215
FNUS56 KSTO 252009
FWFSTO
FIRE WEATHER PLANNING FORECAST FOR INTERIOR NORTHERN CALIFORNIA
NATIONAL WEATHER SERVICE SACRAMENTO CA
109 PM PDT SAT OCT 25 2025
DISCUSSION
A WEATHER SYSTEM CONTINUES TO BRING SCATTERED SHOWERS, LIGHT HIGH
ELEVATION MOUNTAIN SNOW, AND GUSTY WINDS THROUGH SUNDAY. ISOLATED
AFTERNOON AND EVENING THUNDERSTORMS POSSIBLE NORTH OF INTERSTATE
80 THIS AFTERNOON AND EVENING. DRY AND WARMER WEATHER RETURNS NEXT
WEEK WITH PERIODS OF LOCALLY BREEZY OFFSHORE FLOW.
CAZ213-262015-
EASTERN PORTION OF SHASTA-TRINITY NF-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS
IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE........41-46 LOWER ELEVATIONS...EXCEPT 32-41
HIGHER ELEVATIONS.
* 24 HR TREND..........7 DEGREES COOLER.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 9 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 WITH LOCAL GUSTS
UP TO 30 MPH.
* CWR....................30 PERCENT.
* MIXING HEIGHT..........900 FT AGL.
* CHANCE OF THUNDER......13 PERCENT.
SUNDAY
* SKY/WEATHER............SHOWERS IN THE MORNING, THEN A CHANCE OF
SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE........51-56 LOWER ELEVATIONS...EXCEPT 41-49
HIGHER ELEVATIONS.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........83-98 PERCENT.
* 24 HR TREND..........7 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 4 TO 10 MPH.
* CWR....................80 PERCENT.
* MIXING HEIGHT..........2000 FT AGL.
* CHANCE OF THUNDER......3 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE EVENING.
* MIN TEMPERATURE........39-45 LOWER ELEVATIONS...EXCEPT 32-40
HIGHER ELEVATIONS.
* MAX HUMIDITY...........77-92 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...DRAINAGE WINDS UP TO 5 MPH.
* RIDGES/UPR SLOPES....WEST WINDS UP TO 8 MPH WITH LOCAL GUSTS UP
TO 20 MPH SHIFTING TO THE NORTH AFTER MIDNIGHT.
* MIXING HEIGHT..........900 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......2 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........63-68 LOWER ELEVATIONS...EXCEPT 51-61
HIGHER ELEVATIONS.
* MIN HUMIDITY...........49-64 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTH WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 8 MPH.
* MIXING HEIGHT..........3400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ214-262015-
BURNEY BASIN AND NORTHEAST PLATEAU IN SHASTA COUNTY INCLUDING
NORTHWEST LASSEN NF NORTH OF LASSEN NP-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. AT LOWER ELEVATIONS, A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. AT HIGHER ELEVATIONS, A CHANCE OF SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF SHOWERS
AND SNOW SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE........32-37.
* 24 HR TREND..........7 DEGREES COOLER.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 8 TO 14 MPH WITH LOCAL GUSTS UP
TO 35 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 8 TO 14 MPH. LOCAL GUSTS UP TO
40 MPH DECREASING TO 25 MPH AFTER MIDNIGHT.
* CWR....................30 PERCENT.
* MIXING HEIGHT..........1200 FT AGL.
* CHANCE OF THUNDER......15 PERCENT.
SUNDAY
* SKY/WEATHER............SHOWERS LIKELY. PATCHY FOG.
* MAX TEMPERATURE........44-49.
* 24 HR TREND..........6 DEGREES COOLER.
* MIN HUMIDITY...........85-96 PERCENT.
* 24 HR TREND..........5 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 11 MPH. LOCAL GUSTS UP
TO 25 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 11 MPH WITH LOCAL GUSTS
UP TO 25 MPH.
* CWR....................50 PERCENT.
* MIXING HEIGHT..........2300 FT AGL.
* CHANCE OF THUNDER......3 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN
THE EVENING.
* MIN TEMPERATURE........32-37.
* MAX HUMIDITY...........90-100 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...WEST WINDS 4 TO 9 MPH WITH LOCAL GUSTS UP TO
20 MPH IN THE EVENING BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS UP TO 8 MPH.
* MIXING HEIGHT..........1300 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......3 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........52-58.
