Hamilton City, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton City, a community in Glenn County, California.
Overnight
74°F
Clear
Clear. Low around 74, with temperatures rising to around 76 overnight. North northeast wind around 2 mph.
7-day forecast for Hamilton City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 74°F | Clear | 2 mph NNE | 0% |
| Tuesday | 101°F | Sunny | 2 to 8 mph SE | 0% |
| Tuesday Night | 66°F | Mostly Clear | 2 to 7 mph SE | 0% |
| Wednesday | 99°F | Sunny | 2 to 8 mph SSE | 0% |
| Wednesday Night | 66°F | Clear | 2 to 8 mph SE | 0% |
| Thursday | 98°F | Sunny | 2 to 9 mph ESE | 0% |
| Thursday Night | 66°F | Clear | 2 to 9 mph ESE | 0% |
| Friday | 99°F | Sunny | 2 to 7 mph WSW | 0% |
| Friday Night | 67°F | Clear | 2 to 7 mph SE | 0% |
| Saturday | 99°F | Sunny | 2 to 7 mph W | 0% |
| Saturday Night | 68°F | Clear | 1 to 7 mph ESE | 0% |
| Sunday | 97°F | Sunny | 2 to 9 mph SSW | 0% |
| Sunday Night | 65°F | Clear | 3 to 9 mph SE | 0% |
| Monday | 93°F | Sunny | 3 to 10 mph SE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Hamilton City (39.743, -122.011). Updated through the day.
Growing snapshot for Hamilton City
Last spring frost
Mar 4
First fall frost
Nov 17
Growing season
257 days
Hardiness zone
9b
More local growing data for Hamilton City: nearby ZIP 95951 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chico Univ Farm, Ca (10 mi from Hamilton City). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.