Junction City, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Junction City, a community in Trinity County, California.
Tonight
53°F
Clear
Clear, with a low around 53. West wind 1 to 13 mph.
7-day forecast for Junction City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Clear | 1 to 13 mph W | 0% |
| Saturday | 84°F | Sunny | 0 to 7 mph ESE | 0% |
| Saturday Night | 55°F | Partly Cloudy | 1 to 7 mph NW | 0% |
| Sunday | 85°F | Mostly Sunny | 3 mph E | 0% |
| Sunday Night | 56°F | Partly Cloudy | 3 mph NNW | 0% |
| Monday | 86°F | Sunny | 1 to 8 mph WNW | 0% |
| Monday Night | 55°F | Mostly Clear | 2 to 8 mph NW | 0% |
| Tuesday | 85°F | Sunny | 2 to 10 mph WNW | 0% |
| Tuesday Night | 54°F | Mostly Clear | 2 to 10 mph NW | 0% |
| Wednesday | 86°F | Sunny | 2 to 6 mph NW | 0% |
| Wednesday Night | 56°F | Mostly Clear | 6 mph NW | 0% |
| Thursday | 85°F | Sunny | 3 to 9 mph SE | 0% |
| Thursday Night | 54°F | Partly Cloudy | 5 to 9 mph W | 0% |
| Friday | 78°F | Sunny | 3 to 9 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Junction City (40.736, -123.085). Updated through the day.
Growing snapshot for Junction City
Last spring frost
May 3
First fall frost
Oct 11
Growing season
159 days
Hardiness zone
8b
More local growing data for Junction City: nearby ZIP 96048 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Burnt Ranch
Coffee Creek
Douglas City
Hayfork
Hyampom
Lewiston
Mad River
Platina
Post Mountain
Ruth
Salyer
Trinity Center
Trinity Village
Weaverville
Climate data from the nearest NOAA station, Weaverville, Ca (7.8 mi from Junction City). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.