* MIN HUMIDITY...........48-63 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..........3400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ215-262015-
NORTHERN SACRAMENTO VALLEY TO SOUTHERN TEHAMA COUNTY LINE BELOW
1000 FT-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT.
* MIN TEMPERATURE........46-51.
* 24 HR TREND..........6 DEGREES COOLER.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 9 MPH. LOCAL GUSTS UP TO
25 MPH IN THE EVENING.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......15 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY CLOUDY WITH A CHANCE OF SHOWERS.
* MAX TEMPERATURE........55-60.
* 24 HR TREND..........7 DEGREES COOLER.
* MIN HUMIDITY...........80-88 PERCENT.
* 24 HR TREND..........5 PERCENT UP.
* 20-FOOT WINDS..........SOUTH WINDS 6 TO 12 MPH WITH LOCAL GUSTS
UP TO 25 MPH.
* CWR....................30 PERCENT.
* MIXING HEIGHT..........2500 FT AGL.
* CHANCE OF THUNDER......3 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN THE
EVENING.
* MIN TEMPERATURE........43-48.
* MAX HUMIDITY...........82-97 PERCENT.
* 20-FOOT WINDS..........SOUTHEAST WINDS 5 TO 11 MPH WITH LOCAL
GUSTS UP TO 25 MPH SHIFTING TO THE NORTHWEST UP TO 6 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY EARLY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........66-71.
* MIN HUMIDITY...........41-56 PERCENT.
* 20-FOOT WINDS..........NORTH WINDS 5 TO 11 MPH WITH LOCAL GUSTS
UP TO 20 MPH.
* MIXING HEIGHT..........3200 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ216-262015-
CENTRAL SACRAMENTO VALLEY IN GLENN, COLUSA, YUBA, NORTHERN
SUTTER, AND BUTTE COUNTY BELOW 1000 FT-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY WITH A SLIGHT CHANCE OF
SHOWERS.
* MIN TEMPERATURE........47-52.
* 24 HR TREND..........5 DEGREES COOLER.
* MAX HUMIDITY...........94-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTH WINDS 5 TO 11 MPH. LOCAL GUSTS UP TO
25 MPH IN THE EVENING.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......7 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
MORNING, THEN A SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE........59-64.
* 24 HR TREND..........4 DEGREES COOLER.
* MIN HUMIDITY...........73-88 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTHEAST WINDS 7 TO 13 MPH WITH LOCAL
GUSTS UP TO 25 MPH.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........2400 FT AGL.
* CHANCE OF THUNDER......2 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY.
* MIN TEMPERATURE........46-51.
* MAX HUMIDITY...........80-95 PERCENT.
* 20-FOOT WINDS..........SOUTHEAST WINDS 6 TO 12 MPH WITH LOCAL
GUSTS UP TO 20 MPH SHIFTING TO THE NORTH UP TO 8 MPH AFTER
MIDNIGHT.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY EARLY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........67-72.
* MIN HUMIDITY...........46-61 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 6 TO 12 MPH WITH LOCAL
GUSTS UP TO 20 MPH.
* MIXING HEIGHT..........3000 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ217-262015-
SOUTHERN SACRAMENTO VALLEY IN YOLO-
SACRAMENTO FAR WESTERN PLACER, SOUTHERN SUTTER AND SOLANO COUNTY
BELOW 1000 FT-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY.
* MIN TEMPERATURE........49-54.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........SOUTH WINDS UP TO 8 MPH. LOCAL GUSTS UP TO
20 MPH IN THE EVENING.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......2 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY CLOUDY WITH A SLIGHT CHANCE OF
SHOWERS.
* MAX TEMPERATURE........63-68.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........67-74 PERCENT.
* 24 HR TREND..........11 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTH WINDS 5 TO 11 MPH WITH LOCAL GUSTS
UP TO 20 MPH.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........2000 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY EARLY IN THE EVENING THEN
BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE........48-53.
* MAX HUMIDITY...........78-93 PERCENT.
* 20-FOOT WINDS..........SOUTH WINDS 4 TO 9 MPH WITH LOCAL GUSTS UP
TO 20 MPH SHIFTING TO THE WEST AFTER MIDNIGHT.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........67-72.
* MIN HUMIDITY...........44-59 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 8 TO 14 MPH WITH LOCAL
GUSTS UP TO 25 MPH.
