Zone Forecast Product
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
332
FPUS56 KSTO 220022
ZFPSTO
Interior Northern California Zone Forecasts for California
National Weather Service Sacramento CA
521 PM PDT Thu Aug 21 2025
Spot temperatures and probabilities of measurable precipitation
are for tonight, Friday, Friday night, and Saturday.
CAZ013-221100-
Shasta Lake Area / Northern Shasta County-
Including the city of Shasta Dam
521 PM PDT Thu Aug 21 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...
.TONIGHT...Clear. Lows 57 to 72 higher elevations...65 to
75 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 northeast winds up to 10 mph
shifting to the south in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 60 to 75 higher elevations...
68 to 78 lower elevations. Light winds.
.SATURDAY...Partly cloudy in the morning then clearing. Highs
87 to 102 higher elevations...98 to 106 lower elevations. Light
winds becoming south up to 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows 59 to 74 higher elevations...
67 to 77 lower elevations. Prevailing south winds up to 10 mph in
the evening becoming light.
.SUNDAY...Mostly sunny. Highs 87 to 102.
.SUNDAY NIGHT...Clear. Lows 59 to 74.
.MONDAY...Sunny. Highs 88 to 103.
.MONDAY NIGHT AND TUESDAY...Mostly clear. A slight chance of rain
showers. Lows 58 to 73. Highs 87 to 102.
.TUESDAY NIGHT...Partly cloudy with a chance of rain showers.
Lows 57 to 72.
.WEDNESDAY...Partly cloudy with a slight chance of rain showers.
Highs 82 to 97.
.WEDNESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 55 to 70.
.THURSDAY...Mostly sunny. Highs 80 to 95.
&&
TEMPERATURE / PRECIPITATION
SHASTA DAM 73 104 76 104 / 0 0 0 0
$$
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CAZ014-221100-
Burney Basin / Eastern Shasta County-
Including the city of Burney
521 PM PDT Thu Aug 21 2025
.TONIGHT...Clear. Lows 50 to 62. Light winds.
.FRIDAY...Mostly sunny. Highs 88 to 99. Light winds becoming west
up to 10 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 54 to 67. Prevailing west
winds up to 10 mph in the evening becoming light.
.SATURDAY...Partly cloudy in the morning then clearing. Highs
88 to 98. Light winds becoming west up to 10 mph in the
afternoon.
.SATURDAY NIGHT...Partly cloudy. Lows 54 to 67. Prevailing west
winds up to 10 mph in the evening becoming light.
.SUNDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 83 to 95.
.SUNDAY NIGHT...Mostly clear. Lows 51 to 65.
.MONDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 83 to 96.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 50 to 64.
.TUESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 82 to 95.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 49 to 64.
.WEDNESDAY...Partly cloudy with a slight chance of rain showers.
Highs 78 to 91.
.WEDNESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 48 to 62.
.THURSDAY...Partly cloudy with a slight chance of rain showers.
Highs 76 to 89.
&&
TEMPERATURE / PRECIPITATION
BURNEY 54 96 59 96 / 0 0 0 0
$$
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CAZ015-221100-
Northern Sacramento Valley-
Including the cities of Redding and Red Bluff
521 PM PDT Thu Aug 21 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...
.TONIGHT...Clear. Lows 67 to 75. Light winds.
.FRIDAY...Mostly sunny. Highs 100 to 106. Light winds becoming
south up to 10 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 70 to 78. South winds up to
10 mph with gusts to around 20 mph in the evening becoming light.
.SATURDAY...Mostly sunny. Highs 100 to 106. Light winds becoming
south up to 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows 70 to 76. Southeast winds up
to 10 mph. Gusts up to 20 mph in the evening.
.SUNDAY...Mostly sunny. Highs 99 to 105.
.SUNDAY NIGHT...Clear. Lows 69 to 75.
.MONDAY...Sunny. Highs 99 to 105.
.MONDAY NIGHT...Mostly clear. Lows 69 to 75.
.TUESDAY...Sunny. Highs 97 to 103.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 67 to 73.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 93 to 99.
Lows 65 to 73.
