Harman US

Iron Horse, CA Weather & Growing Conditions

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

Overnight
28°F
Partly Cloudy
Partly cloudy, with a low around 28. Southeast wind around 0 mph.

7-day forecast for Iron Horse

WhenTempForecastWindPrecip
Overnight 28°F Partly Cloudy 0 mph 2%
Wednesday 57°F Sunny 0 mph 1%
Wednesday Night 29°F Partly Cloudy 0 mph 1%
Thursday 60°F Sunny 0 to 5 mph E 0%
Thursday Night 27°F Mostly Clear 0 to 5 mph E 0%
Friday 63°F Sunny 0 to 5 mph E 0%
Friday Night 31°F Mostly Clear 5 mph E 0%
Saturday 66°F Sunny 0 to 5 mph SE 0%
Saturday Night 32°F Partly Cloudy 0 mph 0%
Sunday 66°F Mostly Sunny 0 to 5 mph S 0%
Sunday Night 34°F Partly Cloudy 0 mph 0%
Monday 63°F Mostly Sunny 0 to 5 mph SW 1%
Monday Night 32°F Partly Cloudy 0 to 5 mph SW 1%
Tuesday 63°F Mostly Sunny then Slight Chance Light Rain 0 to 5 mph S 15%

Forecast source: National Weather Service (api.weather.gov) for Iron Horse (39.780, -120.482). Updated through the day.

Growing snapshot for Iron Horse

Last spring frost
Jun 11
First fall frost
Sep 10
Growing season
91 days
Hardiness zone
6b

More local growing data for Iron Horse: nearby ZIP 96122 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Portola, Ca (1.1 mi from Iron Horse). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.