Grimes, CA Weather & Growing Conditions
Today
68°F
Sunny
Sunny. High near 68, with temperatures falling to around 65 in the afternoon. Northwest wind 2 to 12 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Sunny | 2 to 12 mph NW | 2% |
| Tonight | 46°F | Patchy Fog | 0 to 5 mph NW | 2% |
| Thursday | 72°F | Sunny | 5 to 10 mph NNW | 0% |
| Thursday Night | 44°F | Mostly Clear | 5 mph NW | 0% |
| Friday | 71°F | Sunny | 1 to 5 mph NNW | 0% |
| Friday Night | 45°F | Mostly Clear | 1 mph NNE | 0% |
| Saturday | 72°F | Sunny | 2 mph NNW | 0% |
| Saturday Night | 45°F | Mostly Clear | 2 mph NNW | 0% |
| Sunday | 72°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Sunday Night | 47°F | Partly Cloudy | 1 mph NNW | 0% |
| Monday | 70°F | Mostly Sunny | 3 mph NNW | 1% |
| Monday Night | 46°F | Partly Cloudy | 2 mph N | 1% |
| Tuesday | 71°F | Sunny | 3 mph N | 7% |
| Tuesday Night | 47°F | Mostly Clear | 2 mph SSE | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grimes, CA
Last spring frost
Feb 14
First fall frost
Dec 1
Growing season
293 days
Hardiness zone
9b
Explore more for Grimes, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Colusa 2 Ssw, Ca (11.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.