004
FNUS56 KSTO 300923
FWFSTO
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA
NATIONAL WEATHER SERVICE SACRAMENTO CA
123 AM PST TUE DEC 30 2025
DISCUSSION
LOW CLOUDS AND/OR FOG ARE FORECAST IN THE CENTRAL VALLEY THROUGH
THE MIDDLE OF THE WEEK AS HIGH PRESSURE REMAINS IN CONTROL OVER
NORTHERN CALIFORNIA. MOSTLY CLEAR CONDITIONS ARE EXPECTED IN THE
MOUNTAINS. LIGHT RAIN AND HIGH ELEVATION LIGHT SNOW CHANCES RETURN
AROUND NEW YEAR'S EVE WITH MINIMAL IMPACTS. ANOTHER ROUND OF
PRECIPITATION WITH LOWER SNOW LEVELS WILL ARRIVE FRIDAY AND INTO
THE WEEKEND.
CAZ213-310100-
EASTERN PORTION OF SHASTA-TRINITY NF-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........57-62 LOWER ELEVATIONS...EXCEPT 49-57
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........46-54 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTH WINDS UP TO 8 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 4 TO 10 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1100 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............PARTLY CLOUDY IN THE EVENING THEN BECOMING
MOSTLY CLOUDY.
* MIN TEMPERATURE........41-46 LOWER ELEVATIONS...EXCEPT 31-41
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........58-73 PERCENT.
* 24 HR TREND..........6 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...DRAINAGE WINDS UP TO 5 MPH BECOMING NORTH UP
TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 4 TO 10 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY CLOUDY. A SLIGHT CHANCE OF RAIN IN
THE LATE MORNING AND EARLY AFTERNOON. RAIN LIKELY LATE IN THE
AFTERNOON.
* MAX TEMPERATURE........56-61 LOWER ELEVATIONS...EXCEPT 48-56
HIGHER ELEVATIONS.
* MIN HUMIDITY...........52-67 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTH WINDS UP TO 7 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 4 TO 9 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ214-310100-
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING
NORTHWEST LASSEN NF NORTH OF LASSEN NP-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............MOSTLY SUNNY. WIDESPREAD FROST IN THE
MORNING.
* MAX TEMPERATURE........49-54.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........53-59 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 8 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1100 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. WIDESPREAD FROST.
* MIN TEMPERATURE........26-31.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........81-90 PERCENT LOWER ELEVATIONS...EXCEPT
64-79 PERCENT HIGH ELEVATIONS.
* 24 HR TREND..........4 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 7 MPH.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 7 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY CLOUDY. WIDESPREAD FROST EARLY IN
THE MORNING. A SLIGHT CHANCE OF RAIN IN THE LATE MORNING AND
EARLY AFTERNOON. RAIN LIKELY LATE IN THE AFTERNOON.
* MAX TEMPERATURE........47-52.
* MIN HUMIDITY...........55-70 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS UP TO 7 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ215-310100-
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW
1000 FT-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............PARTLY CLOUDY. AREAS OF FOG AND FROST IN
THE MORNING.
* MAX TEMPERATURE........52-57.
* 24 HR TREND..........8 DEGREES COOLER.
* MIN HUMIDITY...........62-75 PERCENT.
* 24 HR TREND..........12 PERCENT UP.
* 20-FOOT WINDS..........NORTH WINDS UP TO 6 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1000 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* MIN TEMPERATURE........40-45.
* 24 HR TREND..........6 DEGREES WARMER.
* MAX HUMIDITY...........74-88 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........NORTH WINDS UP TO 6 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............CLOUDY. A SLIGHT CHANCE OF RAIN IN THE
LATE MORNING AND EARLY AFTERNOON. RAIN LIKELY LATE IN THE
AFTERNOON.
* MAX TEMPERATURE........52-57.
* MIN HUMIDITY...........69-84 PERCENT.
* 20-FOOT WINDS..........NORTH WINDS UP TO 6 MPH SHIFTING TO THE
SOUTHEAST UP TO 5 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ216-310100-
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............PARTLY CLOUDY. WIDESPREAD DENSE FOG IN THE
MORNING.
* MAX TEMPERATURE........48-53.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........70-85 PERCENT.
* 24 HR TREND..........20 PERCENT UP.
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 7 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1000 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG.
* MIN TEMPERATURE........42-47.