.THURSDAY...Sunny. Highs 91 to 97.
&&
TEMPERATURE / PRECIPITATION
REDDING 67 105 70 106 / 0 0 0 0
RED BLUFF 68 104 72 104 / 0 0 0 0
$$
=
CAZ016-221100-
Central Sacramento Valley-
Including the cities of Chico, Oroville, and Marysville/Yuba City
521 PM PDT Thu Aug 21 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...
.TONIGHT...Mostly clear. Lows 62 to 72. South winds up to 10 mph
in the evening becoming light.
.FRIDAY...Sunny. Highs around 101. Light winds becoming south up
to 10 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 66 to 76. Southeast winds up
to 10 mph.
.SATURDAY...Mostly sunny. Highs around 100. Light winds becoming
south up to 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows 65 to 73. South winds up to
10 mph. Gusts up to 20 mph in the evening.
.SUNDAY...Mostly sunny. Highs around 99.
.SUNDAY NIGHT...Clear. Lows 64 to 72.
.MONDAY THROUGH TUESDAY...Clear. Highs around 97. Lows 63 to 72.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 61 to
69. Highs around 95.
.THURSDAY...Sunny. Highs around 92.
&&
TEMPERATURE / PRECIPITATION
CHICO 72 102 76 102 / 0 0 0 0
OROVILLE 69 102 72 102 / 0 0 0 0
MARYSVILLE/YUBA CITY 66 102 69 101 / 0 0 0 10
$$
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CAZ017-221100-
Southern Sacramento Valley-
Including the city of Sacramento
521 PM PDT Thu Aug 21 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...
.TONIGHT...Mostly clear. Lows 61 to 71. South winds up to 10 mph.
.FRIDAY...Sunny. Highs 98 to 104. Southwest winds up to 10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 62 to 72. Southwest winds up
to 10 mph.
.SATURDAY...Mostly sunny. Highs 96 to 104. Southwest winds up to
10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 61 to 71. Southwest winds up
to 10 mph with gusts to around 20 mph.
.SUNDAY...Mostly sunny. Highs 94 to 102.
.SUNDAY NIGHT...Clear. Lows 59 to 69.
.MONDAY AND MONDAY NIGHT...Clear. Highs 92 to 100. Lows 59 to 69.
.TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 89 to 99.
Lows 58 to 68.
.THURSDAY...Sunny. Highs 89 to 95.
&&
TEMPERATURE / PRECIPITATION
SACRAMENTO 66 103 68 101 / 0 0 0 10
SAC EXEC AIRPORT 64 101 65 98 / 0 0 0 10
$$
=
CAZ018-221100-
Carquinez Strait and Delta-
Including the city of Fairfield/Suisun
521 PM PDT Thu Aug 21 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...
.TONIGHT...Mostly clear. Lows 58 to 66. Southwest winds 10 to
15 mph.
.FRIDAY...Mostly sunny. Highs 91 to 97. West winds around 10 mph
with gusts to around 20 mph.
.FRIDAY NIGHT...Mostly clear. Lows 59 to 67. West winds 10 to
15 mph.
.SATURDAY...Mostly sunny. Highs 89 to 95...except 83 to 89 near
the bay. Southwest winds 10 to 15 mph with gusts to around
25 mph.
.SATURDAY NIGHT...Mostly clear. Lows 58 to 66. Southwest winds
10 to 15 mph with gusts to around 25 mph.
.SUNDAY...Sunny. Highs 86 to 92.
.SUNDAY NIGHT...Clear. Lows 58 to 64.
.MONDAY THROUGH TUESDAY...Clear. Highs 86 to 92. Lows 58 to 64.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows 58 to 64. Highs
84 to 90.
.WEDNESDAY NIGHT AND THURSDAY...Clear. Lows 57 to 63. Highs 83 to
89.
&&
TEMPERATURE / PRECIPITATION
FAIRFIELD/SUISUN 61 100 62 95 / 0 0 0 10
$$
=
CAZ019-221100-
Northern San Joaquin Valley-
Including the cities of Stockton and Modesto
521 PM PDT Thu Aug 21 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...
.TONIGHT...Partly cloudy. Lows 64 to 74. Northwest winds up to
10 mph. Gusts up to 20 mph in the evening.
