Right now🌫️
Current conditions · St. Helena, CA
48°
Fog
Feels like 48°
💨 Wind
0 mph N
💧 Humidity
100%
🌫️ Dew pt
48°
👁️ Visibility
0.5 mi
NWSObserved at Santa Rosa, Santa Rosa Sonoma County Airport
Weather · St. Helena
St. Helena forecast & conditions
Current conditions, the 7-day outlook and hour-by-hour details for St. Helena, straight from the National Weather Service. Watches and warnings show up first.
Loading the local forecast…
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7-Day forecast
Tonight
☀️
92°
56°
0%
Sunny
Fri
⛅
92°
59°
0%
Partly Sunny
Sat
⛅
98°
63°
0%
Mostly Sunny
Sun
⛅
97°
62°
2%
Mostly Sunny
Mon
☀️
96°
62°
0%
Sunny
Tue
☀️
96°
61°
0%
Sunny
Wed
☀️
94°
1%
Sunny
Climate · a normal year
What a year in St. Helena feels like
St. Helena has mild winters and warm summers. A typical July afternoon reaches 89°, a January night drops to 38°, and snow is almost unheard of.
+10°
10° warmer than normal today. The forecast high is 92°, and a typical Oct 1 in St. Helena peaks around 82°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
59° / 38°Winter
72° / 44°Spring
88° / 53°Summer
77° / 47°Fall
How much snow does St. Helena get?Almost none.Rain & snow →When is the first frost?Around Dec 4, with the last in spring around Feb 3.Frost dates →Is it warmer than it used to be?+1.5° vs. the 20th century.Then & now →
See St. Helena’s full climate →
NOAA U.S. Climate Normals, 1991–2020. A normal is a 30-year average, not a forecast.
The forecast is temporarily unavailable.
Data from the U.S. National Weather Service (weather.gov) — free public data, not modified by TownTapestry. Not a substitute for official warnings; always follow weather.gov and local authorities.