Kelseyville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Kelseyville, a community in Lake County, California.
Tonight
42°F
Patchy Fog
Patchy fog. Mostly cloudy, with a low around 42. South southwest wind around 3 mph.
7-day forecast for Kelseyville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Patchy Fog | 3 mph SSW | 2% |
| Wednesday | 64°F | Patchy Fog then Partly Sunny | 2 to 8 mph WNW | 1% |
| Wednesday Night | 39°F | Partly Cloudy | 6 mph S | 0% |
| Thursday | 72°F | Sunny | 1 to 5 mph NNW | 0% |
| Thursday Night | 42°F | Mostly Clear | 1 to 5 mph NNW | 0% |
| Friday | 75°F | Sunny | 2 mph NW | 0% |
| Friday Night | 45°F | Mostly Clear | 1 mph NW | 0% |
| Saturday | 76°F | Sunny | 0 to 3 mph ESE | 0% |
| Saturday Night | 43°F | Mostly Clear | 2 mph NW | 0% |
| Sunday | 73°F | Mostly Sunny | 3 mph NW | 0% |
| Sunday Night | 43°F | Mostly Cloudy then Areas Of Fog | 2 mph NNW | 0% |
| Monday | 70°F | Areas Of Fog then Partly Sunny | 0 to 5 mph NW | 4% |
| Monday Night | 42°F | Partly Cloudy | 0 to 3 mph NW | 5% |
| Tuesday | 70°F | Mostly Sunny then Slight Chance Light Rain | 0 to 3 mph WNW | 16% |
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
Clearlake
Clearlake Oaks
Clearlake Riviera
Cobb
Hidden Valley Lake
Lakeport
Lower Lake
Lucerne
Middletown
Nice
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 Nov 4, 2026.