.FRIDAY...Sunny. Highs 98 to 104. Northwest winds up to 10 mph.
.FRIDAY NIGHT...Mostly clear. Lows 65 to 75. Northwest winds up
to 10 mph.
.SATURDAY...Mostly sunny. Highs 96 to 102. Northwest winds up to
10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 64 to 74. Northwest winds up
to 10 mph.
.SUNDAY...Partly cloudy with a slight chance of rain showers.
Highs 94 to 100.
.SUNDAY NIGHT...Clear. Lows 62 to 72.
.MONDAY...Partly cloudy with a slight chance of rain showers.
Highs 93 to 99.
.MONDAY NIGHT...Clear. Lows 60 to 70.
.TUESDAY...Partly cloudy with a slight chance of rain showers.
Highs 92 to 98.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 59 to
69. Highs 88 to 98.
.THURSDAY...Sunny. Highs 88 to 94.
&&
TEMPERATURE / PRECIPITATION
STOCKTON 65 104 67 102 / 0 0 10 10
MODESTO 70 103 72 102 / 0 0 10 10
$$
=
CAZ063-221100-
Mountains Southwestern Shasta County to Western Colusa County-
Including the city of Alder Springs
521 PM PDT Thu Aug 21 2025
...HEAT ADVISORY IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT
SATURDAY...
.TONIGHT...Clear. Lows 62 to 74 higher elevations...70 to
78 lower elevations. Prevailing west winds up to 10 mph.
.FRIDAY...Mostly sunny. Highs 81 to 96 higher elevations...97 to
103 lower elevations. Prevailing north winds up to 10 mph
shifting to the southeast in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 65 to 77 higher elevations...
73 to 81 lower elevations. Prevailing south winds up to 10 mph
shifting to the west after midnight.
.SATURDAY...Partly cloudy in the morning then clearing. Highs
82 to 97 higher elevations...98 to 103 lower elevations.
Prevailing northwest winds up to 10 mph shifting to the southeast
in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows 64 to 76 higher elevations...
71 to 79 lower elevations. Prevailing south winds up to 10 mph in
the evening becoming light.
.SUNDAY...Mostly sunny. Highs 83 to 98.
.SUNDAY NIGHT...Clear. Lows 64 to 79.
.MONDAY...Sunny. Highs 83 to 98.
.MONDAY NIGHT...Mostly clear. Lows 63 to 78.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with a slight chance
of rain showers. Highs 80 to 95. Lows 63 to 78.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 59 to 74.
Highs 77 to 92.
&&
TEMPERATURE / PRECIPITATION
ALDER SPRINGS 68 88 70 89 / 0 0 0 10
$$
=
CAZ066-221100-
Northeast Foothills/Sacramento Valley-
Including the city of Paradise
521 PM PDT Thu Aug 21 2025
.TONIGHT...Clear. Lows 68 to 78. 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 71 to 81. Prevailing south
winds up to 10 mph shifting to the east after midnight.
.SATURDAY...Mostly sunny. Highs 91 to 103. Light winds becoming
southwest up to 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows 70 to 78. Prevailing south
winds up to 10 mph shifting to the east after midnight.
.SUNDAY...Mostly sunny. Highs 88 to 102.
.SUNDAY NIGHT...Clear. Lows 68 to 76.
.MONDAY...Sunny. Highs 88 to 102.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 66 to 76. Highs
87 to 102.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 66 to 74.
.WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 83 to 97.
Lows 63 to 74.
.THURSDAY...Sunny. Highs 81 to 95.
&&
TEMPERATURE / PRECIPITATION
PARADISE 75 96 78 96 / 0 0 0 0
$$
=
CAZ067-221100-
Motherlode-
Including the cities of Grass Valley and Jackson
521 PM PDT Thu Aug 21 2025
.TONIGHT...Mostly clear. Lows 66 to 76. Light winds.
.FRIDAY...Mostly sunny. Highs 93 to 103. Light winds becoming
southwest up to 10 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 69 to 79. Light winds.
