Kelseyville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Kelseyville, a community in Lake County, California.
Tonight
54°F
Mostly Clear
Mostly clear, with a low around 54. Southwest wind around 5 mph.
7-day forecast for Kelseyville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Mostly Clear | 5 mph SW | 0% |
| Saturday | 90°F | Sunny | 2 to 6 mph W | 0% |
| Saturday Night | 55°F | Partly Cloudy | 1 to 6 mph WNW | 0% |
| Sunday | 88°F | Partly Sunny | 1 to 6 mph SE | 0% |
| Sunday Night | 56°F | Mostly Cloudy | 0 to 6 mph W | 0% |
| Monday | 91°F | Sunny | 0 to 8 mph W | 0% |
| Monday Night | 55°F | Mostly Clear | 0 to 8 mph WNW | 0% |
| Tuesday | 91°F | Sunny | 0 to 7 mph WSW | 0% |
| Tuesday Night | 55°F | Mostly Clear | 1 to 7 mph NW | 0% |
| Wednesday | 93°F | Sunny | 1 to 6 mph E | 0% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 6 mph NW | 0% |
| Thursday | 93°F | Sunny | 0 to 7 mph SSW | 0% |
| Thursday Night | 57°F | Partly Cloudy | 1 to 7 mph WNW | 1% |
| Friday | 86°F | Mostly Sunny | 1 to 8 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Kelseyville (38.970, -122.831). Updated through the day.
Growing snapshot for Kelseyville
Last spring frost
Feb 25
First fall frost
Dec 3
Growing season
279 days
Hardiness zone
8b
More local growing data for Kelseyville: nearby ZIP 95435 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
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Middletown
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North Lakeport
Soda Bay
Spring Valley
Upper Lake
Climate data from the nearest NOAA station, Cloverdale, Ca (16.6 mi from Kelseyville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.