Harman US

Round Mountain, CA Weather & Growing Conditions

Tonight
52°F
Clear
Clear. Low around 52, with temperatures rising to around 54 overnight. East wind 6 to 9 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 52°F Clear 6 to 9 mph E 0%
Saturday 77°F Sunny 2 to 10 mph NE 0%
Saturday Night 55°F Partly Cloudy 2 to 7 mph NE 0%
Sunday 77°F Mostly Sunny 2 to 8 mph N 0%
Sunday Night 56°F Partly Cloudy 1 to 5 mph SSE 0%
Monday 79°F Mostly Sunny 3 to 7 mph NNW 0%
Monday Night 57°F Mostly Clear 3 mph E 0%
Tuesday 78°F Sunny 5 mph W 0%
Tuesday Night 56°F Mostly Clear 1 to 5 mph E 0%
Wednesday 78°F Sunny 2 to 6 mph W 0%
Wednesday Night 57°F Mostly Clear 5 mph SE 0%
Thursday 78°F Sunny 3 to 8 mph S 0%
Thursday Night 58°F Partly Cloudy 7 mph SSE 0%
Friday 73°F Sunny 5 to 8 mph SSW 1%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Round Mountain, CA

Last spring frost
Jun 3
First fall frost
Sep 14
Growing season
102 days
Hardiness zone
9a

Explore more for Round Mountain, CA: full frost dates · planting calendar · California frost dates

Climate data from the nearest NOAA station, Burney, Ca (12.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.