* 24 HR TREND..........6 DEGREES WARMER.
* MAX HUMIDITY...........80-95 PERCENT.
* 24 HR TREND..........4 PERCENT DOWN.
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 7 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............CLOUDY. A CHANCE OF RAIN IN THE LATE
MORNING AND EARLY AFTERNOON. RAIN LIKELY LATE IN THE AFTERNOON.
* MAX TEMPERATURE........49-54.
* MIN HUMIDITY...........69-84 PERCENT.
* 20-FOOT WINDS..........NORTHEAST WINDS UP TO 6 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ217-310100-
SOUTHERN SACRAMENTO VALLEY IN YOLO-
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY
BELOW 1000 FT-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN BECOMING
MOSTLY CLOUDY. WIDESPREAD DENSE FOG IN THE MORNING, THEN PATCHY
FOG IN THE AFTERNOON.
* MAX TEMPERATURE........48-53.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........75-90 PERCENT.
* 24 HR TREND..........16 PERCENT UP.
* 20-FOOT WINDS..........NORTH WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1000 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG IN THE EVENING.
WIDESPREAD FOG AFTER MIDNIGHT.
* MIN TEMPERATURE........43-48.
* 24 HR TREND..........7 DEGREES WARMER.
* MAX HUMIDITY...........89-97 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTH WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........400 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............CLOUDY. A CHANCE OF RAIN IN THE LATE
MORNING AND EARLY AFTERNOON. RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........48-53.
* MIN HUMIDITY...........70-85 PERCENT.
* 20-FOOT WINDS..........NORTHEAST WINDS UP TO 8 MPH.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ218-310100-
CARQUINEZ STRAIT AND DELTA-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............MOSTLY CLOUDY. WIDESPREAD DENSE FOG IN THE
MORNING, THEN PATCHY FOG IN THE AFTERNOON.
* MAX TEMPERATURE........47-52.
* 24 HR TREND..........4 DEGREES COOLER.
* MIN HUMIDITY...........83-91 PERCENT.
* 24 HR TREND..........24 PERCENT UP.
* 20-FOOT WINDS..........NORTHEAST WINDS 5 TO 11 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1000 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG IN THE EVENING.
WIDESPREAD FOG AFTER MIDNIGHT.
* MIN TEMPERATURE........43-48.
* 24 HR TREND..........7 DEGREES WARMER.
* MAX HUMIDITY...........88-95 PERCENT.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........NORTHEAST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........400 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............CLOUDY. A CHANCE OF RAIN IN THE LATE
MORNING AND EARLY AFTERNOON. RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........48-53.
* MIN HUMIDITY...........80-95 PERCENT.
* 20-FOOT WINDS..........EAST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................20 PERCENT.
* CHANCE OF THUNDER......2 PERCENT.
CAZ219-310100-
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS
COUNTIES BELOW 1000 FT-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN BECOMING
MOSTLY CLOUDY. WIDESPREAD DENSE FOG IN THE MORNING. PATCHY FOG IN
THE AFTERNOON.
* MAX TEMPERATURE........48-54.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........74-89 PERCENT.
* 24 HR TREND..........7 PERCENT UP.
* 20-FOOT WINDS..........EAST WINDS UP TO 7 MPH SHIFTING TO THE
NORTH UP TO 6 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........900 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. PATCHY FOG IN THE EVENING.
WIDESPREAD FOG AFTER MIDNIGHT.
* MIN TEMPERATURE........43-48.
* 24 HR TREND..........5 DEGREES WARMER.
* MAX HUMIDITY...........88-96 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 6 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........400 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............A SLIGHT CHANCE OF RAIN EARLY IN THE
MORNING. A CHANCE OF RAIN IN THE LATE MORNING AND EARLY
AFTERNOON, THEN RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........49-54.
* MIN HUMIDITY...........69-84 PERCENT.
* 20-FOOT WINDS..........SOUTHEAST WINDS UP TO 8 MPH.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................20 PERCENT.
* CHANCE OF THUNDER......2 PERCENT.
CAZ263-279-310100-
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-
GLENN UNIT-EASTERN MENDOCINO NF-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........55-60 LOWER ELEVATIONS...EXCEPT 49-55
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........48-60 PERCENT LOWER ELEVATIONS...EXCEPT
33-42 PERCENT HIGH ELEVATIONS.
