395
FPUS56 KSTO 200022
ZFPSTO

Interior Northern California Zone Forecasts for California
National Weather Service Sacramento CA
521 PM PDT Tue Aug 19 2025

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


CAZ013-201100-
Shasta Lake Area / Northern Shasta County-
Including the city of Shasta Dam
521 PM PDT Tue Aug 19 2025

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

.TONIGHT...Clear. Lows 50 to 65 higher elevations...58 to
68 lower elevations. Light winds. Gusts up to 20 mph.
.WEDNESDAY...Sunny, warmer. Highs 81 to 96 higher elevations...
92 to 101 lower elevations. Light winds.
.WEDNESDAY NIGHT...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...
99 to 107 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...65 to
75 lower elevations. Light winds becoming north up to 10 mph
after midnight.
.FRIDAY...Mostly sunny. Highs 89 to 104.
.FRIDAY NIGHT...Mostly clear. Lows 60 to 75.
.SATURDAY...Mostly sunny. Highs 89 to 104.
.SATURDAY NIGHT THROUGH TUESDAY...Clear. Lows 60 to 75. Highs
87 to 102.

&&
                           TEMPERATURE    /    PRECIPITATION
SHASTA DAM             66   99   72  105  /   0    0    0    0


$$
=

CAZ014-201100-
Burney Basin / Eastern Shasta County-
Including the city of Burney
521 PM PDT Tue Aug 19 2025

.TONIGHT...Clear. Lows 41 to 56. Prevailing west winds up to
10 mph in the evening becoming light.
.WEDNESDAY...Sunny. Highs 80 to 91. Light winds.
.WEDNESDAY NIGHT...Clear. Lows 46 to 59. Light winds.
.THURSDAY...Sunny, warmer. Highs 87 to 99. Light winds.
.THURSDAY NIGHT...Clear. Lows 51 to 63. Prevailing west winds up
to 10 mph in the evening becoming light.
.FRIDAY...Mostly sunny. Highs 88 to 99.
.FRIDAY NIGHT...Mostly clear. Lows 53 to 65.
.SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 87 to 99. Lows
53 to 66.
.SUNDAY...Sunny. Highs 86 to 98.
.SUNDAY NIGHT...Mostly clear. Lows 52 to 65.
.MONDAY...Sunny. Highs 84 to 97.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 51 to 65. Highs
81 to 96.

&&
                           TEMPERATURE    /    PRECIPITATION
BURNEY                 47   89   51   96  /   0    0    0    0


$$
=

CAZ015-201100-
Northern Sacramento Valley-
Including the cities of Redding and Red Bluff
521 PM PDT Tue Aug 19 2025

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

.TONIGHT...Clear. Lows 60 to 68. South winds up to 10 mph in the
evening becoming light.
.WEDNESDAY...Sunny. Highs around 98. North winds up to 10 mph.
.WEDNESDAY NIGHT...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 67 to 74. Light winds.
.FRIDAY...Mostly sunny. Highs 100 to 106.
.FRIDAY NIGHT...Mostly clear. Lows 70 to 76.
.SATURDAY...Mostly sunny. Highs 101 to 106.
.SATURDAY NIGHT THROUGH TUESDAY...Clear. Lows 68 to 75. Highs
96 to 106.

&&
                           TEMPERATURE    /    PRECIPITATION
REDDING                61  100   66  106  /   0    0    0    0
RED BLUFF              63  100   69  104  /   0    0    0    0


$$
=

CAZ016-201100-
Central Sacramento Valley-
Including the cities of Chico, Oroville, and Marysville/Yuba City
521 PM PDT Tue Aug 19 2025

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

.TONIGHT...Clear. Lows 56 to 66. South winds up to 10 mph in the
evening becoming light.
.WEDNESDAY...Sunny. Highs around 97. Northwest winds up to
10 mph.
.WEDNESDAY NIGHT...Clear. Lows 63 to 71. Northwest winds up to
10 mph.
.THURSDAY...Sunny. Highs around 100. 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 101.
.FRIDAY NIGHT...Mostly clear. Lows 66 to 74.
.SATURDAY...Mostly sunny. Highs around 101.
.SATURDAY NIGHT THROUGH TUESDAY...Clear. Lows 63 to 72. Highs
95 to 101.

