Fairfield, CA Weather & Growing Conditions
Today
91°F
Sunny
Sunny. High near 91, with temperatures falling to around 89 in the afternoon. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 10 to 14 mph SW | 0% |
| Tonight | 60°F | Clear | 12 to 15 mph WSW | 0% |
| Wednesday | 90°F | Sunny | 10 to 14 mph WSW | 0% |
| Wednesday Night | 59°F | Clear | 10 to 15 mph WSW | 0% |
| Thursday | 91°F | Sunny | 8 to 14 mph WSW | 0% |
| Thursday Night | 60°F | Clear | 10 to 14 mph WSW | 0% |
| Friday | 93°F | Sunny | 7 to 14 mph WSW | 0% |
| Friday Night | 62°F | Clear | 10 to 14 mph WSW | 0% |
| Saturday | 94°F | Sunny | 6 to 13 mph WSW | 0% |
| Saturday Night | 63°F | Clear | 9 to 13 mph WSW | 0% |
| Sunday | 90°F | Sunny | 9 to 15 mph WSW | 0% |
| Sunday Night | 59°F | Mostly Clear | 15 mph WSW | 0% |
| Monday | 84°F | Sunny | 15 mph WSW | 0% |
| Monday Night | 57°F | Mostly Clear | 12 to 16 mph WSW | 0% |
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 (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.