Whitewater, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Whitewater, a community in Riverside County, California.
This Afternoon
76°F
Mostly Sunny
Mostly sunny, with a high near 76. West wind around 15 mph, with gusts as high as 30 mph.
7-day forecast for Whitewater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Mostly Sunny | 15 mph W | 0% |
| Tonight | 57°F | Mostly Clear | 20 to 25 mph W | 0% |
| Wednesday | 76°F | Sunny | 5 to 20 mph W | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 10 mph NE | 0% |
| Thursday | 77°F | Sunny | 5 to 10 mph NE | 0% |
| Thursday Night | 61°F | Mostly Clear | 5 to 10 mph NE | 0% |
| Friday | 80°F | Sunny | 10 to 15 mph NE | 0% |
| Friday Night | 63°F | Clear | 10 to 25 mph NE | 0% |
| Saturday | 81°F | Sunny | 10 to 30 mph NE | 0% |
| Saturday Night | 64°F | Clear | 10 to 20 mph NE | 0% |
| Sunday | 81°F | Sunny | 5 to 20 mph NE | 0% |
| Sunday Night | 66°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Monday | 81°F | Mostly Sunny | 5 to 10 mph W | 0% |
| Monday Night | 65°F | Partly Cloudy | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Whitewater (33.936, -116.687). Updated through the day.
Growing snapshot for Whitewater
Last spring frost
Feb 25
First fall frost
Dec 15
Growing season
297 days
Hardiness zone
9b
More local growing data for Whitewater: nearby ZIP 92282 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Morongo Valley N, Ca (10.2 mi from Whitewater). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.