331
FPUS56 KSTO 310837
ZFPSTO
INTERIOR NORTHERN CALIFORNIA ZONE FORECASTS FOR CALIFORNIA
NATIONAL WEATHER SERVICE SACRAMENTO CA
1237 AM PST SAT JAN 31 2026
SPOT TEMPERATURES AND PROBABILITIES OF MEASURABLE PRECIPITATION
ARE FOR TONIGHT, SUNDAY, SUNDAY NIGHT, AND MONDAY.
CAZ013-011200-
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY-
INCLUDING THE CITY OF SHASTA DAM
1237 AM PST SAT JAN 31 2026
TONIGHT
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY
CLOUDY. LOWS 33 TO 48. LIGHT WINDS.
SUNDAY
MOSTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS 48 TO
63 HIGHER ELEVATIONS...59 TO 67 LOWER ELEVATIONS. LIGHT WINDS.
SUNDAY NIGHT
CLEAR, COLDER. LOWS 30 TO 45. LIGHT WINDS
BECOMING NORTH UP TO 10 MPH AFTER MIDNIGHT.
MONDAY
MOSTLY SUNNY. WARMER. HIGHS 52 TO 67 HIGHER
ELEVATIONS...64 TO 71 LOWER ELEVATIONS. PREVAILING NORTH WINDS UP
TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 34 TO 49. PREVAILING NORTH
WINDS UP TO 10 MPH.
TUESDAY
SUNNY, WARMER. HIGHS 57 TO 72.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 35 TO 50.
WEDNESDAY
MOSTLY SUNNY. HIGHS 59 TO 74.
WEDNESDAY NIGHT
CLEAR. LOWS 36 TO 51.
THURSDAY THROUGH FRIDAY NIGHT
MOSTLY CLEAR. HIGHS 58 TO 73.
LOWS 36 TO 51.
SATURDAY
PARTLY CLOUDY. HIGHS 54 TO 69.
TEMPERATURE / PRECIPITATION
SHASTA DAM 45 64 43 68 / 0 10 0 0
=
CAZ014-011200-
BURNEY BASIN / EASTERN SHASTA COUNTY-
INCLUDING THE CITY OF BURNEY
1237 AM PST SAT JAN 31 2026
TONIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS 28 TO 39. LIGHT WINDS.
SUNDAY
MOSTLY SUNNY. HIGHS 50 TO 60. LIGHT WINDS.
SUNDAY NIGHT
CLEAR. LOWS 25 TO 35. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS 52 TO 62. LIGHT WINDS.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 25 TO 37. LIGHT WINDS.
TUESDAY
SUNNY. HIGHS 57 TO 65.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 29 TO 39.
WEDNESDAY
MOSTLY SUNNY. HIGHS 59 TO 69.
WEDNESDAY NIGHT
CLEAR. LOWS 28 TO 40.
THURSDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 54 TO 68. LOWS
28 TO 40.
TEMPERATURE / PRECIPITATION
BURNEY 31 56 28 57 / 0 0 0 0
=
CAZ015-011200-
NORTHERN SACRAMENTO VALLEY-
INCLUDING THE CITIES OF REDDING AND RED BLUFF
1237 AM PST SAT JAN 31 2026
TONIGHT
MOSTLY CLOUDY. LOWS 40 TO 46. LIGHT WINDS.
SUNDAY
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 62 TO 68. LIGHT WINDS.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 38 TO 44. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS 64 TO 72. NORTH WINDS UP TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 39 TO 47. NORTH WINDS UP TO
10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 65 TO 71.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 47.
WEDNESDAY
MOSTLY SUNNY. HIGHS 68 TO 76.
WEDNESDAY NIGHT
CLEAR. LOWS 42 TO 48.
THURSDAY THROUGH FRIDAY NIGHT
MOSTLY CLEAR. HIGHS 65 TO 73.
LOWS 42 TO 48.
SATURDAY
PARTLY CLOUDY. HIGHS 63 TO 69.
