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Grenada, CA Weather & Growing Conditions

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

Tonight
49°F
Clear
Clear. Low around 49, with temperatures rising to around 51 overnight. Northwest wind 0 to 12 mph, with gusts as high as 18 mph.

7-day forecast for Grenada

WhenTempForecastWindPrecip
Tonight 49°F Clear 0 to 12 mph NW 0%
Saturday 84°F Sunny 0 to 3 mph N 0%
Saturday Night 51°F Partly Cloudy 1 to 8 mph NW 0%
Sunday 86°F Mostly Sunny 2 to 6 mph N 0%
Sunday Night 54°F Mostly Clear 1 to 6 mph W 0%
Monday 87°F Sunny 0 to 7 mph N 0%
Monday Night 53°F Mostly Clear 1 to 7 mph NNW 0%
Tuesday 85°F Sunny 0 to 8 mph WNW 0%
Tuesday Night 50°F Mostly Clear 1 to 8 mph E 0%
Wednesday 85°F Sunny 0 to 3 mph N 1%
Wednesday Night 52°F Mostly Clear 3 mph N 1%
Thursday 88°F Sunny 1 to 8 mph NE 1%
Thursday Night 52°F Partly Cloudy 3 to 8 mph SW 1%
Friday 81°F Sunny 2 to 9 mph NNW 3%

Forecast source: National Weather Service (api.weather.gov) for Grenada (41.640, -122.527). Updated through the day.

Growing snapshot for Grenada

Last spring frost
Apr 30
First fall frost
Oct 18
Growing season
169 days
Hardiness zone
8a

More local growing data for Grenada: nearby ZIP 96038 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Yreka, Ca (8.3 mi from Grenada). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.