428
FPUS56 KSTO 200722
ZFPSTO

Interior Northern California Zone Forecasts for California
National Weather Service Sacramento CA
1221 AM PDT Wed Aug 20 2025

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


CAZ013-202300-
Shasta Lake Area / Northern Shasta County-
Including the city of Shasta Dam
1221 AM PDT Wed Aug 20 2025

...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...

.TODAY...Sunny, warmer. Highs 82 to 97 higher elevations...92 to
102 lower elevations. Light winds.
.TONIGHT...Clear. Lows 55 to 70 higher elevations...63 to
75 lower elevations. Light winds becoming north up to 10 mph
after midnight.
.THURSDAY...Sunny, warmer. Highs 88 to 103 higher elevations...
98 to 108 lower elevations. Prevailing north winds up to 10 mph
shifting to the east in the afternoon.
.THURSDAY NIGHT...Clear. Lows 56 to 71 higher elevations...66 to
74 lower elevations. Light winds becoming north up to 10 mph
after midnight.
.FRIDAY...Sunny. Highs 87 to 102 higher elevations...98 to
106 lower elevations. Prevailing north winds up to 10 mph
shifting to the south in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 60 to 75.
.SATURDAY...Mostly sunny. Highs 90 to 105.
.SATURDAY NIGHT...Mostly clear. Lows 62 to 77.
.SUNDAY THROUGH MONDAY...Clear. Highs 88 to 103. Lows 61 to 76.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 58 to 73.
.TUESDAY...Mostly sunny. Highs 84 to 99.

&&
                        TEMPERATURE  /  PRECIPITATION
SHASTA DAM             99   72  105  /   0    0    0


$$
=

CAZ014-202300-
Burney Basin / Eastern Shasta County-
Including the city of Burney
1221 AM PDT Wed Aug 20 2025

.TODAY...Sunny. Highs 80 to 92. Light winds.
.TONIGHT...Clear. Lows 46 to 59. Light winds.
.THURSDAY...Sunny, warmer. Highs 88 to 99. Light winds.
.THURSDAY NIGHT...Clear. Lows 51 to 63. Prevailing west winds up
to 10 mph in the evening becoming light.
.FRIDAY...Sunny. Highs 88 to 99. Light winds becoming west up to
10 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 54 to 66.
.SATURDAY...Mostly sunny. Highs 87 to 99.
.SATURDAY NIGHT...Mostly clear. Lows 53 to 67.
.SUNDAY...Partly cloudy with a slight chance of rain showers.
Highs 84 to 97.
.SUNDAY NIGHT...Mostly clear. Lows 51 to 64.
.MONDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 83 to 97.
.MONDAY NIGHT AND TUESDAY...Mostly clear. A slight chance of rain
showers. Lows 50 to 63. Highs 81 to 96.

&&
                        TEMPERATURE  /  PRECIPITATION
BURNEY                 89   50   95  /   0    0    0


$$
=

CAZ015-202300-
Northern Sacramento Valley-
Including the cities of Redding and Red Bluff
1221 AM PDT Wed Aug 20 2025

...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...

.TODAY...Sunny. Highs 96 to 102. North winds up to 10 mph.
.TONIGHT...Clear. Lows 64 to 74. Northwest winds up to 10 mph.
.THURSDAY...Sunny. Highs 101 to 107. North winds up to 10 mph.
.THURSDAY NIGHT...Clear. Lows 66 to 74. South winds up to 10 mph
in the evening becoming light.
.FRIDAY...Sunny. Highs 100 to 106. Light winds becoming south up
to 10 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 70 to 78.
.SATURDAY...Mostly sunny. Highs 101 to 107.
.SATURDAY NIGHT...Mostly clear. Lows 70 to 76.
.SUNDAY THROUGH MONDAY...Clear. Highs 97 to 105. Lows 69 to 76.
.MONDAY NIGHT...Mostly clear. Lows 68 to 74.
.TUESDAY...Sunny. Highs 95 to 101.