TEMPERATURE / PRECIPITATION
REDDING 40 67 38 71 / 0 0 0 0
RED BLUFF 41 66 40 67 / 0 0 0 0
=
CAZ016-011200-
CENTRAL SACRAMENTO VALLEY-
INCLUDING THE CITIES OF CHICO, OROVILLE, AND MARYSVILLE/YUBA CITY
1237 AM PST SAT JAN 31 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY
TONIGHT
MOSTLY CLOUDY. PATCHY FOG LATE IN THE NIGHT. LOWS
40 TO 46. LIGHT WINDS.
SUNDAY
PATCHY FOG IN THE MORNING. MOSTLY CLOUDY. HIGHS AROUND
63. LIGHT WINDS.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 42. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS 61 TO 67. NORTHWEST WINDS UP TO
10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 42. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS 61 TO 67.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 47.
WEDNESDAY THROUGH FRIDAY NIGHT
MOSTLY CLEAR. HIGHS 64 TO 70.
LOWS 41 TO 47.
SATURDAY
PARTLY CLOUDY. HIGHS AROUND 64.
TEMPERATURE / PRECIPITATION
CHICO 45 64 42 66 / 0 0 0 0
OROVILLE 45 64 41 63 / 0 0 0 0
MARYSVILLE/YUBA CITY 42 63 40 62 / 0 0 0 0
=
CAZ017-011200-
SOUTHERN SACRAMENTO VALLEY-
INCLUDING THE CITY OF SACRAMENTO
1237 AM PST SAT JAN 31 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY
TONIGHT
MOSTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS 40 TO
46. LIGHT WINDS.
SUNDAY
PATCHY FOG IN THE MORNING. MOSTLY CLOUDY. HIGHS 60 TO
66. LIGHT WINDS.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
AROUND 42. LIGHT WINDS.
MONDAY
PARTLY CLOUDY IN THE MORNING THEN CLEARING. HIGHS
AROUND 62. NORTHWEST WINDS UP TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 42. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 63.
TUESDAY NIGHT
CLEAR. LOWS 40 TO 46.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 63 TO 69.
LOWS 40 TO 47.
FRIDAY
PARTLY CLOUDY. HIGHS AROUND 66.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 45.
SATURDAY
PARTLY CLOUDY. HIGHS AROUND 64.
TEMPERATURE / PRECIPITATION
SACRAMENTO 42 62 42 62 / 0 0 0 0
SAC EXEC AIRPORT 42 62 41 62 / 0 0 0 0
=
CAZ018-011200-
CARQUINEZ STRAIT AND DELTA-
INCLUDING THE CITY OF FAIRFIELD/SUISUN
1237 AM PST SAT JAN 31 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY
TONIGHT
MOSTLY CLOUDY. PATCHY FOG IN THE LATE EVENING AND
OVERNIGHT. LOWS AROUND 42. LIGHT WINDS.
SUNDAY
PATCHY FOG IN THE MORNING. MOSTLY CLOUDY. HIGHS AROUND
63. LIGHT WINDS.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
AROUND 43. LIGHT WINDS.
MONDAY
PARTLY CLOUDY IN THE MORNING THEN CLEARING. PATCHY FOG
IN THE MORNING. HIGHS AROUND 63. LIGHT WINDS.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 42. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 63.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 43.
WEDNESDAY
PARTLY CLOUDY. HIGHS AROUND 64.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 44.
THURSDAY
PARTLY CLOUDY. HIGHS AROUND 64.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 46.
FRIDAY
PARTLY CLOUDY. HIGHS AROUND 65.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 46.
SATURDAY
MOSTLY CLOUDY. HIGHS AROUND 64.
TEMPERATURE / PRECIPITATION
FAIRFIELD/SUISUN 40 63 40 64 / 0 0 0 0
=
CAZ019-011200-
NORTHERN SAN JOAQUIN VALLEY-
INCLUDING THE CITIES OF STOCKTON AND MODESTO
1237 AM PST SAT JAN 31 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY
TONIGHT
MOSTLY CLEAR. PATCHY FOG IN THE LATE EVENING AND EARLY
MORNING. AREAS OF FOG LATE IN THE NIGHT. LOWS 42 TO 48. LIGHT
WINDS.
