Round Mountain, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Round Mountain, a community in Shasta County, California.
This Afternoon
82°F
Sunny
Sunny, with a high near 82. North northeast wind around 3 mph.
7-day forecast for Round Mountain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Sunny | 3 mph NNE | 0% |
| Tonight | 55°F | Clear | 1 to 6 mph ENE | 0% |
| Saturday | 87°F | Sunny | 1 to 7 mph NNE | 0% |
| Saturday Night | 57°F | Partly Cloudy | 3 mph NE | 0% |
| Sunday | 86°F | Mostly Sunny | 1 to 5 mph N | 0% |
| Sunday Night | 58°F | Partly Cloudy | 0 to 3 mph E | 0% |
| Monday | 88°F | Mostly Sunny | 3 mph N | 0% |
| Monday Night | 59°F | Mostly Clear | 2 mph E | 0% |
| Tuesday | 88°F | Sunny | 3 mph W | 0% |
| Tuesday Night | 58°F | Mostly Clear | 0 to 3 mph ENE | 0% |
| Wednesday | 87°F | Sunny | 1 to 5 mph NNW | 0% |
| Wednesday Night | 59°F | Mostly Clear | 3 mph E | 0% |
| Thursday | 87°F | Sunny | 1 to 5 mph S | 0% |
| Thursday Night | 59°F | Partly Cloudy | 1 to 5 mph SE | 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 Sep 18, 2026.