
HIGHER ELEVATIONS.
* MIN HUMIDITY...........52-67 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 11 MPH.
* CWR....................20 PERCENT.
* CHANCE OF THUNDER...9 PERCENT.
CAZ268-112045-
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-
BECKWORTH PEAK)-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........42-48 LOWER ELEVATIONS...EXCEPT 37-45
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........48-60 PERCENT...EXCEPT 57-62 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 24 HR TREND..........9 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 7 TO 13 MPH. LOCAL GUSTS UP TO
25 MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTH WINDS 7 TO 13 MPH. LOCAL GUSTS UP TO
30 MPH IN THE EVENING.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........59-65 LOWER ELEVATIONS...EXCEPT 51-59
HIGHER ELEVATIONS.
* 24 HR TREND..........13 DEGREES COOLER.
* MIN HUMIDITY...........27-38 PERCENT.
* 24 HR TREND..........10 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 12 TO 18 MPH INCREASING
TO 14 TO 26 MPH IN THE AFTERNOON. LOCAL GUSTS UP TO 45 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 50 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLEAR. AT LOWER ELEVATIONS, A
CHANCE OF SHOWERS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND SNOW
SHOWERS EARLY IN THE MORNING. AT HIGHER ELEVATIONS, A CHANCE OF
SNOW SHOWERS AND SHOWERS AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS
EARLY IN THE MORNING.
* MIN TEMPERATURE........34-39 LOWER ELEVATIONS...EXCEPT 29-35
HIGHER ELEVATIONS.
* MAX HUMIDITY...........81-96 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...BREEZY. SOUTHWEST WINDS 17 TO 29 MPH
BECOMING SOUTH 12 TO 18 MPH AFTER MIDNIGHT. LOCAL GUSTS UP TO
55 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTH WINDS 18 TO 30 MPH WITH LOCAL
GUSTS UP TO 55 MPH.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER...2 PERCENT.
MONDAY
* SKY/WEATHER............AT LOWER ELEVATIONS, SHOWERS LIKELY AND
SNOW SHOWERS IN THE MORNING. SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. AT HIGHER ELEVATIONS, SHOWERS
EARLY IN THE MORNING. SNOW SHOWERS THROUGH THE DAY. SNOW LEVEL
5000 FEET INCREASING TO 5500 FEET IN THE AFTERNOON.
* MAX TEMPERATURE........43-49 LOWER ELEVATIONS...EXCEPT 35-43
HIGHER ELEVATIONS.
* MIN HUMIDITY...........67-82 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 12 TO 18 MPH WITH LOCAL
GUSTS UP TO 30 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 12 TO 18 MPH WITH LOCAL
GUSTS UP TO 35 MPH.
* CWR....................60 PERCENT.
* CHANCE OF THUNDER...20 PERCENT.
CAZ221-269-112045-
STANISLAUS NF WEST OF THE SIERRA CREST-
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE
SIERRA CREST-
144 PM PDT SAT MAY 10 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLEAR.
* MIN TEMPERATURE........49-54 LOWER ELEVATIONS...EXCEPT 39-47
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........48-61 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 7 TO 13 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 7 TO 13 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...2 PERCENT.
SUNDAY
* SKY/WEATHER............SUNNY.
* MAX TEMPERATURE........64-70 LOWER ELEVATIONS...EXCEPT 54-64
HIGHER ELEVATIONS.
* 24 HR TREND..........12 DEGREES COOLER.
* MIN HUMIDITY...........28-36 PERCENT.
* 24 HR TREND..........4 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 15 TO 27 MPH WITH LOCAL
GUSTS UP TO 30 MPH.
* RIDGES/UPR SLOPES....WINDY. SOUTHWEST WINDS 16 TO 28 MPH WITH
LOCAL GUSTS UP TO 55 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............CLEAR.
* MIN TEMPERATURE........37-43 LOWER ELEVATIONS...EXCEPT 31-39
HIGHER ELEVATIONS.
