Muscoy, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Muscoy, a community in San Bernardino County, California.
Tonight
61°F
Mostly Clear
Mostly clear, with a low around 61. South wind around 0 mph.
7-day forecast for Muscoy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Mostly Clear | 0 mph | 2% |
| Saturday | 88°F | Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 64°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Sunday | 86°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Sunday Night | 64°F | Partly Cloudy | 0 to 5 mph SW | 1% |
| Monday | 82°F | Sunny | 0 to 5 mph SW | 1% |
| Monday Night | 62°F | Mostly Clear | 0 to 5 mph W | 1% |
| Tuesday | 86°F | Sunny | 0 to 5 mph W | 0% |
| Tuesday Night | 66°F | Clear | 0 to 5 mph NW | 0% |
| Wednesday | 94°F | Sunny | 0 to 10 mph W | 2% |
| Wednesday Night | 69°F | Mostly Clear | 0 to 5 mph NW | 2% |
| Thursday | 95°F | Sunny | 0 to 5 mph NW | 4% |
| Thursday Night | 70°F | Mostly Clear | 0 to 5 mph S | 2% |
| Friday | 93°F | Sunny | 0 to 5 mph SW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Muscoy (34.155, -117.348). Updated through the day.
Growing snapshot for Muscoy
Last spring frost
Jan 27
First fall frost
Dec 19
Growing season
329 days
Hardiness zone
10a
More local growing data for Muscoy: nearby ZIP 92411 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Redlands, Ca (9.6 mi from Muscoy). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.