&&
                        TEMPERATURE  /  PRECIPITATION
REDDING               101   66  106  /   0    0    0
RED BLUFF             100   68  105  /   0    0    0


$$
=

CAZ016-202300-
Central Sacramento Valley-
Including the cities of Chico, Oroville, and Marysville/Yuba City
1221 AM PDT Wed Aug 20 2025

...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...

.TODAY...Sunny. Highs around 97. Northwest winds up to 10 mph.
.TONIGHT...Clear. Lows 62 to 72. Light winds.
.THURSDAY...Sunny. Highs around 101. Northwest winds up to
10 mph.
.THURSDAY NIGHT...Mostly clear. Lows 64 to 72. Southeast winds up
to 10 mph.
.FRIDAY...Mostly sunny. Highs around 100. Light winds becoming
south up to 10 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 67 to 75.
.SATURDAY...Mostly sunny. Highs around 101.
.SATURDAY NIGHT...Mostly clear. Lows 65 to 73.
.SUNDAY...Sunny. Highs around 99.
.SUNDAY NIGHT THROUGH MONDAY NIGHT...Mostly clear. Lows 63 to 72.
Highs around 98.
.TUESDAY...Sunny. Highs around 95.

&&
                        TEMPERATURE  /  PRECIPITATION
CHICO                  99   70  102  /   0    0    0
OROVILLE               99   66  101  /   0    0    0
MARYSVILLE/YUBA CITY   98   64  102  /   0    0    0


$$
=

CAZ017-202300-
Southern Sacramento Valley-
Including the city of Sacramento
1221 AM PDT Wed Aug 20 2025

...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...

.TODAY...Sunny. Highs 95 to 101. Northwest winds up to 10 mph.
.TONIGHT...Clear. Lows 61 to 71. West winds up to 10 mph in the
evening becoming light.
.THURSDAY...Mostly sunny. Highs 98 to 104. Light winds becoming
west up to 10 mph in the afternoon.
.THURSDAY NIGHT...Mostly clear. Lows 61 to 71. Southwest winds up
to 10 mph.
.FRIDAY...Mostly sunny. Highs 98 to 104. Southwest winds up to
10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 63 to 73.
.SATURDAY...Mostly sunny. Highs 96 to 104.
.SATURDAY NIGHT...Mostly clear. Lows 61 to 71.
.SUNDAY...Sunny. Highs 93 to 101.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows 59 to 69. Highs
92 to 101.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 58 to 68. Highs 90 to
100.

&&
                        TEMPERATURE  /  PRECIPITATION
SACRAMENTO             99   65  103  /   0    0    0
SAC EXEC AIRPORT       99   64  102  /   0    0    0


$$
=

CAZ018-202300-
Carquinez Strait and Delta-
Including the city of Fairfield/Suisun
1221 AM PDT Wed Aug 20 2025

...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...

.TODAY...Sunny. Highs 91 to 97. West winds up to 10 mph with
gusts to around 20 mph.
.TONIGHT...Clear. Lows 60 to 66. West winds 10 to 15 mph.
.THURSDAY...Mostly sunny. Highs 93 to 99. West winds up to 10 mph
with gusts to around 20 mph.
.THURSDAY NIGHT...Mostly clear. Lows 59 to 65. Southwest winds
10 to 15 mph.
.FRIDAY...Mostly sunny. Highs 91 to 97. West winds around 10 mph
with gusts to around 20 mph.
.FRIDAY NIGHT...Mostly clear. Lows 60 to 68.
.SATURDAY...Sunny. Highs 89 to 95.
.SATURDAY NIGHT AND SUNDAY...Clear. Lows 59 to 67. Highs 88 to
94.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows 57 to 65. Highs
86 to 92.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 57 to 63. Highs 85 to 91.

&&
                        TEMPERATURE  /  PRECIPITATION
FAIRFIELD/SUISUN      100   62  102  /   0    0    0


$$
=

CAZ019-202300-
Northern San Joaquin Valley-
Including the cities of Stockton and Modesto
1221 AM PDT Wed Aug 20 2025

...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...

