Grimes, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grimes, a community in Colusa County, California.
Today
92°F
Sunny
Sunny, with a high near 92. North wind around 3 mph.
7-day forecast for Grimes
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny | 3 mph N | 0% |
| Tonight | 57°F | Partly Cloudy | 3 mph SE | 0% |
| Sunday | 86°F | Partly Sunny | 1 to 5 mph SE | 0% |
| Sunday Night | 57°F | Mostly Cloudy | 1 to 5 mph SSE | 0% |
| Monday | 89°F | Mostly Sunny | 1 to 7 mph SSE | 0% |
| Monday Night | 56°F | Mostly Clear | 1 to 7 mph SE | 0% |
| Tuesday | 88°F | Sunny | 1 to 6 mph SE | 0% |
| Tuesday Night | 57°F | Clear | 1 to 6 mph ESE | 0% |
| Wednesday | 91°F | Sunny | 3 mph NE | 0% |
| Wednesday Night | 59°F | Mostly Clear | 0 to 3 mph ENE | 0% |
| Thursday | 93°F | Sunny | 1 to 5 mph NNW | 0% |
| Thursday Night | 59°F | Mostly Clear | 1 to 5 mph SSE | 1% |
| Friday | 89°F | Sunny | 2 to 6 mph SSE | 1% |
| Friday Night | 57°F | Partly Cloudy | 2 to 6 mph SSE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Grimes (39.074, -121.899). Updated through the day.
Growing snapshot for Grimes
Last spring frost
Feb 14
First fall frost
Dec 1
Growing season
293 days
Hardiness zone
9b
More local growing data for Grimes: nearby ZIP 95950 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Colusa 2 Ssw, Ca (11.5 mi from Grimes). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.