Junction City, CA Weather & Growing Conditions
Overnight
37°F
Partly Cloudy
Partly cloudy, with a low around 37. Northeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 37°F | Partly Cloudy | 2 mph NE | 0% |
| Wednesday | 53°F | Mostly Sunny | 5 mph WNW | 3% |
| Wednesday Night | 38°F | Partly Cloudy | 2 mph N | 3% |
| Thursday | 58°F | Sunny | 3 mph NW | 0% |
| Thursday Night | 45°F | Mostly Clear | 5 mph NNW | 0% |
| Friday | 64°F | Mostly Sunny | 3 mph W | 0% |
| Friday Night | 49°F | Mostly Clear | 3 mph N | 0% |
| Saturday | 65°F | Sunny | 5 mph E | 0% |
| Saturday Night | 45°F | Partly Cloudy | 3 mph WNW | 2% |
| Sunday | 59°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Sunday Night | 45°F | Mostly Cloudy | 3 mph N | 0% |
| Monday | 57°F | Partly Sunny | 3 mph SSW | 6% |
| Monday Night | 43°F | Partly Cloudy | 3 mph NNW | 6% |
| Tuesday | 57°F | Slight Chance Light Rain | 1 to 5 mph E | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Junction City, CA
Last spring frost
May 3
First fall frost
Oct 11
Growing season
159 days
Hardiness zone
8b
Explore more for Junction City, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Weaverville, Ca (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.