Hamilton City, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton City, a community in Glenn County, California.
This Afternoon
88°F
Sunny
Sunny, with a high near 88. Northwest wind around 8 mph.
7-day forecast for Hamilton City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 88°F | Sunny | 8 mph NW | 0% |
| Tonight | 57°F | Clear | 1 to 5 mph NW | 0% |
| Saturday | 93°F | Sunny | 2 to 6 mph NW | 0% |
| Saturday Night | 59°F | Partly Cloudy | 3 mph NE | 0% |
| Sunday | 88°F | Mostly Sunny | 1 to 7 mph SSE | 0% |
| Sunday Night | 59°F | Mostly Cloudy | 1 to 7 mph ESE | 0% |
| Monday | 90°F | Mostly Sunny | 2 to 6 mph ESE | 0% |
| Monday Night | 59°F | Mostly Clear | 1 to 6 mph E | 0% |
| Tuesday | 91°F | Sunny | 2 to 6 mph SSE | 0% |
| Tuesday Night | 60°F | Mostly Clear | 1 to 6 mph E | 0% |
| Wednesday | 93°F | Sunny | 1 to 6 mph NW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 1 to 6 mph E | 0% |
| Thursday | 94°F | Sunny | 2 to 8 mph NW | 0% |
| Thursday Night | 61°F | Mostly Clear | 2 to 8 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 Sep 19, 2026.