SUNDAY
PATCHY FOG IN THE MORNING. MOSTLY CLOUDY. HIGHS AROUND
63. NORTHWEST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
40 TO 46. NORTHWEST WINDS UP TO 10 MPH.
MONDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 58 TO
64. NORTHWEST WINDS UP TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 43. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 63.
TUESDAY NIGHT
CLEAR. LOWS 41 TO 47.
WEDNESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS AROUND
66. LOWS 41 TO 48.
FRIDAY
PARTLY CLOUDY. HIGHS AROUND 65.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 47.
SATURDAY
PARTLY CLOUDY. HIGHS AROUND 65.
TEMPERATURE / PRECIPITATION
STOCKTON 42 62 42 62 / 0 0 0 0
MODESTO 44 63 44 60 / 0 0 0 0
=
CAZ063-011200-
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO WESTERN COLUSA COUNTY-
INCLUDING THE CITY OF ALDER SPRINGS
1237 AM PST SAT JAN 31 2026
TONIGHT
MOSTLY CLOUDY. LOWS 38 TO 50. LIGHT WINDS.
SUNDAY
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 47 TO 62 HIGHER ELEVATIONS...60 TO 65 LOWER
ELEVATIONS. LIGHT WINDS.
SUNDAY NIGHT
CLEAR. LOWS 36 TO 48. PREVAILING NORTHWEST WINDS
UP TO 10 MPH.
MONDAY
MOSTLY SUNNY. WARMER. HIGHS 51 TO 65 HIGHER
ELEVATIONS...64 TO 70 LOWER ELEVATIONS. PREVAILING NORTHWEST
WINDS UP TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 50. PREVAILING NORTHWEST
WINDS UP TO 10 MPH.
TUESDAY
SUNNY, WARMER. HIGHS 56 TO 71.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 42 TO 52.
WEDNESDAY
MOSTLY SUNNY. HIGHS 58 TO 73.
WEDNESDAY NIGHT AND THURSDAY
CLEAR. LOWS 42 TO 52. HIGHS 56 TO
71.
THURSDAY NIGHT THROUGH SATURDAY
MOSTLY CLEAR. LOWS 41 TO 52.
HIGHS 54 TO 69.
TEMPERATURE / PRECIPITATION
ALDER SPRINGS 46 58 43 60 / 0 0 0 0
=
CAZ066-011200-
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-
INCLUDING THE CITY OF PARADISE
1237 AM PST SAT JAN 31 2026
TONIGHT
MOSTLY CLOUDY. LOWS 42 TO 52. LIGHT WINDS.
SUNDAY
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 59 TO 65. LIGHT WINDS.
SUNDAY NIGHT
CLEAR. LOWS 40 TO 48. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS 62 TO 68. PREVAILING NORTHEAST
WINDS UP TO 10 MPH IN THE MORNING BECOMING LIGHT.
MONDAY NIGHT
CLEAR. LOWS 42 TO 50. PREVAILING NORTHEAST WINDS
UP TO 10 MPH.
TUESDAY
SUNNY. HIGHS 63 TO 71.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 44 TO 52.
WEDNESDAY
MOSTLY SUNNY. HIGHS 65 TO 73.
WEDNESDAY NIGHT
CLEAR. LOWS 44 TO 52.
THURSDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 61 TO 73. LOWS
44 TO 53.
TEMPERATURE / PRECIPITATION
PARADISE 49 62 45 65 / 0 0 0 0
=
CAZ067-011200-
MOTHERLODE-
INCLUDING THE CITIES OF GRASS VALLEY AND JACKSON
1237 AM PST SAT JAN 31 2026
TONIGHT
PARTLY CLOUDY. LOWS 43 TO 51. LIGHT WINDS.
SUNDAY
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY
CLOUDY. HIGHS 62 TO 68. LIGHT WINDS.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
39 TO 47. LIGHT WINDS.
MONDAY
SUNNY. HIGHS 59 TO 67. LIGHT WINDS.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 49. LIGHT WINDS.
