Junction City, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Junction City, a community in Trinity County, California.
This Afternoon
48°F
Light Rain Likely
Rain likely before 4pm. Cloudy, with a high near 48. Southeast wind 9 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Junction City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Light Rain Likely | 9 to 13 mph SE | 71% |
| Tonight | 35°F | Mostly Cloudy then Patchy Frost | 5 to 9 mph SSE | 8% |
| Wednesday | 56°F | Patchy Frost then Partly Sunny | 2 to 10 mph S | 3% |
| Wednesday Night | 38°F | Partly Cloudy | 5 to 10 mph WNW | 3% |
| Thursday | 61°F | Sunny | 5 mph WNW | 0% |
| Thursday Night | 39°F | Partly Cloudy | 5 mph NW | 0% |
| Friday | 65°F | Mostly Sunny | 3 mph NW | 0% |
| Friday Night | 43°F | Mostly Clear | 3 mph NNW | 0% |
| Saturday | 68°F | Sunny | 0 to 3 mph ENE | 0% |
| Saturday Night | 41°F | Partly Cloudy | 0 to 3 mph ENE | 3% |
| Sunday | 63°F | Mostly Sunny | 2 mph WSW | 3% |
| Sunday Night | 41°F | Mostly Cloudy | 2 mph NW | 3% |
| Monday | 60°F | Partly Sunny | 2 mph SSE | 8% |
| Monday Night | 39°F | Partly Cloudy then Slight Chance Light Rain | 3 mph SE | 21% |
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 Nov 3, 2026.