Cromberg, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Cromberg, a community in Plumas County, California.

Today

93°F

Patchy Smoke then Sunny

Patchy smoke before 9am, then haze and patchy smoke between 9am and noon. Sunny, with a high near 93. Southwest wind around 5 mph.

7-day forecast for Cromberg

When	Temp	Forecast	Wind	Precip
Today	93°F	Patchy Smoke then Sunny	5 mph SW	0%
Tonight	57°F	Mostly Clear	0 to 5 mph N	0%
Wednesday	91°F	Sunny	0 to 5 mph SE	0%
Wednesday Night	57°F	Clear	0 to 5 mph S	0%
Thursday	92°F	Sunny	0 to 5 mph SW	0%
Thursday Night	58°F	Clear	0 to 5 mph S	0%
Friday	93°F	Sunny	0 to 10 mph SW	0%
Friday Night	59°F	Mostly Clear	0 to 10 mph S	0%
Saturday	92°F	Sunny	0 to 10 mph S	0%
Saturday Night	58°F	Clear	0 to 10 mph S	0%
Sunday	89°F	Sunny	0 to 10 mph S	0%
Sunday Night	56°F	Clear	5 to 10 mph S	0%
Monday	86°F	Sunny	5 to 10 mph S	0%
Monday Night	52°F	Mostly Clear	5 to 10 mph S	0%

Forecast source: National Weather Service (api.weather.gov) for Cromberg (39.868, -120.690). Updated through the day.

Growing snapshot for Cromberg

Last spring frost

Jun 11

First fall frost

Sep 10

Growing season

91 days

Hardiness zone

More local growing data for Cromberg: nearby ZIP 96103 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Portola, Ca (10.7 mi from Cromberg). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.