Colusa, CA Weather & Growing Conditions
Overnight
69°F
Clear
Clear. Low around 69, with temperatures rising to around 71 overnight. Southeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Clear | 2 mph SE | 0% |
| Tuesday | 102°F | Sunny | 2 to 6 mph SE | 0% |
| Tuesday Night | 63°F | Mostly Clear | 2 to 7 mph SSE | 0% |
| Wednesday | 100°F | Sunny | 1 to 7 mph SE | 0% |
| Wednesday Night | 62°F | Clear | 2 to 7 mph SE | 0% |
| Thursday | 100°F | Sunny | 1 to 6 mph ESE | 0% |
| Thursday Night | 63°F | Clear | 6 mph SE | 0% |
| Friday | 100°F | Sunny | 1 to 5 mph E | 0% |
| Friday Night | 65°F | Clear | 6 mph SE | 0% |
| Saturday | 100°F | Sunny | 1 to 6 mph E | 0% |
| Saturday Night | 65°F | Clear | 2 to 6 mph ESE | 0% |
| Sunday | 99°F | Sunny | 2 to 7 mph E | 0% |
| Sunday Night | 61°F | Clear | 2 to 8 mph SE | 0% |
| Monday | 94°F | Sunny | 2 to 8 mph ESE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Colusa, CA
Last spring frost
Feb 14
First fall frost
Dec 1
Growing season
293 days
Hardiness zone
9b
Explore more for Colusa, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Colusa 2 Ssw, Ca (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.