Hourly Weather Forecast - Saint Helena, CA

12 AM
46°F
90%
5mph
S
Light Rain
Humidity
98%
Feels like
43°F
Dew Point
45°F
1 AM
46°F
90%
4mph
S
Light Rain
Humidity
97%
Feels like
44°F
Dew Point
45°F
2 AM
46°F
90%
4mph
S
Light Rain
Humidity
97%
Feels like
44°F
Dew Point
45°F
3 AM
46°F
90%
3mph
S
Light Rain
Humidity
98%
Feels like
45°F
Dew Point
45°F
4 AM
46°F
90%
3mph
S
Rain
Humidity
98%
Feels like
45°F
Dew Point
45°F
5 AM
47°F
90%
3mph
S
Rain
Humidity
98%
Feels like
46°F
Dew Point
46°F
6 AM
46°F
80%
3mph
S
80% Chance of Rain
Humidity
99%
Feels like
46°F
Dew Point
46°F
7 AM
46°F
80%
3mph
S
80% Chance Rain Showers
Humidity
100%
Feels like
46°F
Dew Point
46°F
7:25 AM
8 AM
47°F
80%
3mph
S
80% Chance Rain Showers
Humidity
100%
Feels like
46°F
Dew Point
47°F
9 AM
47°F
80%
3mph
S
80% Chance Rain Showers
Humidity
100%
Feels like
46°F
Dew Point
47°F
10 AM
47°F
80%
4mph
S
80% Chance Rain Showers
Humidity
100%
Feels like
46°F
Dew Point
47°F
11 AM
47°F
80%
4mph
S
80% Chance Rain Showers
Humidity
100%
Feels like
45°F
Dew Point
47°F
12 PM
47°F
80%
4mph
S
80% Chance Rain Showers
Humidity
100%
Feels like
45°F
Dew Point
47°F
1 PM
47°F
90%
4mph
S
Light Rain
Humidity
100%
Feels like
45°F
Dew Point
47°F
2 PM
47°F
90%
3mph
S
Rain Showers
Humidity
100%
Feels like
46°F
Dew Point
47°F
3 PM
47°F
80%
3mph
SSE
80% Chance Rain Showers
Humidity
100%
Feels like
47°F
Dew Point
47°F
4 PM
44°F
80%
2mph
SSE
80% Chance Rain Showers
Humidity
100%
Feels like
44°F
Dew Point
44°F
4:55 PM
5 PM
43°F
60%
2mph
SE
60% Chance Rain Showers
Humidity
100%
Feels like
43°F
Dew Point
43°F
6 PM
42°F
50%
2mph
SE
50% Chance of Light Rain
Humidity
100%
Feels like
42°F
Dew Point
42°F
7 PM
43°F
50%
2mph
ESE
50% Chance of Light Rain
Humidity
100%
Feels like
43°F
Dew Point
43°F
8 PM
43°F
50%
2mph
E
50% Chance of Light Rain
Humidity
100%
Feels like
43°F
Dew Point
43°F

Rain And Snow Totals Through Monday

Atmospheric River Takes Aim For Northern California

The plume of abundant moisture impacting the Northwest the last several days will focus more on Northern California later today into Monday bringing heavy rainfall and mountain snow.

NOAA, NCDC

White Christmas? What Are The Odds

Sunday's Weather Outlook

Sunday's Weather Outlook

Cold weather

During Extreme Cold: Watch for Frostbite!

Flu Update Valid For Week Ending December 13, 2025

Weekly Flu Update: Flu Spreading Hard Across U.S.

Watch vs. Warning

Flash Flood Watch and Warning Defined

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