Junction City, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Junction City, a community in Trinity County, California.
Today
99°F
Sunny
Sunny, with a high near 99. East southeast wind 5 to 14 mph, with gusts as high as 20 mph.
7-day forecast for Junction City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 5 to 14 mph ESE | 0% |
| Tonight | 67°F | Mostly Clear | 1 to 14 mph SW | 0% |
| Wednesday | 97°F | Sunny | 3 to 10 mph SE | 0% |
| Wednesday Night | 66°F | Clear | 2 to 8 mph NNE | 0% |
| Thursday | 97°F | Sunny | 3 to 8 mph ESE | 0% |
| Thursday Night | 64°F | Clear | 1 to 8 mph NW | 0% |
| Friday | 97°F | Sunny | 1 to 9 mph ESE | 0% |
| Friday Night | 65°F | Clear | 2 to 9 mph NW | 0% |
| Saturday | 95°F | Sunny | 2 to 15 mph W | 0% |
| Saturday Night | 63°F | Clear | 3 to 15 mph NW | 0% |
| Sunday | 91°F | Sunny | 2 to 13 mph WNW | 0% |
| Sunday Night | 61°F | Mostly Clear | 2 to 13 mph NNW | 0% |
| Monday | 89°F | Sunny | 2 to 9 mph SE | 0% |
| Monday Night | 59°F | Clear | 2 to 9 mph NW | 0% |
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 Aug 4, 2026.