Lake Riverside, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Riverside, a community in Riverside County, California.
This Afternoon
77°F
Sunny
Sunny, with a high near 77. West wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Lake Riverside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 10 mph W | 2% |
| Tonight | 49°F | Mostly Clear | 0 to 5 mph N | 2% |
| Saturday | 81°F | Sunny | 0 to 10 mph W | 0% |
| Saturday Night | 54°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Sunday | 80°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Monday | 74°F | Sunny | 0 to 10 mph W | 1% |
| Monday Night | 50°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Tuesday | 78°F | Sunny | 0 to 10 mph NW | 1% |
| Tuesday Night | 55°F | Clear | 0 to 10 mph NE | 0% |
| Wednesday | 86°F | Sunny | 0 to 10 mph E | 3% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 5 mph E | 3% |
| Thursday | 87°F | Sunny | 5 to 10 mph SE | 8% |
| Thursday Night | 61°F | Mostly Clear | 0 to 5 mph E | 2% |
Forecast source: National Weather Service (api.weather.gov) for Lake Riverside (33.519, -116.812). Updated through the day.
Growing snapshot for Lake Riverside
Last spring frost
Apr 29
First fall frost
Nov 18
Growing season
201 days
Hardiness zone
9b
More local growing data for Lake Riverside: nearby ZIP 92536 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Palomar Mtn Obsy, Ca (8 mi from Lake Riverside). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.