Harman US

Round Mountain, CA Weather & Growing Conditions

Today
77°F
Sunny
Sunny, with a high near 77. North wind 3 to 10 mph.

7-day forecast

WhenTempForecastWindPrecip
Today 77°F Sunny 3 to 10 mph N 0%
Tonight 55°F Partly Cloudy 1 to 7 mph ESE 0%
Sunday 77°F Partly Sunny 2 to 7 mph W 0%
Sunday Night 56°F Partly Cloudy 1 to 5 mph SE 0%
Monday 79°F Sunny 3 to 7 mph N 0%
Monday Night 56°F Mostly Clear 3 mph SE 0%
Tuesday 77°F Sunny 6 mph NW 0%
Tuesday Night 56°F Mostly Clear 1 to 5 mph ESE 0%
Wednesday 76°F Sunny 6 mph WSW 0%
Wednesday Night 56°F Mostly Clear 5 mph ESE 0%
Thursday 76°F Sunny 3 to 7 mph SW 1%
Thursday Night 56°F Partly Cloudy 3 to 7 mph SSE 1%
Friday 72°F Mostly Sunny 3 to 8 mph SW 1%
Friday Night 53°F Partly Cloudy 3 to 7 mph SE 4%

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.