* MAX HUMIDITY...........65-80 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 15 TO 21 MPH WITH LOCAL GUSTS UP
TO 40 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 15 TO 21 MPH WITH LOCAL
GUSTS UP TO 60 MPH.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER...0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY SUNNY IN THE MORNING THEN BECOMING
MOSTLY CLOUDY. AT LOWER ELEVATIONS, A CHANCE OF SNOW SHOWERS
EARLY IN THE MORNING. A CHANCE OF SHOWERS THROUGH THE DAY. A
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. AT HIGHER
ELEVATIONS, A CHANCE OF SNOW SHOWERS IN THE MORNING, THEN A
CHANCE OF SHOWERS AND SNOW SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE........47-55 LOWER ELEVATIONS...EXCEPT 38-48
HIGHER ELEVATIONS.
* MIN HUMIDITY...........56-71 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 14 TO 20 MPH WITH LOCAL
GUSTS UP TO 25 MPH.
* RIDGES/UPR SLOPES....BREEZY. SOUTHWEST WINDS 15 TO 21 MPH WITH
LOCAL GUSTS UP TO 50 MPH.
* CWR....................20 PERCENT.
* CHANCE OF THUNDER...10 PERCENT.
EXTENDED
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE
MONDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 33 TO 41. NORTHWEST WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 54 TO 64. NORTH WINDS UP TO
13 MPH.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 35 TO 44. NORTHWEST WINDS
5 TO 15 MPH.
WEDNESDAY
WARMER. MOSTLY SUNNY. HIGHS 60 TO 70. NORTH WINDS UP
TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 38 TO 48. NORTHWEST WINDS
UP TO 13 MPH.
THURSDAY
WARMER. MOSTLY SUNNY. HIGHS 66 TO 76. NORTH WINDS UP
TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 43 TO 53. NORTHWEST WINDS
UP TO 10 MPH.
...NORTHERN SIERRA AND LASSEN PARK
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
34 TO 40. SOUTH WINDS UP TO 10 MPH.
TUESDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS. HIGHS 51 TO 59. WEST WINDS UP TO 13 MPH.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 34 TO 42. NORTHEAST WINDS UP
TO 13 MPH.
WEDNESDAY
WARMER. MOSTLY SUNNY. HIGHS 60 TO 67. NORTHWEST
WINDS UP TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 38 TO 47. NORTHEAST WINDS
UP TO 10 MPH.
THURSDAY
WARMER. MOSTLY SUNNY. HIGHS 66 TO 74. WEST WINDS UP
TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 43 TO 52. VARIABLE LESS THAN
5 MPH.
...SIERRA NEVADA FOOTHILLS
MONDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS.
LOWS 41 TO 46. EAST WINDS UP TO 10 MPH.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS 60 TO 68. WEST WINDS UP TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 43 TO 48. NORTHEAST WINDS UP
TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS 68 TO 74. NORTHWEST WINDS UP TO 10 MPH.
WEDNESDAY NIGHT
CLEAR. LOWS 48 TO 53. VARIABLE LESS THAN
5 MPH.
THURSDAY
SUNNY. HIGHS 74 TO 80. VARIABLE LESS THAN 5 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 52 TO 57. VARIABLE LESS THAN
5 MPH.
...CENTRAL VALLEY AND DELTA
MONDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 51. WEST WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 72 TO 77. NORTHWEST WINDS UP TO
13 MPH.
TUESDAY NIGHT
CLEAR. LOWS 48 TO 53. WEST WINDS UP TO 13 MPH.
WEDNESDAY
SUNNY. HIGHS 79 TO 84. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
CLEAR. LOWS 51 TO 56. WEST WINDS 5 TO 10 MPH.
THURSDAY
SUNNY. HIGHS 84 TO 89. NORTHWEST WINDS UP TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 53 TO 58. WEST WINDS 5 TO
10 MPH.
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