&&
                           TEMPERATURE    /    PRECIPITATION
CHICO                  66   99   69  101  /   0    0    0    0
OROVILLE               62   99   66  101  /   0    0    0    0
MARYSVILLE/YUBA CITY   58   98   64  101  /   0    0    0    0


$$
=

CAZ017-201100-
Southern Sacramento Valley-
Including the city of Sacramento
521 PM PDT Tue Aug 19 2025

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

.TONIGHT...Clear. Lows 54 to 64. South winds up to 10 mph with
gusts to around 20 mph.
.WEDNESDAY...Sunny, warmer. Highs 95 to 101. Northwest winds up
to 10 mph.
.WEDNESDAY NIGHT...Clear. Lows 61 to 71. West winds up to 10 mph
in the evening becoming light.
.THURSDAY...Mostly sunny. Highs 99 to 105. West winds up to
10 mph.
.THURSDAY NIGHT...Mostly clear. Lows 62 to 72. Southwest winds up
to 10 mph.
.FRIDAY...Mostly sunny. Highs 98 to 104.
.FRIDAY NIGHT...Mostly clear. Lows 62 to 72.
.SATURDAY...Mostly sunny. Highs 96 to 104.
.SATURDAY NIGHT...Clear. Lows 60 to 70.
.SUNDAY...Mostly sunny. Highs 94 to 102.
.SUNDAY NIGHT THROUGH TUESDAY...Clear. Lows 59 to 69. Highs 91 to
101.

&&
                           TEMPERATURE    /    PRECIPITATION
SACRAMENTO             59   99   66  102  /   0    0    0    0
SAC EXEC AIRPORT       58   98   64  103  /   0    0    0    0


$$
=

CAZ018-201100-
Carquinez Strait and Delta-
Including the city of Fairfield/Suisun
521 PM PDT Tue Aug 19 2025

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

.TONIGHT...Clear. Lows around 57. Southwest winds 10 to 15 mph
with gusts to around 25 mph.
.WEDNESDAY...Sunny. Highs 90 to 96. West winds around 10 mph with
gusts to around 20 mph.
.WEDNESDAY NIGHT...Clear. Lows 60 to 66. West winds 10 to 15 mph.
.THURSDAY...Mostly sunny. Highs 94 to 100. 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.
.FRIDAY NIGHT...Mostly clear. Lows 59 to 67.
.SATURDAY THROUGH TUESDAY...Clear. Highs 86 to 92. Lows 57 to 67.

&&
                           TEMPERATURE    /    PRECIPITATION
FAIRFIELD/SUISUN       57   98   62  101  /   0    0    0    0


$$
=

CAZ019-201100-
Northern San Joaquin Valley-
Including the cities of Stockton and Modesto
521 PM PDT Tue Aug 19 2025

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

.TONIGHT...Clear. Lows 55 to 65. Northwest winds up to 10 mph
with gusts to around 20 mph.
.WEDNESDAY...Sunny. Highs 91 to 99. Northwest winds up to 15 mph.
.WEDNESDAY NIGHT...Clear. Lows 61 to 71. Northwest winds up to
10 mph with gusts to around 20 mph.
.THURSDAY...Mostly sunny. 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...Sunny. Highs 98 to 104.
.FRIDAY NIGHT...Mostly clear. Lows 65 to 75.
.SATURDAY AND SATURDAY NIGHT...Clear. Highs 96 to 102. Lows 64 to
74.
.SUNDAY...Mostly sunny. Highs 94 to 102.
.SUNDAY NIGHT THROUGH TUESDAY...Clear. Lows 62 to 72. Highs 91 to
101.

&&
                           TEMPERATURE    /    PRECIPITATION
STOCKTON               57   99   63  103  /   0    0    0    0
MODESTO                61   96   67  101  /   0    0    0    0


$$
=

CAZ063-201100-
Mountains Southwestern Shasta County to Western Colusa County-
Including the city of Alder Springs
521 PM PDT Tue Aug 19 2025

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

.TONIGHT...Clear. Lows 55 to 67 higher elevations...64 to
72 lower elevations. Prevailing southwest winds up to 10 mph
shifting to the northwest after midnight.
.WEDNESDAY...Sunny, warmer. Highs 76 to 91 higher elevations...
92 to 98 lower elevations. Prevailing north winds up to 10 mph.
.WEDNESDAY NIGHT...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...
97 to 104 lower elevations. Prevailing northwest winds up to
10 mph shifting to the northeast in the afternoon.
.THURSDAY NIGHT...Mostly clear. Lows 63 to 75 higher elevations...
70 to 78 lower elevations. Prevailing southwest winds up to
10 mph shifting to the northwest after midnight.
.FRIDAY...Mostly sunny. Highs 85 to 100.
.FRIDAY NIGHT...Mostly clear. Lows 66 to 80.
.SATURDAY...Mostly sunny. Highs 85 to 100.
.SATURDAY NIGHT THROUGH TUESDAY...Clear. Lows 64 to 79. Highs
83 to 98.

