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Glen Ellen, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Glen Ellen, a community in Sonoma County, California.

Today
90°F
Sunny
Sunny. High near 90, with temperatures falling to around 85 in the afternoon. Southwest wind 0 to 5 mph.

7-day forecast for Glen Ellen

WhenTempForecastWindPrecip
Today 90°F Sunny 0 to 5 mph SW 0%
Tonight 53°F Partly Cloudy 0 to 3 mph WNW 0%
Sunday 83°F Partly Sunny 1 mph S 0%
Sunday Night 52°F Mostly Cloudy 1 mph WSW 0%
Monday 84°F Patchy Fog then Mostly Sunny 3 mph SW 0%
Monday Night 51°F Partly Cloudy 0 to 3 mph SW 0%
Tuesday 84°F Areas Of Fog then Sunny 2 mph SW 0%
Tuesday Night 52°F Mostly Clear 2 mph SW 0%
Wednesday 93°F Sunny 0 mph 0%
Wednesday Night 59°F Mostly Clear 0 mph 0%
Thursday 96°F Sunny 2 mph NW 0%
Thursday Night 57°F Mostly Clear 2 mph WSW 0%
Friday 89°F Mostly Sunny 2 mph WSW 0%
Friday Night 54°F Partly Cloudy 2 mph WSW 1%

Forecast source: National Weather Service (api.weather.gov) for Glen Ellen (38.355, -122.543). Updated through the day.

Growing snapshot for Glen Ellen

Last spring frost
Mar 2
First fall frost
Nov 27
Growing season
270 days
Hardiness zone
9b

More local growing data for Glen Ellen: nearby ZIP 95431 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Sonoma, Ca (4.5 mi from Glen Ellen). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.