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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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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Weed
Yreka
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.