* MIXING HEIGHT..........3000 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ218-262015-
CARQUINEZ STRAIT AND DELTA-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY.
* MIN TEMPERATURE........49-54.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........92-99 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........WEST WINDS 4 TO 9 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY CLOUDY WITH A SLIGHT CHANCE OF
SHOWERS.
* MAX TEMPERATURE........64-69.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........61-72 PERCENT.
* 24 HR TREND..........7 PERCENT DOWN.
* 20-FOOT WINDS..........SOUTH WINDS 7 TO 13 MPH.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........2300 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY EARLY IN THE EVENING THEN
BECOMING MOSTLY CLEAR.
* MIN TEMPERATURE........49-54.
* MAX HUMIDITY...........79-94 PERCENT.
* 20-FOOT WINDS..........WEST WINDS 5 TO 11 MPH. LOCAL GUSTS UP TO
20 MPH IN THE EVENING.
* MIXING HEIGHT..........700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY
LATE IN THE MORNING THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE........68-73.
* MIN HUMIDITY...........47-62 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 8 TO 14 MPH WITH LOCAL
GUSTS UP TO 25 MPH.
* MIXING HEIGHT..........3200 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ219-262015-
NORTHERN SAN JOAQUIN VALLEY IN SAN JOAQUIN AND STANISLAUS
COUNTIES BELOW 1000 FT-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY.
* MIN TEMPERATURE........49-54.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........91-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........NORTHWEST WINDS UP TO 8 MPH.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......0 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY CLOUDY.
* MAX TEMPERATURE........65-70.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........52-63 PERCENT.
* 24 HR TREND..........16 PERCENT DOWN.
* 20-FOOT WINDS..........NORTH WINDS UP TO 8 MPH SHIFTING TO THE
EAST 4 TO 9 MPH IN THE AFTERNOON.
* CWR....................0 PERCENT.
* MIXING HEIGHT..........1400 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY EARLY IN THE EVENING THEN
CLEARING.
* MIN TEMPERATURE........48-53.
* MAX HUMIDITY...........77-92 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........400 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........67-72.
* MIN HUMIDITY...........42-57 PERCENT.
* 20-FOOT WINDS..........NORTHWEST WINDS 8 TO 14 MPH.
* MIXING HEIGHT..........2600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ263-279-262015-
SOUTHEAST EDGE SHASTA-TRINITY NF AND WESTERN PORTIONS OF TEHAMA-
GLENN UNIT-EASTERN MENDOCINO NF-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS
IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. AREAS OF
DENSE FOG IN THE EVENING. WIDESPREAD DENSE FOG AFTER MIDNIGHT.
* MIN TEMPERATURE........46-51 LOWER ELEVATIONS...EXCEPT 34-41
HIGHER ELEVATIONS.
* 24 HR TREND..........6 DEGREES COOLER.
* MAX HUMIDITY...........91-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 5 TO 11 MPH. LOCAL GUSTS UP
TO 25 MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 5 TO 11 MPH. LOCAL GUSTS UP
TO 30 MPH IN THE EVENING.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........700 FT AGL.
* CHANCE OF THUNDER......8 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY CLOUDY. SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS IN THE AFTERNOON. PATCHY FOG IN
THE AFTERNOON.
* MAX TEMPERATURE........53-59 LOWER ELEVATIONS...EXCEPT 41-50
HIGHER ELEVATIONS.
* 24 HR TREND..........5 DEGREES COOLER.
* MIN HUMIDITY...........74-84 PERCENT.
* 24 HR TREND..........6 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 4 TO 9 MPH SHIFTING TO THE NORTH
5 TO 10 MPH WITH LOCAL GUSTS UP TO 20 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 7 TO 13 MPH.
* CWR....................40 PERCENT.
* MIXING HEIGHT..........2000 FT AGL.
* CHANCE OF THUNDER......2 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY IN THE EVENING THEN BECOMING
PARTLY CLOUDY. AT LOWER ELEVATIONS, A SLIGHT CHANCE OF SHOWERS IN
THE EVENING. AT HIGHER ELEVATIONS, A SLIGHT CHANCE OF SHOWERS
EARLY IN THE EVENING, THEN A SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS LATE IN THE EVENING.
* MIN TEMPERATURE........43-48 LOWER ELEVATIONS...EXCEPT 35-41
HIGHER ELEVATIONS.