TUESDAY
SUNNY. HIGHS 62 TO 70.
TUESDAY NIGHT
CLEAR. LOWS 42 TO 50.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 65 TO 73. LOWS 42 TO
51.
THURSDAY NIGHT THROUGH SATURDAY
MOSTLY CLEAR. LOWS 43 TO 53.
HIGHS 62 TO 70.
TEMPERATURE / PRECIPITATION
GRASS VALLEY 44 64 40 64 / 0 0 0 0
JACKSON 45 64 42 62 / 0 0 0 0
=
CAZ068-011200-
WESTERN PLUMAS COUNTY/LASSEN PARK-
INCLUDING THE CITIES OF CHESTER AND QUINCY
1237 AM PST SAT JAN 31 2026
TONIGHT
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY
CLOUDY. LOWS 30 TO 45. LIGHT WINDS.
SUNDAY
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY
SUNNY. HIGHS 42 TO 57 HIGHER ELEVATIONS...49 TO 61 LOWER
ELEVATIONS. LIGHT WINDS BECOMING SOUTHWEST UP TO 10 MPH IN THE
AFTERNOON.
SUNDAY NIGHT
CLEAR, COLDER. LOWS 27 TO 42. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. NOT AS COOL. HIGHS 45 TO 60 HIGHER
ELEVATIONS...51 TO 64 LOWER ELEVATIONS. LIGHT WINDS.
MONDAY NIGHT
CLEAR. LOWS 30 TO 45. PREVAILING NORTHEAST WINDS
UP TO 10 MPH.
TUESDAY
SUNNY. HIGHS 51 TO 66.
TUESDAY NIGHT
CLEAR. LOWS 31 TO 46.
WEDNESDAY
MOSTLY SUNNY. HIGHS 53 TO 68.
WEDNESDAY NIGHT
CLEAR. LOWS 31 TO 46.
THURSDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 51 TO 66. LOWS
32 TO 47.
TEMPERATURE / PRECIPITATION
QUINCY 32 60 28 60 / 0 0 0 0
CHESTER 27 55 24 57 / 0 0 0 0
=
CAZ069-011200-
WEST SLOPE NORTHERN SIERRA NEVADA-
INCLUDING THE CITY OF BLUE CANYON
1237 AM PST SAT JAN 31 2026
TONIGHT...MOSTLY CLEAR. LOWS 29 TO 44 HIGHER ELEVATIONS
40 TO
52 LOWER ELEVATIONS. PREVAILING SOUTHEAST WINDS UP TO 10 MPH.
SUNDAY
MOSTLY SUNNY IN THE MORNING THEN BECOMING PARTLY
CLOUDY. HIGHS 45 TO 60 HIGHER ELEVATIONS...57 TO 67 LOWER
ELEVATIONS. PREVAILING SOUTHEAST WINDS UP TO 10 MPH SHIFTING TO
THE SOUTHWEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING.
COLDER. LOWS 27 TO 42 HIGHER ELEVATIONS...38 TO 50 LOWER
ELEVATIONS. LIGHT WINDS.
MONDAY...SUNNY. HIGHS 47 TO 62 HIGHER ELEVATIONS
60 TO
68 LOWER ELEVATIONS. PREVAILING NORTHEAST WINDS UP TO 10 MPH.
MONDAY NIGHT...CLEAR. LOWS 28 TO 43 HIGHER ELEVATIONS
40 TO
51 LOWER ELEVATIONS. PREVAILING NORTHEAST WINDS UP TO 10 MPH.
TUESDAY
SUNNY. HIGHS 53 TO 68.
TUESDAY NIGHT
CLEAR. LOWS 33 TO 48.
WEDNESDAY THROUGH THURSDAY
CLEAR. HIGHS 55 TO 70. LOWS 34 TO
49.
THURSDAY NIGHT THROUGH SATURDAY
MOSTLY CLEAR. LOWS 34 TO 49.
HIGHS 51 TO 66.
TEMPERATURE / PRECIPITATION
BLUE CANYON 45 57 43 60 / 0 0 0 0
=
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