Saint Helena, CA Weather Forecast and Current Conditions

WEATHER ALERTS - Coastal Flood Advisory - Cold Weather Advisory

Current Conditions From Nearby Local Station

38°F
Feels Like 38°F  
Humidity 84% Dew Point 34°F Wind Calm Barometer 30.22 in.
Report from a personal weather station 0.4 mi. WSW of central Saint Helena
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Point Forecast at a Glance

ThuDec 4
Thu Dec 4: Sunny, High 62F, Low 42F
62
42
FriDec 5
Fri Dec 5: Sunny, High 64F, Low 43F
64
43
SatDec 6
Sat Dec 6: 10am And Noon, High 64F, Low 45F
64
45
SunDec 7
Sun Dec 7: Mostly Cloudy, High 65F, Low 43F
65
43
MonDec 8
Mon Dec 8: Mostly Cloudy, High 66F, Low 45F
66
45
TueDec 9
Tue Dec 9: Mostly Cloudy, High 66F, Low 46F
66
46
WedDec 10
Wed Dec 10: Mostly Cloudy, High 68F
68
 

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 62°F to 68°F. Dry weather expected throughout the week.

Climate Context

This week's forecast shows temperatures running 8°F above the historical average for December. Normal highs for this period are around 57°F with lows around 38°F.

This Date in Weather History

1982 - The temperature in New York City's Central Park reached 72 degrees to establish a record high for December. The month as a whole was also the warmest of record.

More on this and other weather history

Saint Helena, CA 7 Day Weather Forecast Details

Thursday Dec 4

Sunny

Day: Sunny, with a high near 62. South wind around 5 mph becoming calm in the afternoon.

Mostly Clear

Night: Mostly clear, with a low around 42. Light and variable wind.

Friday Dec 5

Sunny

Day: Sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.

Partly Cloudy

Night: Patchy fog before 1am. Otherwise, mostly clear, with a low around 43. Calm wind becoming north around 6 mph after midnight.

Saturday Dec 6

10am And Noon

Day: Areas of fog between 10am and noon. Otherwise, sunny, with a high near 64. Calm wind becoming northwest around 6 mph in the afternoon.

Partly Cloudy

Night: Patchy fog. Otherwise, partly cloudy, with a low around 45.

Sunday Dec 7

Mostly Cloudy

Day: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 65.

Partly Cloudy

Night: Patchy fog. Otherwise, partly cloudy, with a low around 43.

Monday Dec 8

Mostly Cloudy

Day: Patchy fog before 10am. Otherwise, sunny, with a high near 66.

Partly Cloudy

Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 45.

Tuesday Dec 9

Mostly Cloudy

Day: Patchy fog. Otherwise, mostly sunny, with a high near 66.

Partly Cloudy

Night: Areas of fog. Otherwise, mostly cloudy, with a low around 46.

Wednesday Dec 10

Mostly Cloudy

Day: Patchy fog. Otherwise, mostly sunny, with a high near 68.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.