Round Mountain, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Round Mountain, a community in Shasta County, California.
Overnight
74°F
Clear
Clear, with a low around 74. East northeast wind around 5 mph.
7-day forecast for Round Mountain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 74°F | Clear | 5 mph ENE | 0% |
| Tuesday | 99°F | Sunny | 2 to 6 mph WSW | 0% |
| Tuesday Night | 67°F | Mostly Clear | 1 to 5 mph SE | 0% |
| Wednesday | 96°F | Sunny | 2 to 6 mph WSW | 0% |
| Wednesday Night | 66°F | Clear | 1 to 6 mph SSE | 0% |
| Thursday | 96°F | Sunny | 1 to 6 mph SW | 0% |
| Thursday Night | 65°F | Clear | 1 to 6 mph ESE | 0% |
| Friday | 98°F | Sunny | 1 to 6 mph W | 0% |
| Friday Night | 66°F | Clear | 0 to 5 mph E | 0% |
| Saturday | 98°F | Sunny | 1 to 6 mph W | 0% |
| Saturday Night | 67°F | Mostly Clear | 5 mph SE | 0% |
| Sunday | 95°F | Sunny | 2 to 6 mph W | 0% |
| Sunday Night | 65°F | Mostly Clear | 1 to 6 mph SE | 0% |
| Monday | 91°F | Sunny | 1 to 6 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Round Mountain (40.797, -121.938). Updated through the day.
Growing snapshot for Round Mountain
Last spring frost
Jun 3
First fall frost
Sep 14
Growing season
102 days
Hardiness zone
9a
More local growing data for Round Mountain: nearby ZIP 96084 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Burney, Ca (12.6 mi from Round Mountain). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.