171
FPUS56 KSTO 231722
ZFPSTO

Interior Northern California Zone Forecasts for California
National Weather Service Sacramento CA
1022 AM PDT Sat Aug 23 2025

Spot temperatures and probabilities of measurable precipitation
are for today, tonight, and Sunday.


CAZ013-232300-
Shasta Lake Area / Northern Shasta County-
Including the city of Shasta Dam
1022 AM PDT Sat Aug 23 2025

...HEAT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.TODAY...Areas of smoke early in the morning. Mostly sunny. Highs
87 to 102 higher elevations...97 to 106 lower elevations. Light
winds becoming south up to 10 mph in the afternoon.
.TONIGHT...Mostly clear. Areas of smoke after midnight. Lows
62 to 77. Light winds.
.SUNDAY...Partly cloudy in the morning then clearing. Highs 85 to
100 higher elevations...96 to 104 lower elevations. Light winds
becoming southeast up to 10 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear. Cooler. Lows 58 to 73 higher
elevations...67 to 77 lower elevations. Prevailing south winds up
to 10 mph in the evening becoming light.
.MONDAY...Sunny. Highs 85 to 100 higher elevations...96 to
105 lower elevations. Light winds.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 58 to 73.
.TUESDAY...Partly cloudy with a slight chance of rain showers.
Highs 85 to 100.
.TUESDAY NIGHT...Partly cloudy with a chance of rain showers.
Lows 56 to 71.
.WEDNESDAY...Mostly sunny. Highs 81 to 96.
.WEDNESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 54 to 69.
.THURSDAY...Sunny. Highs 79 to 94.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 52 to 67. Highs
78 to 93.

&&
                        TEMPERATURE  /  PRECIPITATION
SHASTA DAM            104   75  102  /   0    0    0


$$
=

CAZ014-232300-
Burney Basin / Eastern Shasta County-
Including the city of Burney
1022 AM PDT Sat Aug 23 2025

.TODAY...Partly cloudy in the morning then clearing. Highs 87 to
99. Light winds becoming west up to 10 mph in the afternoon.
.TONIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Lows 55 to 68. Prevailing southwest winds up to 10 mph in
the evening becoming light.
.SUNDAY...Mostly cloudy in the morning, then partly cloudy with a
slight chance of showers and thunderstorms in the afternoon.
Highs 82 to 94. Light winds.
.SUNDAY NIGHT...Mostly clear. A slight chance of rain showers in
the evening. Cooler. Lows 50 to 64. Light winds.
.MONDAY...Mostly sunny. A slight chance of showers and
thunderstorms in the afternoon. Highs 80 to 91 higher
elevations...90 to 95 lower elevations. Light winds.
.MONDAY NIGHT...Partly cloudy with a slight chance of showers and
thunderstorms. Lows 49 to 63.
.TUESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 80 to 93.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 48 to 62.
.WEDNESDAY...Mostly sunny. Highs 78 to 91.
.WEDNESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 46 to 59.
.THURSDAY...Sunny. Highs 76 to 89.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 44 to 57. Highs
75 to 89.

&&
                        TEMPERATURE  /  PRECIPITATION
BURNEY                 96   59   91  /   0   10   10


$$
=

CAZ015-232300-
Northern Sacramento Valley-
Including the cities of Redding and Red Bluff
1022 AM PDT Sat Aug 23 2025

...HEAT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.TODAY...Partly cloudy in the morning then becoming mostly sunny.
Areas of smoke until late afternoon. Highs around 103. Light
winds becoming south up to 10 mph with gusts to around 20 mph in
the afternoon.
.TONIGHT...Mostly clear. Lows 70 to 76. South winds around 10 mph
with gusts to around 20 mph in the evening becoming light.
.SUNDAY...Mostly sunny. Highs 98 to 104. Light winds becoming
south up to 10 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear. Lows 70 to 76. South winds up to
10 mph with gusts to around 20 mph in the evening becoming light.
.MONDAY...Mostly sunny. Highs 98 to 104. Light winds.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 69 to 75.
.TUESDAY...Sunny. Highs 97 to 103.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 66 to 72.
.WEDNESDAY THROUGH THURSDAY...Clear. Highs 92 to 98. Lows 63 to
72.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 61 to 67. Highs
around 93.

