Harman US

Kelseyville, CA Weather & Growing Conditions

Overnight
61°F
Mostly Clear
Mostly clear, with a low around 61. Southwest wind around 3 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 61°F Mostly Clear 3 mph SW 0%
Saturday 85°F Sunny 1 to 6 mph W 0%
Saturday Night 63°F Partly Cloudy 2 to 6 mph WNW 0%
Sunday 82°F Partly Sunny 2 to 6 mph ESE 0%
Sunday Night 63°F Mostly Cloudy 1 to 6 mph WNW 0%
Monday 84°F Sunny 1 to 7 mph WSW 0%
Monday Night 62°F Mostly Clear 1 to 7 mph WNW 0%
Tuesday 85°F Sunny 1 to 7 mph W 0%
Tuesday Night 63°F Mostly Clear 2 to 7 mph NW 0%
Wednesday 88°F Sunny 2 to 6 mph ESE 0%
Wednesday Night 67°F Mostly Clear 1 to 6 mph NW 0%
Thursday 87°F Sunny 2 to 7 mph S 0%
Thursday Night 65°F Partly Cloudy 2 to 7 mph WNW 1%
Friday 82°F Mostly Sunny 2 to 7 mph W 1%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Kelseyville, CA

Last spring frost
Apr 10
First fall frost
Nov 6
Growing season
209 days
Hardiness zone
9b

Explore more for Kelseyville, CA: full frost dates · planting calendar · California frost dates

Climate data from the nearest NOAA station, Clearlake 4 Se, Ca (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.