&&
                           TEMPERATURE    /    PRECIPITATION
ALDER SPRINGS          61   83   68   88  /   0    0    0    0


$$
=

CAZ066-201100-
Northeast Foothills/Sacramento Valley-
Including the city of Paradise
521 PM PDT Tue Aug 19 2025

.TONIGHT...Clear. Lows 60 to 69. Prevailing south winds up to
10 mph in the evening becoming light.
.WEDNESDAY...Sunny, warmer. Highs 86 to 98. Light winds becoming
west up to 10 mph in the afternoon.
.WEDNESDAY NIGHT...Clear. Lows 65 to 75. 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 68 to 78. Light winds
becoming east up to 10 mph after midnight.
.FRIDAY...Mostly sunny. Highs 92 to 104.
.FRIDAY NIGHT...Mostly clear. Lows 68 to 78.
.SATURDAY...Mostly sunny. Highs 91 to 105.
.SATURDAY NIGHT THROUGH TUESDAY...Clear. Lows 67 to 78. Highs
88 to 103.

&&
                           TEMPERATURE    /    PRECIPITATION
PARADISE               67   91   73   95  /   0    0    0    0


$$
=

CAZ067-201100-
Motherlode-
Including the cities of Grass Valley and Jackson
521 PM PDT Tue Aug 19 2025

.TONIGHT...Clear. Lows 57 to 67. Light winds.
.WEDNESDAY...Sunny. Highs 87 to 97. Light winds becoming west up
to 10 mph in the afternoon.
.WEDNESDAY NIGHT...Clear. Lows 63 to 71. Prevailing northwest
winds up to 10 mph in the evening becoming light.
.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 94 to 104.
.FRIDAY NIGHT...Mostly clear. Lows 68 to 78.
.SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 94 to 102.
Lows 67 to 78.
.SUNDAY...Partly cloudy with a slight chance of rain showers.
Highs 92 to 100.
.SUNDAY NIGHT...Mostly clear. Lows 66 to 76.
.MONDAY...Sunny. Highs 89 to 99.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 64 to 74. Highs
85 to 99.

&&
                           TEMPERATURE    /    PRECIPITATION
GRASS VALLEY           59   90   65   94  /   0    0    0    0
JACKSON                61   93   66   97  /   0    0    0    0


$$
=

CAZ068-201100-
Western Plumas County/Lassen Park-
Including the cities of Chester and Quincy
521 PM PDT Tue Aug 19 2025

.TONIGHT...Clear. Lows 47 to 62. Prevailing southwest winds up to
10 mph in the evening becoming light.
.WEDNESDAY...Sunny, warmer. Highs 71 to 86 higher elevations...
78 to 92 lower elevations. Light winds becoming west up to 10 mph
in the afternoon.
.WEDNESDAY NIGHT...Clear. Lows 53 to 68. Prevailing west winds up
to 10 mph shifting to the northeast 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 81 to 96.
.FRIDAY NIGHT...Mostly clear. Lows 57 to 72.
.SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 81 to 96. Lows
58 to 73.
.SUNDAY...Partly cloudy with a slight chance of rain showers.
Highs 80 to 95.
.SUNDAY NIGHT...Mostly clear. Lows 57 to 72.
.MONDAY...Partly cloudy with a slight chance of rain showers.
Highs 78 to 93.
.MONDAY NIGHT...Mostly clear. Lows 55 to 70.
.TUESDAY...Partly cloudy with a slight chance of rain showers.
Highs 74 to 89.

&&
                           TEMPERATURE    /    PRECIPITATION
QUINCY                 43   94   48  101  /   0    0    0    0
CHESTER                44   89   50   95  /   0    0    0    0


$$
=

CAZ069-201100-
West Slope Northern Sierra Nevada-
Including the city of Blue Canyon
521 PM PDT Tue Aug 19 2025

.TONIGHT...Clear. Lows 43 to 58 higher elevations...53 to
67 lower elevations. Prevailing west winds up to 10 mph shifting
to the east after midnight.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...Clear. Lows 49 to 64 higher elevations...58 to
72 lower elevations. Prevailing west winds up to 10 mph shifting
to the northeast 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...
62 to 77 lower elevations. Prevailing west winds up to 10 mph
shifting to the east after midnight.
.FRIDAY...Mostly sunny. Highs 81 to 96.
.FRIDAY NIGHT...Mostly clear. Lows 58 to 73.
.SATURDAY...Partly cloudy with a chance of rain showers and a
slight chance of thunderstorms. Highs 79 to 94.
.SATURDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 58 to 73.
.SUNDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 77 to 92.
.SUNDAY NIGHT...Partly cloudy with a slight chance of rain
showers. Lows 56 to 71.
.MONDAY...Partly 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 54 to 69.
.TUESDAY...Partly cloudy with a slight chance of showers and
thunderstorms. Highs 71 to 86.

&&
                           TEMPERATURE    /    PRECIPITATION
BLUE CANYON            60   82   66   86  /   0    0    0    0


$$
=