Grenada, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grenada, a community in Siskiyou County, California.
This Afternoon
54°F
Partly Sunny
Partly sunny. High near 54, with temperatures falling to around 50 in the afternoon. South wind around 6 mph.
7-day forecast for Grenada
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 54°F | Partly Sunny | 6 mph S | 2% |
| Tonight | 32°F | Mostly Clear | 1 to 5 mph WSW | 1% |
| Wednesday | 56°F | Partly Sunny | 2 mph NNE | 7% |
| Wednesday Night | 36°F | Slight Chance Light Rain then Mostly Cloudy | 1 to 5 mph WSW | 18% |
| Thursday | 58°F | Sunny | 2 mph NW | 0% |
| Thursday Night | 35°F | Partly Cloudy | 2 mph S | 0% |
| Friday | 64°F | Mostly Sunny | 2 mph N | 0% |
| Friday Night | 38°F | Mostly Clear | 2 mph SSE | 0% |
| Saturday | 70°F | Sunny | 2 mph ENE | 0% |
| Saturday Night | 39°F | Partly Cloudy | 0 to 18 mph SSW | 1% |
| Sunday | 63°F | Partly Sunny | 0 to 7 mph WSW | 1% |
| Sunday Night | 38°F | Mostly Cloudy | 0 to 5 mph S | 3% |
| Monday | 62°F | Partly Sunny | 1 to 5 mph SSE | 6% |
| Monday Night | 37°F | Partly Cloudy | 1 to 5 mph S | 9% |
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 Nov 4, 2026.