Lake Mathews, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Mathews, a community in Riverside County, California.
This Afternoon
81°F
Sunny
Sunny, with a high near 81. Northwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Lake Mathews
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Sunny | 10 mph NW | 0% |
| Tonight | 58°F | Mostly Clear | 0 to 10 mph NE | 0% |
| Saturday | 85°F | Sunny | 0 to 10 mph NW | 0% |
| Saturday Night | 61°F | Mostly Clear | 0 to 10 mph E | 0% |
| Sunday | 82°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Sunday Night | 61°F | Mostly Cloudy | 0 to 5 mph SW | 2% |
| Monday | 79°F | Mostly Sunny | 0 to 10 mph SW | 2% |
| Monday Night | 59°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Tuesday | 83°F | Sunny | 0 to 10 mph W | 0% |
| Tuesday Night | 62°F | Clear | 0 to 10 mph NW | 0% |
| Wednesday | 92°F | Sunny | 0 to 10 mph NW | 3% |
| Wednesday Night | 66°F | Mostly Clear | 0 to 10 mph N | 4% |
| Thursday | 92°F | Sunny | 0 to 10 mph NW | 5% |
| Thursday Night | 67°F | Mostly Clear | 0 to 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Lake Mathews (33.825, -117.368). Updated through the day.
Growing snapshot for Lake Mathews
Last spring frost
Jan 28
First fall frost
Dec 18
Growing season
329 days
Hardiness zone
9b
More local growing data for Lake Mathews: nearby ZIP 92570 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Elsinore, Ca (6.6 mi from Lake Mathews). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.