.SATURDAY...Mostly sunny. Highs 93 to 101. Light winds becoming
southwest up to 10 mph in the afternoon.
.SATURDAY NIGHT...Mostly cloudy in the evening then clearing.
Lows 66 to 76. Prevailing west winds up to 10 mph in the evening
becoming light.
.SUNDAY...Partly cloudy with a slight chance of rain showers.
Highs 90 to 100.
.SUNDAY NIGHT...Clear. Lows 65 to 75.
.MONDAY...Partly cloudy with a slight chance of rain showers.
Highs 89 to 99.
.MONDAY NIGHT...Mostly clear. Lows 64 to 74.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy with a slight chance
of rain showers. Highs 84 to 97. Lows 63 to 74.
.WEDNESDAY NIGHT...Mostly clear. Lows 61 to 69.
.THURSDAY...Sunny. Highs 83 to 93.
&&
TEMPERATURE / PRECIPITATION
GRASS VALLEY 68 96 71 96 / 0 0 0 0
JACKSON 70 99 71 97 / 0 0 10 10
$$
=
CAZ068-221100-
Western Plumas County/Lassen Park-
Including the cities of Chester and Quincy
521 PM PDT Thu Aug 21 2025
.TONIGHT...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. Prevailing southwest
winds up to 10 mph in the evening becoming light.
.SATURDAY...Mostly sunny. Highs 77 to 92 higher elevations...
83 to 98 lower elevations. Light winds becoming southwest up to
10 mph in the afternoon.
.SATURDAY NIGHT...Partly cloudy. Lows 59 to 74. Prevailing
southwest winds up to 10 mph in the evening becoming light.
.SUNDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 78 to 93.
.SUNDAY NIGHT...Mostly clear. Lows 57 to 72.
.MONDAY...Partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Highs 77 to 92.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 55 to 70.
.TUESDAY...Partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Highs 76 to 91.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 53 to 68.
.WEDNESDAY...Partly cloudy with a chance of rain showers. Highs
72 to 87.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. A slight chance of
rain showers. Lows 51 to 66. Highs 71 to 86.
&&
TEMPERATURE / PRECIPITATION
QUINCY 51 101 56 101 / 0 0 0 10
CHESTER 53 96 57 95 / 0 0 0 10
$$
=
CAZ069-221100-
West Slope Northern Sierra Nevada-
Including the city of Blue Canyon
521 PM PDT Thu Aug 21 2025
.TONIGHT...Mostly clear. Lows 53 to 68 higher elevations...62 to
76 lower elevations. Light winds becoming east up to 10 mph after
midnight.
.FRIDAY...Mostly sunny. Highs 76 to 91 higher elevations...90 to
100 lower elevations. Prevailing southeast winds up to 10 mph
shifting to the southwest in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 55 to 70 higher elevations...
64 to 79 lower elevations. Prevailing west winds up to 10 mph
shifting to the east after midnight.
.SATURDAY...Mostly sunny in the morning, then partly cloudy with
a chance of rain showers and a slight chance of thunderstorms in
the afternoon. Highs 74 to 89 higher elevations...88 to 98 lower
elevations. Prevailing east winds up to 10 mph shifting to the
southwest in the afternoon.
.SATURDAY NIGHT...Mostly cloudy with a chance of rain showers in
the evening, then partly cloudy with a slight chance of rain
showers after midnight. Lows 53 to 68 higher elevations...63 to
77 lower elevations. Prevailing west winds up to 10 mph shifting
to the east after midnight.
.SUNDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 76 to 91.
.SUNDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 55 to 70.
.MONDAY...Mostly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Highs 75 to 90.
.MONDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 53 to 68.
.TUESDAY...Partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Highs 72 to 87.
.TUESDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 51 to 66.
.WEDNESDAY...Partly cloudy with a chance of rain showers. Highs
69 to 84.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. A slight chance of
rain showers. Lows 49 to 64. Highs 69 to 84.
&&
TEMPERATURE / PRECIPITATION
BLUE CANYON 69 88 72 88 / 0 0 0 10
$$
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