* MAX HUMIDITY...........77-92 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHWEST WINDS 4 TO 9 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........64-69 LOWER ELEVATIONS...EXCEPT 50-58
HIGHER ELEVATIONS.
* MIN HUMIDITY...........37-48 PERCENT LOWER ELEVATIONS...EXCEPT
44-59 PERCENT HIGH ELEVATIONS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTH WINDS 5 TO 11 MPH.
* RIDGES/UPR SLOPES....NORTH WINDS 5 TO 11 MPH.
* MIXING HEIGHT..........2700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ266-262015-
NORTHERN SIERRA FOOTHILLS FROM 1000 TO 3000 FT. INCLUDES PORTIONS
OF SHASTA-TRINITY AND BUTTE UNITS-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF
SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE........43-49.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 5 TO 11 MPH. LOCAL GUSTS UP
TO 25 MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 4 TO 10 MPH. LOCAL GUSTS UP
TO 25 MPH IN THE EVENING.
* CWR....................20 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......18 PERCENT.
SUNDAY
* SKY/WEATHER............CLOUDY WITH A CHANCE OF SHOWERS. PATCHY
FOG IN THE AFTERNOON.
* MAX TEMPERATURE........49-55.
* 24 HR TREND..........4 DEGREES COOLER.
* MIN HUMIDITY...........85-96 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 7 TO 13 MPH WITH LOCAL GUSTS UP
TO 25 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 7 TO 13 MPH WITH LOCAL GUSTS UP
TO 25 MPH.
* CWR....................40 PERCENT.
* MIXING HEIGHT..........2000 FT AGL.
* CHANCE OF THUNDER......4 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. AT HIGHER ELEVATIONS, A SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT.
* MIN TEMPERATURE........43-49.
* MAX HUMIDITY...........81-96 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS 5 TO 11 MPH SHIFTING TO THE
NORTHEAST UP TO 7 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTH WINDS 4 TO 9 MPH WITH LOCAL GUSTS UP
TO 20 MPH IN THE EVENING BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......2 PERCENT.
MONDAY
* SKY/WEATHER............PARTLY CLOUDY EARLY IN THE MORNING THEN
CLEARING.
* MAX TEMPERATURE........60-66.
* MIN HUMIDITY...........52-67 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTH WINDS 4 TO 10 MPH.
* RIDGES/UPR SLOPES....NORTHWEST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........3100 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ220-267-262015-
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-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING, THEN A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE........46-51.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........93-100 PERCENT.
* 24 HR TREND..........4 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHEAST WINDS UP TO 7 MPH WITH LOCAL GUSTS
UP TO 20 MPH IN THE EVENING BECOMING DRAINAGE UP TO 5 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 4 TO 9 MPH. LOCAL GUSTS UP
TO 20 MPH IN THE EVENING.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........500 FT AGL.
* CHANCE OF THUNDER......2 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY CLOUDY WITH A CHANCE OF SHOWERS.
* MAX TEMPERATURE........54-62.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........66-81 PERCENT.
* 24 HR TREND..........10 PERCENT DOWN.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...UPSLOPE WINDS UP TO 5 MPH BECOMING SOUTHEAST
UP TO 7 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH WINDS UP TO 8 MPH.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........1400 FT AGL.
* CHANCE OF THUNDER......3 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY UNTIL EARLY MORNING THEN
BECOMING PARTLY CLOUDY.
* MIN TEMPERATURE........45-50.
* MAX HUMIDITY...........77-92 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS UP TO 8 MPH.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS UP TO 8 MPH IN THE EVENING
BECOMING VARIABLE UP TO 5 MPH.
* MIXING HEIGHT..........500 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........64-69.
* MIN HUMIDITY...........44-59 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...NORTHEAST WINDS UP TO 7 MPH SHIFTING TO THE
NORTHWEST UP TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....NORTHEAST WINDS UP TO 7 MPH SHIFTING TO THE
WEST UP TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........2700 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ268-262015-
NORTHERN SIERRA INCLUDING LASSEN NP AND PLUMAS AND LASSEN NF/S
WEST OF THE SIERRA CREST (WEST OF EVANS PEAK-GRIZZLY PEAK-
BECKWORTH PEAK)-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. AT LOWER ELEVATIONS, A
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. AT HIGHER
ELEVATIONS, A CHANCE OF SHOWERS, SNOW SHOWERS AND A SLIGHT CHANCE
OF THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF SHOWERS AND
SNOW SHOWERS AFTER MIDNIGHT. PATCHY DENSE FOG AFTER MIDNIGHT.