.TODAY...Sunny. Highs 92 to 100. Northwest winds up to 15 mph.
.TONIGHT...Clear. Lows 61 to 71. Northwest winds up to 10 mph
with gusts to around 20 mph.
.THURSDAY...Partly cloudy in the morning then clearing. Highs
96 to 104. Northwest winds up to 10 mph. Gusts up to 20 mph in
the afternoon.
.THURSDAY NIGHT...Mostly clear. Lows 64 to 74. Northwest winds up
to 10 mph with gusts to around 20 mph.
.FRIDAY...Mostly sunny. Highs 98 to 104. Northwest winds up to
10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 66 to 76.
.SATURDAY...Mostly sunny. Highs 97 to 103.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows 63 to
73. Highs 93 to 103.
.MONDAY...Sunny. Highs 92 to 100.
.MONDAY NIGHT...Mostly clear. Lows 60 to 70.
.TUESDAY...Sunny. Highs 90 to 96.

&&
                        TEMPERATURE  /  PRECIPITATION
STOCKTON              100   64  103  /   0    0    0
MODESTO                97   67  101  /   0    0    0


$$
=

CAZ063-202300-
Mountains Southwestern Shasta County to Western Colusa County-
Including the city of Alder Springs
1221 AM PDT Wed Aug 20 2025

...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...

.TODAY...Sunny, warmer. Highs 76 to 91 higher elevations...93 to
98 lower elevations. Prevailing northwest winds up to 10 mph
shifting to the northeast in the afternoon.
.TONIGHT...Clear. Lows 60 to 74 higher elevations...70 to
78 lower elevations. Prevailing northwest winds up to 10 mph.
.THURSDAY...Sunny, warmer. Highs 81 to 96 higher elevations...
98 to 104 lower elevations. Prevailing northwest winds up to
10 mph shifting to the northeast in the afternoon.
.THURSDAY NIGHT...Clear. Lows 63 to 77. Prevailing southwest
winds up to 10 mph shifting to the northwest after midnight.
.FRIDAY...Sunny. Highs 82 to 97 higher elevations...98 to
103 lower elevations. Prevailing northwest winds up to 10 mph
shifting to the southeast in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 67 to 81.
.SATURDAY...Mostly sunny. Highs 85 to 100.
.SATURDAY NIGHT...Mostly clear. Lows 65 to 80.
.SUNDAY THROUGH MONDAY...Clear. Highs 83 to 98. Lows 65 to 80.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 62 to 77. Highs
81 to 96.

&&
                        TEMPERATURE  /  PRECIPITATION
ALDER SPRINGS          83   68   89  /   0    0    0


$$
=

CAZ066-202300-
Northeast Foothills/Sacramento Valley-
Including the city of Paradise
1221 AM PDT Wed Aug 20 2025

.TODAY...Sunny, warmer. Highs 87 to 99. Prevailing northeast
winds up to 10 mph shifting to the west in the afternoon.
.TONIGHT...Clear. Lows 65 to 76. Light winds becoming northeast
up to 10 mph after midnight.
.THURSDAY...Sunny, warmer. Highs 90 to 104. Prevailing northeast
winds up to 10 mph in the morning becoming light.
.THURSDAY NIGHT...Mostly clear. Lows 67 to 77. Light winds
becoming east up to 10 mph after midnight.
.FRIDAY...Sunny. Highs 91 to 103. Prevailing northeast winds up
to 10 mph shifting to the southwest in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 70 to 80.
.SATURDAY...Mostly sunny. Highs 91 to 105.
.SATURDAY NIGHT...Mostly clear. Lows 69 to 79.
.SUNDAY...Sunny. Highs 89 to 103.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Lows 66 to 76.
Highs 87 to 102.

&&
                        TEMPERATURE  /  PRECIPITATION
PARADISE               92   74   95  /   0    0    0


$$
=

CAZ067-202300-
Motherlode-
Including the cities of Grass Valley and Jackson
1221 AM PDT Wed Aug 20 2025

