Wind
3 mph
SSE
Local Forecast
Current conditions, 5-day forecast, active weather alerts for St. Helena, CA
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Hour-by-Hour Current Observation
Fog/Mist
Wind
3 mph
SSE
UV Index
3
Moderate
Humidity
100%
Dew 53°F
Sun
6:59 AM · 7:04 PM
Rise · Set
Source: SANTA ROSA (KSTS). Slider scrubs the next 12 hours.
5-Day Outlook
Tuesday
Overnight Fog
Overnight: Forecast Missing
Tuesday
Areas of fog before 10am. Sunny, with a high near 84. South wind 0 to 3 mph.
Night
Areas of fog after 2am. Partly cloudy, with a low around 53. West wind around 2 mph.
Wednesday
Forecast Missing
Overnight: Forecast Missing
Wednesday
Patchy fog before 9am. Mostly sunny, with a high near 90. North northwest wind around 2 mph.
Night
Partly cloudy, with a low around 56. West northwest wind around 2 mph.
Thursday
Forecast Missing
Overnight: Forecast Missing
Thursday
Mostly sunny, with a high near 89.
Night
Mostly cloudy, with a low around 55.
Friday
Forecast Missing
Overnight: Forecast Missing
Friday
Mostly sunny, with a high near 82.
Night
Partly cloudy, with a low around 51.
Saturday
Forecast Missing
Overnight: Forecast Missing
Saturday
Mostly sunny, with a high near 80.
Night
Patchy fog after 4am. Partly cloudy, with a low around 50.
St. Helena, CA Weather Analysis Tools
Regional Radar
Composite reflectivity with Lightning overlay.
Regional Observations
Regional & historic weather conditions near St. Helena, CA.
Active Alerts
Per-location alert detail and NWS source feeds.
Storm Reports
Recent storm reports including wind, hail, and tornadoes.
Model Analysis
Interactive forecast model guidance.
Satellite Imagery
GOES-East and GOES-West, visible and infrared.