* 24 HR TREND..........5 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTH WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* MIN TEMPERATURE........41-46.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........56-65 PERCENT LOWER ELEVATIONS...EXCEPT
46-53 PERCENT HIGH ELEVATIONS.
* 24 HR TREND..........5 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....WEST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
LATE MORNING AND EARLY AFTERNOON. RAIN LIKELY LATE IN THE
AFTERNOON.
* MAX TEMPERATURE........56-61 LOWER ELEVATIONS...EXCEPT 47-53
HIGHER ELEVATIONS.
* MIN HUMIDITY...........51-66 PERCENT LOWER ELEVATIONS...EXCEPT
40-55 PERCENT HIGH ELEVATIONS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS UP TO 8 MPH SHIFTING TO THE
NORTHEAST IN THE AFTERNOON.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ266-310100-
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS
OF SHASTA-TRINITY AND BUTTE UNITS-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........54-59.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........52-64 PERCENT LOWER ELEVATIONS...EXCEPT
42-53 PERCENT HIGH ELEVATIONS.
* 24 HR TREND..........5 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 7 TO 13 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 6 TO 12 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* MIN TEMPERATURE........41-46.
* 24 HR TREND..........5 DEGREES WARMER.
* MAX HUMIDITY...........61-75 PERCENT LOWER ELEVATIONS...EXCEPT
50-63 PERCENT HIGH ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 5 TO 11 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
LATE MORNING AND EARLY AFTERNOON. RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........53-58.
* MIN HUMIDITY...........57-72 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 5 TO 11 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 5 TO 11 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ220-267-310100-
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-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............MOSTLY SUNNY IN THE MORNING THEN BECOMING
PARTLY CLOUDY. AT LOWER ELEVATIONS, PATCHY DENSE FOG IN THE
MORNING.
* MAX TEMPERATURE........56-61.
* 24 HR TREND..........5 DEGREES WARMER.
* MIN HUMIDITY...........60-75 PERCENT LOWER ELEVATIONS...EXCEPT
46-57 PERCENT HIGH ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 8 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* MIN TEMPERATURE........43-48.
* 24 HR TREND..........7 DEGREES WARMER.
* MAX HUMIDITY...........74-87 PERCENT LOWER ELEVATIONS...EXCEPT
58-71 PERCENT HIGH ELEVATIONS.
* 24 HR TREND..........5 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 7 MPH.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 7 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........400 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............CLOUDY. A CHANCE OF RAIN IN THE LATE
MORNING AND EARLY AFTERNOON. RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........53-58.
* MIN HUMIDITY...........62-77 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 7 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ268-310100-
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-
BECKWORTH PEAK)-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............MOSTLY SUNNY. WIDESPREAD FROST IN THE
MORNING.
* MAX TEMPERATURE........44-54.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........44-59 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 7 TO 13 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 6 TO 12 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. WIDESPREAD FROST IN THE
EVENING.
* MIN TEMPERATURE........29-39.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........56-71 PERCENT...EXCEPT 80-92 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 24 HR TREND..........5 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS 6 TO 12 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS 6 TO 12 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........300 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
LATE MORNING AND EARLY AFTERNOON. RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........44-52 LOWER ELEVATIONS...EXCEPT 41-47
HIGHER ELEVATIONS.
* MIN HUMIDITY...........57-72 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
CAZ221-269-310100-
STANISLAUS NF WEST OF THE SIERRA CREST-
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE
SIERRA CREST-
123 AM PST TUE DEC 30 2025
TODAY
* SKY/WEATHER............SUNNY IN THE MORNING THEN BECOMING PARTLY
CLOUDY.
* MAX TEMPERATURE........56-61 LOWER ELEVATIONS...EXCEPT 44-54
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES WARMER.
* MIN HUMIDITY...........37-48 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 5 TO 11 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 5 TO 11 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........800 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* MIN TEMPERATURE........41-48 LOWER ELEVATIONS...EXCEPT 30-40
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES WARMER.
* MAX HUMIDITY...........52-67 PERCENT.
* 24 HR TREND..........9 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....EAST WINDS 4 TO 10 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........300 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
WEDNESDAY
* SKY/WEATHER............A CHANCE OF RAIN IN THE LATE MORNING AND
EARLY AFTERNOON. RAIN LATE IN THE AFTERNOON.
