Clearlake Riviera, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clearlake Riviera, a community in Lake County, California.
Today
61°F
Mostly Sunny
Mostly sunny. High near 61, with temperatures falling to around 57 in the afternoon. West southwest wind 1 to 9 mph, with gusts as high as 18 mph.
7-day forecast for Clearlake Riviera
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Mostly Sunny | 1 to 9 mph WSW | 2% |
| Tonight | 42°F | Partly Cloudy | 6 to 9 mph W | 2% |
| Thursday | 68°F | Sunny | 0 to 6 mph WNW | 0% |
| Thursday Night | 47°F | Mostly Clear | 1 mph NNW | 0% |
| Friday | 71°F | Sunny | 1 mph W | 0% |
| Friday Night | 49°F | Mostly Clear | 1 mph NW | 0% |
| Saturday | 71°F | Sunny | 2 mph SSE | 0% |
| Saturday Night | 48°F | Mostly Clear | 1 mph NW | 0% |
| Sunday | 70°F | Mostly Sunny | 2 mph NW | 0% |
| Sunday Night | 48°F | Partly Cloudy | 1 mph NW | 0% |
| Monday | 65°F | Mostly Sunny | 2 mph WNW | 2% |
| Monday Night | 46°F | Partly Cloudy | 1 mph NW | 2% |
| Tuesday | 67°F | Sunny then Slight Chance Light Rain | 2 mph NW | 15% |
| Tuesday Night | 47°F | Slight Chance Light Rain | 2 mph WSW | 21% |
Forecast source: National Weather Service (api.weather.gov) for Clearlake Riviera (38.951, -122.722). Updated through the day.
Growing snapshot for Clearlake Riviera
Last spring frost
Apr 10
First fall frost
Nov 6
Growing season
209 days
Hardiness zone
9b
More local growing data for Clearlake Riviera: nearby ZIP 95451 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Clearlake
Clearlake Oaks
Cobb
Hidden Valley Lake
Kelseyville
Lakeport
Lower Lake
Lucerne
Middletown
Nice
North Lakeport
Soda Bay
Spring Valley
Upper Lake
Climate data from the nearest NOAA station, Clearlake 4 Se, Ca (12 mi from Clearlake Riviera). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.