Weather in Saint Helena, CA
Updated 2026-09-26 09:00 local time · ZIP codes 94574
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
60°12% rain66°10% rain71°9% rain74°8% rain77°9% rain78°9% rain78°9% rain77°9% rain74°9% rain70°10% rain
64°12% rain60°14% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 14%).
It feels like 56°F with winds near 3 mph.
70°F, 10% rain chance and 5 mph wind.
Visibility is around 6 mi; gusts may reach 17 mph.
Current temperature is 60°F, wind 3 mph, rain chance up to 14%.
UV index is 1.
Local weather characteristics in Saint Helena
California weather varies from cool marine conditions along parts of the Pacific coast to hot inland valleys, deserts and snowy mountain climates. Short distances can produce large temperature differences.
Saint Helena is part of the West weather region. The forecast point is near 38.51°N latitude and 122.47°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Saint Helena weather today
Overcast and 60°F in Saint Helena, CA. Today's high is 78°F with a 10% rain chance. Winds are around 3 mph with gusts near 3 mph. Relative humidity is 52%, pressure is 29.94 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Saint Helena
Sunrise is at 07:01 AM and sunset is at 07:01 PM. Tomorrow's forecast calls for Sunny with a high near 76°F and a low near 52°F. The maximum rain chance is 7%.