&&
                        TEMPERATURE  /  PRECIPITATION
REDDING               105   72  103  /   0    0    0
RED BLUFF             104   72  101  /   0    0    0


$$
=

CAZ016-232300-
Central Sacramento Valley-
Including the cities of Chico, Oroville, and Marysville/Yuba City
1022 AM PDT Sat Aug 23 2025

...HEAT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.TODAY...Partly cloudy in the morning then clearing. Areas of
smoke until late afternoon. Highs around 101. Light winds
becoming south up to 10 mph with gusts to around 20 mph in the
afternoon.
.TONIGHT...Areas of smoke in the evening. Mostly clear. Lows
65 to 73. Southeast winds up to 10 mph. Gusts up to 20 mph in the
evening.
.SUNDAY...Mostly sunny. Highs around 99. Southeast winds up to
10 mph.
.SUNDAY NIGHT...Clear. Lows 64 to 72. Southeast winds up to
10 mph.
.MONDAY...Mostly sunny. Highs around 98. Light winds becoming
south up to 10 mph in the afternoon.
.MONDAY NIGHT...Clear. Lows 64 to 72.
.TUESDAY...Sunny. Highs around 97.
.TUESDAY NIGHT...Mostly clear. Lows 62 to 68.
.WEDNESDAY THROUGH FRIDAY...Clear. Highs around 92. Lows 58 to
68.

&&
                        TEMPERATURE  /  PRECIPITATION
CHICO                 102   73  100  /   0   10   10
OROVILLE              102   71  100  /   0   10   10
MARYSVILLE/YUBA CITY  101   67  100  /   0   10   10


$$
=

CAZ017-232300-
Southern Sacramento Valley-
Including the city of Sacramento
1022 AM PDT Sat Aug 23 2025

...HEAT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.TODAY...Mostly sunny. Highs 95 to 103. South winds up to 10 mph
with gusts to around 20 mph.
.TONIGHT...Partly cloudy. Lows 60 to 70. South winds up to 10 mph
with gusts to around 20 mph.
.SUNDAY...Mostly sunny. Highs 94 to 102. South winds up to
10 mph.
.SUNDAY NIGHT...Clear. Lows 60 to 70. Southwest winds up to
10 mph with gusts to around 20 mph.
.MONDAY...Sunny. Highs 93 to 101. Southwest winds up to 10 mph.
.MONDAY NIGHT...Clear. Lows 59 to 69.
.TUESDAY...Mostly sunny. Highs 91 to 99.
.TUESDAY NIGHT THROUGH FRIDAY...Clear. Lows 56 to 66. Highs 88 to
98.

&&
                        TEMPERATURE  /  PRECIPITATION
SACRAMENTO            100   65   98  /  10   10   10
SAC EXEC AIRPORT       96   63   96  /  10   10   10


$$
=

CAZ018-232300-
Carquinez Strait and Delta-
Including the city of Fairfield/Suisun
1022 AM PDT Sat Aug 23 2025

...HEAT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.TODAY...Partly cloudy in the morning then clearing. Highs 88 to
94. West winds 10 to 15 mph with gusts to around 25 mph.
.TONIGHT...Mostly clear. Lows 58 to 66. Southwest winds 10 to
15 mph with gusts to around 25 mph.
.SUNDAY...Sunny. Highs 87 to 93...except 81 to 87 near the bay.
West winds 10 to 15 mph with gusts to around 25 mph.
.SUNDAY NIGHT...Clear. Lows 57 to 63. Southwest winds 10 to
15 mph with gusts to around 25 mph.
.MONDAY...Sunny. Near the bay, mostly cloudy in the morning then
clearing. Highs 86 to 92. Southwest winds 10 to 15 mph with gusts
to around 25 mph.
.MONDAY NIGHT...Clear. Lows 58 to 64.
.TUESDAY...Sunny. Highs 85 to 91.
.TUESDAY NIGHT THROUGH FRIDAY...Clear. Lows 57 to 63. Highs 84 to
90.

&&
                        TEMPERATURE  /  PRECIPITATION
FAIRFIELD/SUISUN       94   60   92  /   0   10   10


$$
=

CAZ019-232300-
Northern San Joaquin Valley-
Including the cities of Stockton and Modesto
1022 AM PDT Sat Aug 23 2025

...HEAT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.TODAY...Mostly sunny. Highs 96 to 102. Northwest winds up to
10 mph.
.TONIGHT...Mostly cloudy in the evening, then partly cloudy with
a slight chance of rain showers after midnight. Lows 63 to 73.
Northwest winds up to 10 mph.
.SUNDAY...Mostly sunny. A slight chance of rain showers in the
morning. Highs 94 to 100. Northwest winds up to 10 mph.
.SUNDAY NIGHT...Clear. Lows 61 to 71. Northwest winds up to
10 mph.
.MONDAY...Sunny. Highs 94 to 100. Northwest winds up to 10 mph.
.MONDAY NIGHT...Clear. Lows 61 to 71.
.TUESDAY...Sunny. Highs 91 to 97.
.TUESDAY NIGHT THROUGH FRIDAY...Clear. Lows 58 to 68. Highs 87 to
97.

