Hourly Weather Forecast - Saint Helena, CA

9 AM
50°F
10%
0mph
S
Foggy
Humidity
100%
Feels like
50°F
Dew Point
50°F
10 AM
51°F
10%
1mph
S
Foggy
Humidity
100%
Feels like
51°F
Dew Point
51°F
11 AM
51°F
10%
1mph
S
Foggy
Humidity
100%
Feels like
51°F
Dew Point
51°F
12 PM
52°F
10%
2mph
S
Foggy
Humidity
100%
Feels like
52°F
Dew Point
52°F
1 PM
53°F
10%
2mph
S
Foggy
Humidity
99%
Feels like
53°F
Dew Point
52°F
2 PM
53°F
10%
2mph
S
Partly Cloudy
Humidity
94%
Feels like
53°F
Dew Point
51°F
3 PM
52°F
10%
2mph
S
Partly Cloudy
Humidity
92%
Feels like
52°F
Dew Point
50°F
4 PM
49°F
0%
1mph
SSE
Mostly Cloudy
Humidity
91%
Feels like
49°F
Dew Point
47°F
4:50 PM
5 PM
47°F
0%
1mph
SSE
Mostly Cloudy
Humidity
94%
Feels like
47°F
Dew Point
45°F
6 PM
46°F
0%
1mph
SSE
Mostly Cloudy
Humidity
96%
Feels like
46°F
Dew Point
45°F
7 PM
45°F
0%
0mph
SSE
Mostly Cloudy
Humidity
98%
Feels like
45°F
Dew Point
45°F
8 PM
45°F
0%
1mph
SSE
Mostly Cloudy
Humidity
98%
Feels like
45°F
Dew Point
45°F
9 PM
45°F
0%
1mph
S
Foggy
Humidity
99%
Feels like
45°F
Dew Point
45°F
10 PM
46°F
10%
1mph
SSE
Foggy
Humidity
100%
Feels like
46°F
Dew Point
46°F
11 PM
46°F
10%
1mph
SSE
Foggy
Humidity
100%
Feels like
46°F
Dew Point
46°F

Forecast Peak Wind Gusts Today

High Winds, Rain, and Snow Cross the Country

A clipper moving over the Great Lakes brings rain, snow, and high winds through the Atlantic Coastline.

Rainfall and Snowfall Totals Through Friday

Atmospheric River Symptoms Repeat in the Northwest

Thursday's Weather Outlook

Today's Weather Outlook

Flu Update Valid For Week Ending December 6, 2025

Weekly Flu Update: Flu Exceeds Annual Baseline

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

How to Measure Snow via NWS

How To Measure Snow

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