* MIN TEMPERATURE........29-39.
* 24 HR TREND..........4 DEGREES COOLER.
* MAX HUMIDITY...........95-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 10 TO 16 MPH WITH LOCAL GUSTS UP
TO 40 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 10 TO 16 MPH WITH LOCAL GUSTS UP
TO 40 MPH.
* CWR....................50 PERCENT.
* MIXING HEIGHT..........1200 FT AGL.
* CHANCE OF THUNDER......15 PERCENT.
SUNDAY
* SKY/WEATHER............AT LOWER ELEVATIONS, SHOWERS LIKELY IN THE
MORNING, THEN A CHANCE OF SHOWERS IN THE AFTERNOON, PATCHY FOG IN
THE AFTERNOON. AT HIGHER ELEVATIONS, SHOWERS AND SNOW SHOWERS
LIKELY IN THE MORNING, THEN A CHANCE OF SHOWERS AND SNOW SHOWERS
IN THE AFTERNOON, AREAS OF FOG IN THE AFTERNOON.
* MAX TEMPERATURE........43-48 LOWER ELEVATIONS...EXCEPT 37-42
HIGHER ELEVATIONS.
* 24 HR TREND..........4 DEGREES COOLER.
* MIN HUMIDITY...........85-100 PERCENT.
* 24 HR TREND..........LITTLE CHANGE.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTHWEST WINDS 9 TO 15 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST WINDS 9 TO 15 MPH WITH LOCAL GUSTS
UP TO 30 MPH.
* CWR....................60 PERCENT.
* MIXING HEIGHT..........1700 FT AGL.
* CHANCE OF THUNDER......3 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY. AT LOWER ELEVATIONS, A
CHANCE OF SHOWERS IN THE EVENING. AT HIGHER ELEVATIONS, A CHANCE
OF SHOWERS AND SNOW SHOWERS IN THE EVENING.
* MIN TEMPERATURE........30-40.
* MAX HUMIDITY...........81-96 PERCENT...EXCEPT 92-100 PERCENT IN
THE HIGH MOUNTAIN VALLEYS.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 6 TO 12 MPH. LOCAL GUSTS UP TO
25 MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTH WINDS 6 TO 12 MPH. LOCAL GUSTS UP TO
25 MPH IN THE EVENING.
* MIXING HEIGHT..........800 FT AGL.
* CWR....................10 PERCENT.
* CHANCE OF THUNDER......2 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY
LATE IN THE MORNING THEN BECOMING MOSTLY SUNNY.
* MAX TEMPERATURE........53-59 LOWER ELEVATIONS...EXCEPT 47-55
HIGHER ELEVATIONS.
* MIN HUMIDITY...........52-67 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...EAST WINDS 4 TO 10 MPH SHIFTING TO THE SOUTH
UP TO 8 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHEAST WINDS 4 TO 9 MPH.
* MIXING HEIGHT..........2900 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
CAZ221-269-262015-
STANISLAUS NF WEST OF THE SIERRA CREST-
NORTHERN SIERRA INCLUDING THE TAHOE AND ELDORADO NF/S WEST OF THE
SIERRA CREST-
109 PM PDT SAT OCT 25 2025
TONIGHT
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING, THEN A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
* MIN TEMPERATURE........41-47 LOWER ELEVATIONS...EXCEPT 31-39
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MAX HUMIDITY...........86-100 PERCENT.
* 24 HR TREND..........12 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 9 TO 15 MPH. LOCAL GUSTS UP TO
25 MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTH WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP
TO 40 MPH.
* CWR....................10 PERCENT.
* MIXING HEIGHT..........600 FT AGL.
* CHANCE OF THUNDER......1 PERCENT.
SUNDAY
* SKY/WEATHER............MOSTLY CLOUDY. A CHANCE OF SHOWERS AT
LOWER ELEVATIONS....AND A CHANCE OF SHOWERS AND SNOW SHOWERS AT
HIGHER ELEVATIONS.
* MAX TEMPERATURE........48-57 LOWER ELEVATIONS...EXCEPT 39-49
HIGHER ELEVATIONS.
