Fairfield, CA Weather & Growing Conditions
Today
69°F
Sunny
Sunny. High near 69, with temperatures falling to around 66 in the afternoon. Northwest wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Sunny | 7 mph NW | 2% |
| Tonight | 49°F | Mostly Cloudy | 2 to 6 mph WSW | 2% |
| Thursday | 73°F | Mostly Sunny | 2 to 6 mph NW | 0% |
| Thursday Night | 48°F | Mostly Clear | 0 to 3 mph WNW | 0% |
| Friday | 72°F | Sunny | 0 to 3 mph NNE | 0% |
| Friday Night | 48°F | Mostly Clear | 0 mph | 0% |
| Saturday | 73°F | Sunny | 0 to 6 mph NE | 0% |
| Saturday Night | 49°F | Mostly Clear | 1 mph N | 0% |
| Sunday | 73°F | Sunny | 1 to 5 mph NW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 1 mph WNW | 0% |
| Monday | 72°F | Mostly Sunny | 1 to 5 mph W | 1% |
| Monday Night | 50°F | Partly Cloudy | 2 mph WSW | 2% |
| Tuesday | 72°F | Sunny | 0 to 3 mph NW | 5% |
| Tuesday Night | 51°F | Mostly Clear | 2 mph WSW | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairfield, CA
Last spring frost
Jan 15
First fall frost
Dec 14
Growing season
336 days
Hardiness zone
9b
Explore more for Fairfield, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Fairfield, Ca (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.