* MAX TEMPERATURE........53-58 LOWER ELEVATIONS...EXCEPT 41-51
HIGHER ELEVATIONS.
* MIN HUMIDITY...........56-71 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 7 MPH IN THE MORNING
BECOMING UPSLOPE UP TO 5 MPH.
* RIDGES/UPR SLOPES....EAST WINDS UP TO 8 MPH IN THE MORNING
BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................20 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
EXTENDED
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE
WEDNESDAY NIGHT
RAIN. LOWS 36 TO 44. NORTHEAST WINDS UP TO
10 MPH.
NEW YEARS DAY
RAIN. HIGHS 43 TO 50. SOUTHEAST WINDS UP TO
10 MPH.
THURSDAY NIGHT
RAIN. LOWS 38 TO 46. SOUTH WINDS 5 TO 15 MPH.
FRIDAY
RAIN. HIGHS 44 TO 50. SOUTH WINDS 5 TO 15 MPH.
FRIDAY NIGHT
RAIN AND SNOW. LOWS 33 TO 40. SOUTH WINDS 5 TO
15 MPH.
SATURDAY
RAIN AND SNOW. HIGHS 38 TO 46. SOUTH WINDS 5 TO
15 MPH.
SATURDAY NIGHT
RAIN AND SNOW LIKELY. LOWS 29 TO 39. SOUTHWEST
WINDS 5 TO 10 MPH.
...NORTHERN SIERRA AND LASSEN PARK
WEDNESDAY NIGHT
RAIN. LOWS 37 TO 47. EAST WINDS UP TO 10 MPH.
NEW YEARS DAY
RAIN. HIGHS 46 TO 53. SOUTH WINDS 5 TO 15 MPH.
THURSDAY NIGHT
RAIN. LOWS 38 TO 47. SOUTH WINDS 5 TO 15 MPH.
FRIDAY
RAIN. HIGHS 45 TO 52. SOUTH WINDS 5 TO 15 MPH.
FRIDAY NIGHT
RAIN. LOWS 33 TO 41. SOUTH WINDS 5 TO 15 MPH.
SATURDAY
RAIN AND SNOW. HIGHS 39 TO 47. SOUTH WINDS 5 TO
10 MPH.
SATURDAY NIGHT
RAIN AND SNOW LIKELY. LOWS 29 TO 39. SOUTH
WINDS UP TO 10 MPH.
...SIERRA NEVADA FOOTHILLS
WEDNESDAY NIGHT
RAIN. LOWS 45 TO 50. VARIABLE LESS THAN 5 MPH.
NEW YEARS DAY
RAIN. HIGHS 51 TO 56. SOUTHEAST WINDS UP TO
10 MPH.
THURSDAY NIGHT
RAIN. LOWS 47 TO 52. SOUTH WINDS 5 TO 15 MPH.
FRIDAY
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. HIGHS
52 TO 57. SOUTH WINDS 5 TO 15 MPH.
FRIDAY NIGHT
RAIN. LOWS 41 TO 46. SOUTH WINDS 5 TO 15 MPH.
SATURDAY
RAIN. HIGHS 47 TO 52. SOUTH WINDS 5 TO 10 MPH.
SATURDAY NIGHT
RAIN LIKELY. LOWS 39 TO 44. SOUTHEAST WINDS
5 TO 10 MPH.
...CENTRAL VALLEY AND DELTA
WEDNESDAY NIGHT
RAIN. LOWS 47 TO 52. NORTHEAST WINDS UP TO
10 MPH.
NEW YEARS DAY
RAIN. HIGHS 54 TO 59. SOUTHEAST WINDS UP TO
10 MPH.
THURSDAY NIGHT
RAIN. LOWS 50 TO 55. SOUTHEAST WINDS 5 TO
15 MPH.
FRIDAY
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. HIGHS
55 TO 60. SOUTHEAST WINDS 10 TO 15 MPH.
FRIDAY NIGHT
RAIN. LOWS 45 TO 50. SOUTH WINDS 10 TO 15 MPH.
SATURDAY
RAIN LIKELY. HIGHS 50 TO 55. SOUTH WINDS 5 TO 10 MPH.
SATURDAY NIGHT
CLOUDY WITH A CHANCE OF RAIN. LOWS 42 TO 47.
SOUTHEAST WINDS 5 TO 10 MPH.
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