Williams, CA Weather & Growing Conditions
This Afternoon
55°F
Light Rain Likely
Rain likely. Mostly cloudy, with a high near 55. North wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Light Rain Likely | 6 mph N | 63% |
| Tonight | 47°F | Chance Light Rain then Mostly Cloudy | 6 mph NNW | 25% |
| Wednesday | 67°F | Sunny | 2 to 7 mph NW | 0% |
| Wednesday Night | 48°F | Partly Cloudy | 2 mph W | 0% |
| Thursday | 71°F | Sunny | 2 to 8 mph NNW | 0% |
| Thursday Night | 50°F | Mostly Clear | 3 mph WNW | 0% |
| Friday | 72°F | Sunny | 0 to 3 mph NNW | 0% |
| Friday Night | 50°F | Mostly Clear | 0 mph | 0% |
| Saturday | 71°F | Sunny | 0 to 3 mph NE | 0% |
| Saturday Night | 50°F | Mostly Clear | 2 mph N | 0% |
| Sunday | 71°F | Mostly Sunny | 3 mph NNE | 0% |
| Sunday Night | 50°F | Partly Cloudy | 2 mph N | 0% |
| Monday | 69°F | Mostly Sunny | 2 mph NNE | 2% |
| Monday Night | 50°F | Partly Cloudy | 2 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Williams, CA
Last spring frost
Feb 14
First fall frost
Dec 1
Growing season
293 days
Hardiness zone
9b
Explore more for Williams, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Colusa 2 Ssw, Ca (13.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.