* 24 HR TREND..........LITTLE CHANGE.
* MIN HUMIDITY...........73-88 PERCENT.
* 24 HR TREND..........6 PERCENT UP.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 9 TO 15 MPH.
* RIDGES/UPR SLOPES....SOUTH WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* CWR....................30 PERCENT.
* MIXING HEIGHT..........1600 FT AGL.
* CHANCE OF THUNDER......2 PERCENT.
SUNDAY NIGHT
* SKY/WEATHER............MOSTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
* MIN TEMPERATURE........40-46 LOWER ELEVATIONS...EXCEPT 30-38
HIGHER ELEVATIONS.
* MAX HUMIDITY...........69-84 PERCENT.
* 20-FOOT WINDS..........
* VALLEYS/LWR SLOPES...SOUTH WINDS 4 TO 10 MPH SHIFTING TO THE EAST
UP TO 8 MPH AFTER MIDNIGHT.
* RIDGES/UPR SLOPES....SOUTH WINDS 9 TO 15 MPH WITH LOCAL GUSTS UP
TO 30 MPH.
* MIXING HEIGHT..........600 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......1 PERCENT.
MONDAY
* SKY/WEATHER............MOSTLY SUNNY.
* MAX TEMPERATURE........61-67 LOWER ELEVATIONS...EXCEPT 50-60
HIGHER ELEVATIONS.
* MIN HUMIDITY...........38-53 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 4 TO 9 MPH SHIFTING TO THE
SOUTHWEST UP TO 7 MPH IN THE AFTERNOON.
* MIXING HEIGHT..........3000 FT AGL.
* CWR....................0 PERCENT.
* CHANCE OF THUNDER......0 PERCENT.
EXTENDED
...SHASTA COUNTY MOUNTAINS AND COASTAL RANGE
MONDAY NIGHT
CLEAR. LOWS 37 TO 47. NORTH WINDS 5 TO 15 MPH.
TUESDAY
SUNNY. HIGHS 63 TO 71. NORTH WINDS 5 TO 15 MPH.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 50. NORTH WINDS 5 TO
15 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS 63 TO 72. NORTH WINDS UP TO
10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO 50. NORTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS 62 TO 71. NORTH WINDS UP TO
10 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 51. VARIABLE LESS THAN
5 MPH.
...NORTHERN SIERRA AND LASSEN PARK
MONDAY NIGHT
CLEAR. LOWS 37 TO 47. NORTHEAST WINDS 5 TO
15 MPH.
TUESDAY
SUNNY. HIGHS 65 TO 74. NORTHEAST WINDS 10 TO 20 MPH.
TUESDAY NIGHT
CLEAR. LOWS 40 TO 50. NORTHEAST WINDS 5 TO
15 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS 65 TO 75. VARIABLE LESS THAN
5 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 51. NORTHEAST WINDS
UP TO 10 MPH.
THURSDAY
PARTLY CLOUDY. HIGHS 65 TO 73. VARIABLE LESS THAN
5 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 51. VARIABLE LESS THAN
5 MPH.
...SIERRA NEVADA FOOTHILLS
MONDAY NIGHT
CLEAR. LOWS 47 TO 52. NORTHEAST WINDS 5 TO
15 MPH.
TUESDAY
SUNNY. HIGHS 71 TO 76. NORTHWEST WINDS 10 TO 20 MPH.
TUESDAY NIGHT
CLEAR. LOWS 50 TO 55. EAST WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS 72 TO 77. VARIABLE LESS THAN
5 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 55. VARIABLE LESS
THAN 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS 71 TO 76. VARIABLE LESS THAN
5 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 56. VARIABLE LESS THAN
5 MPH.
...CENTRAL VALLEY AND DELTA
MONDAY NIGHT
CLEAR. LOWS 48 TO 53. NORTHWEST WINDS 5 TO
15 MPH.
TUESDAY
SUNNY. HIGHS 74 TO 79. NORTHWEST WINDS 5 TO 15 MPH.
TUESDAY NIGHT
CLEAR. LOWS 50 TO 55. VARIABLE LESS THAN 5 MPH.
WEDNESDAY
SUNNY. HIGHS 76 TO 81. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 55. VARIABLE LESS
THAN 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS 75 TO 80. VARIABLE LESS THAN
5 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 55. VARIABLE LESS THAN
5 MPH.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page