&&
                        TEMPERATURE  /  PRECIPITATION
STOCKTON              100   65   98  /  10   10   20
MODESTO               101   69   99  /  10   20   20


$$
=

CAZ063-232300-
Mountains Southwestern Shasta County to Western Colusa County-
Including the city of Alder Springs
1022 AM PDT Sat Aug 23 2025

...HEAT ADVISORY IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.TODAY...Partly cloudy. Areas of smoke. Highs 81 to 96 higher
elevations...97 to 103 lower elevations. Prevailing north winds
up to 10 mph shifting to the southeast in the afternoon.
.TONIGHT...Mostly clear. Areas of smoke after midnight. Lows
64 to 74 higher elevations...71 to 79 lower elevations.
Prevailing south winds up to 10 mph in the evening becoming
light.
.SUNDAY...Sunny. Highs 79 to 94 higher elevations...96 to
101 lower elevations. Prevailing north winds up to 10 mph
shifting to the southeast in the afternoon.
.SUNDAY NIGHT...Mostly clear. Lows 63 to 75 higher elevations...
71 to 79 lower elevations. Prevailing south winds up to 10 mph
shifting to the northwest after midnight.
.MONDAY...Mostly sunny. Highs 79 to 94 higher elevations...96 to
102 lower elevations. Light winds becoming east up to 10 mph in
the afternoon.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 63 to 78.
.TUESDAY...Partly cloudy with a slight chance of rain showers.
Highs 81 to 96.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 61 to 75.
.WEDNESDAY...Mostly sunny. Highs 78 to 93.
.WEDNESDAY NIGHT AND THURSDAY...Clear. Lows 58 to 72. Highs 77 to
92.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 55 to 69. Highs
75 to 90.

&&
                        TEMPERATURE  /  PRECIPITATION
ALDER SPRINGS          88   69   87  /   0    0   10


$$
=

CAZ066-232300-
Northeast Foothills/Sacramento Valley-
Including the city of Paradise
1022 AM PDT Sat Aug 23 2025

.TODAY...Mostly sunny. Highs 92 to 104. Light winds becoming
southwest up to 10 mph in the afternoon.
.TONIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Lows 70 to 78. Prevailing south winds up to 10 mph in the
evening becoming light.
.SUNDAY...Partly cloudy in the morning then clearing. Highs 88 to
102. Light winds becoming southwest up to 10 mph in the
afternoon.
.SUNDAY NIGHT...Clear. Lows 67 to 77. Prevailing south winds up
to 10 mph in the evening becoming light.
.MONDAY...Mostly sunny. Highs 88 to 102. Light winds.
.MONDAY NIGHT...Mostly clear. Lows 66 to 76.
.TUESDAY...Mostly sunny. Highs 86 to 100.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 65 to 73.
.WEDNESDAY THROUGH THURSDAY...Clear. Highs 82 to 96. Lows 62 to
73.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 60 to 68. Highs
80 to 94.

&&
                        TEMPERATURE  /  PRECIPITATION
PARADISE               96   75   94  /   0   10   10


$$
=

CAZ067-232300-
Motherlode-
Including the cities of Grass Valley and Jackson
1022 AM PDT Sat Aug 23 2025

.TODAY...Mostly sunny. Highs 92 to 102. Light winds becoming west
up to 10 mph in the afternoon.
.TONIGHT...Mostly cloudy with a slight chance of rain showers.
Lows 68 to 76. Light winds.
.SUNDAY...Mostly cloudy in the morning then becoming mostly
sunny. A slight chance of rain showers. Highs 90 to 100. Light
winds becoming southwest up to 10 mph in the afternoon.
.SUNDAY NIGHT...Mostly clear. Lows 65 to 75. Light winds.
.MONDAY...Mostly sunny. A slight chance of rain showers in the
afternoon. Highs 89 to 99. Light winds becoming southwest up to
10 mph in the afternoon.
.MONDAY NIGHT...Mostly clear. Lows 65 to 73.
.TUESDAY...Partly cloudy with a slight chance of rain showers.
Highs 87 to 97.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows 61 to 71. Highs
84 to 97.
.WEDNESDAY NIGHT THROUGH FRIDAY...Clear. Lows 58 to 69. Highs
82 to 94.