.TODAY...Sunny. Highs 87 to 97. Light winds becoming west up to
10 mph in the afternoon.
.TONIGHT...Clear. Lows 64 to 72. Light winds. Gusts up to 20 mph.
.THURSDAY...Mostly sunny. Highs 92 to 102. Light winds becoming
west up to 10 mph in the afternoon.
.THURSDAY NIGHT...Mostly clear. Lows 67 to 77. Light winds.
.FRIDAY...Mostly sunny. Highs 93 to 103. Light winds becoming
southwest up to 10 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 69 to 79.
.SATURDAY...Partly cloudy with a slight chance of rain showers.
Highs 93 to 103.
.SATURDAY NIGHT...Mostly clear. Lows 67 to 77.
.SUNDAY...Partly cloudy with a slight chance of rain showers.
Highs 90 to 100.
.SUNDAY NIGHT...Mostly clear. Lows 65 to 75.
.MONDAY...Partly cloudy with a slight chance of rain showers.
Highs 88 to 98.
.MONDAY NIGHT...Mostly clear. Lows 63 to 73.
.TUESDAY...Partly cloudy with a slight chance of rain showers.
Highs 86 to 96.

&&
                        TEMPERATURE  /  PRECIPITATION
GRASS VALLEY           91   65   94  /   0    0    0
JACKSON                93   67   98  /   0    0    0


$$
=

CAZ068-202300-
Western Plumas County/Lassen Park-
Including the cities of Chester and Quincy
1221 AM PDT Wed Aug 20 2025

.TODAY...Sunny, warmer. Highs 72 to 87 higher elevations...78 to
93 lower elevations. Light winds.
.TONIGHT...Clear. Lows 53 to 68. Light winds becoming northeast
up to 10 mph after midnight.
.THURSDAY...Sunny, warmer. Highs 77 to 92 higher elevations...
83 to 98 lower elevations. Prevailing northeast winds up to
10 mph shifting to the south in the afternoon.
.THURSDAY NIGHT...Mostly clear. Lows 57 to 72. Light winds.
.FRIDAY...Mostly sunny. Highs 78 to 93 higher elevations...83 to
98 lower elevations. Light winds becoming southwest up to 10 mph
in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 59 to 74.
.SATURDAY...Mostly sunny. Highs 81 to 96.
.SATURDAY NIGHT...Mostly clear. Lows 58 to 73.
.SUNDAY...Partly cloudy with a slight chance of rain showers.
Highs 79 to 94.
.SUNDAY NIGHT...Mostly clear. Lows 56 to 71.
.MONDAY AND MONDAY NIGHT...Mostly clear. A slight chance of rain
showers. Highs 77 to 92. Lows 56 to 71.
.TUESDAY...Partly cloudy with a chance of rain showers. Highs
74 to 89.

&&
                        TEMPERATURE  /  PRECIPITATION
QUINCY                 95   48  100  /   0    0    0
CHESTER                90   51   94  /   0    0    0


$$
=

CAZ069-202300-
West Slope Northern Sierra Nevada-
Including the city of Blue Canyon
1221 AM PDT Wed Aug 20 2025

.TODAY...Sunny, warmer. Highs 71 to 86 higher elevations...83 to
93 lower elevations. Prevailing east winds up to 10 mph shifting
to the west in the afternoon.
.TONIGHT...Clear. Lows 50 to 65 higher elevations...59 to
73 lower elevations. Prevailing northwest winds up to 10 mph
shifting to the east after midnight.
.THURSDAY...Mostly sunny. Warmer. Highs 75 to 90 higher
elevations...88 to 98 lower elevations. Prevailing east winds up
to 10 mph shifting to the southwest in the afternoon.
.THURSDAY NIGHT...Mostly clear. Lows 54 to 69 higher elevations...
63 to 77 lower elevations. Prevailing west winds up to 10 mph
shifting to the east after midnight.
.FRIDAY...Mostly sunny. A slight chance of rain showers in the
afternoon. Highs 76 to 91 higher elevations...90 to 100 lower
elevations. Prevailing east winds up to 10 mph shifting to the
southwest in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 59 to 74.
.SATURDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 79 to 94.
.SATURDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 57 to 72.
.SUNDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 76 to 91.
.SUNDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 55 to 70.
.MONDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 74 to 89.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 53 to 68.
.TUESDAY...Partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Highs 71 to 86.

&&
                        TEMPERATURE  /  PRECIPITATION
BLUE CANYON            83   66   87  /   0    0    0


$$
=