&&
                        TEMPERATURE  /  PRECIPITATION
GRASS VALLEY           95   70   93  /  10   20   10
JACKSON                97   69   96  /  10   20   20


$$
=

CAZ068-232300-
Western Plumas County/Lassen Park-
Including the cities of Chester and Quincy
1022 AM PDT Sat Aug 23 2025

.TODAY...Mostly sunny. Highs 77 to 92 higher elevations...84 to
98 lower elevations. Light winds becoming southwest up to 10 mph
in the afternoon.
.TONIGHT...Partly cloudy in the evening then becoming mostly
cloudy. Lows 58 to 73. Prevailing southwest winds up to 10 mph in
the evening becoming light.
.SUNDAY...Mostly cloudy in the morning then becoming partly
cloudy. At higher elevations, a slight chance of rain showers in
the morning, then a chance of rain showers and a slight chance of
thunderstorms in the afternoon. At lower elevations, a chance of
rain showers and a slight chance of thunderstorms in the
afternoon. Highs 72 to 87 higher elevations...79 to 93 lower
elevations. Light winds becoming south up to 10 mph in the
afternoon.
.SUNDAY NIGHT...Mostly clear. Cooler. Lows 55 to 70. Prevailing
west winds up to 10 mph in the evening becoming light.
.MONDAY...Mostly sunny in the morning, then mostly cloudy with a
chance of rain showers and a slight chance of thunderstorms in
the afternoon. Highs 73 to 88 higher elevations...79 to 94 lower
elevations. Light winds becoming southwest up to 10 mph in the
afternoon.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 54 to 69.
.TUESDAY...Partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Highs 75 to 90.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. A slight chance of
rain showers. Lows 53 to 68. Highs 74 to 89.
.WEDNESDAY NIGHT AND THURSDAY...Clear. Lows 51 to 66. Highs 72 to
87.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 48 to 63. Highs
70 to 85.

&&
                        TEMPERATURE  /  PRECIPITATION
QUINCY                 99   56   93  /  10   20   40
CHESTER                95   57   89  /  10   10   30


$$
=

CAZ069-232300-
West Slope Northern Sierra Nevada-
Including the city of Blue Canyon
1022 AM PDT Sat Aug 23 2025

.TODAY...Mostly sunny in the morning then becoming partly cloudy.
At higher elevations, a slight chance of showers and
thunderstorms early in the afternoon. A chance of rain showers
and a slight chance of thunderstorms late in the afternoon. At
lower elevations, a slight chance of rain showers late in the
afternoon. Highs 75 to 90 higher elevations...89 to 99 lower
elevations. Prevailing southeast winds up to 10 mph shifting to
the southwest in the afternoon.
.TONIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening, then a chance of rain showers and a
slight chance of thunderstorms after midnight. Cooler. Lows 52 to
67 higher elevations...63 to 77 lower elevations. Prevailing east
winds up to 10 mph.
.SUNDAY...Mostly cloudy. A chance of rain showers in the morning,
then a chance of rain showers and a slight chance of
thunderstorms in the afternoon. Highs 70 to 85 higher
elevations...86 to 96 lower elevations. Prevailing east winds up
to 10 mph shifting to the southwest in the afternoon.
.SUNDAY NIGHT...Mostly clear. A chance of rain showers and a
slight chance of thunderstorms in the evening. Lows 50 to
65 higher elevations...62 to 76 lower elevations. Prevailing west
winds up to 10 mph shifting to the east after midnight.
.MONDAY...Partly cloudy with a slight chance of rain showers in
the morning, then mostly cloudy with a chance of rain showers and
a slight chance of thunderstorms in the afternoon. Highs 69 to
84 higher elevations...85 to 95 lower elevations. Prevailing east
winds up to 10 mph shifting to the west in the afternoon.
.MONDAY NIGHT...Partly cloudy with a chance of rain showers. Lows
53 to 68.
.TUESDAY...Partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Highs 72 to 87.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 51 to 66.
.WEDNESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 70 to 85.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. A slight chance of
rain showers. Lows 49 to 64. Highs 70 to 85.
.THURSDAY NIGHT...Mostly clear. Lows 48 to 63.
.FRIDAY...Sunny. Highs 69 to 84.

&&
                        TEMPERATURE  /  PRECIPITATION
BLUE CANYON            88   70   84  /  10   20   20


$$
=