Suisun City, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Suisun City, a city in Solano County, California.
Tonight
49°F
Mostly Clear
Mostly clear. Low around 49, with temperatures rising to around 51 overnight. North wind around 10 mph, with gusts as high as 21 mph.
7-day forecast for Suisun City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear | 10 mph N | 0% |
| Wednesday | 70°F | Sunny | 7 mph NW | 2% |
| Wednesday Night | 48°F | Mostly Cloudy | 1 to 5 mph W | 2% |
| Thursday | 73°F | Patchy Fog then Mostly Sunny | 1 to 5 mph NW | 0% |
| Thursday Night | 48°F | Mostly Clear | 0 to 3 mph WNW | 0% |
| Friday | 72°F | Sunny | 0 to 3 mph NE | 0% |
| Friday Night | 48°F | Mostly Clear | 2 mph W | 0% |
| Saturday | 72°F | Sunny | 0 to 7 mph NE | 0% |
| Saturday Night | 50°F | Mostly Clear | 2 mph NE | 0% |
| Sunday | 73°F | Sunny | 0 to 3 mph NNE | 0% |
| Sunday Night | 50°F | Partly Cloudy | 2 mph WNW | 0% |
| Monday | 72°F | Mostly Sunny | 0 to 3 mph WSW | 1% |
| Monday Night | 50°F | Partly Cloudy | 0 to 3 mph NW | 2% |
| Tuesday | 72°F | Sunny | 0 to 3 mph NW | 5% |
Forecast source: National Weather Service (api.weather.gov) for Suisun City (38.248, -122.010). Updated through the day.
Growing snapshot for Suisun City
Last spring frost
Jan 15
First fall frost
Dec 14
Growing season
336 days
Hardiness zone
9b
More local growing data for Suisun City: nearby ZIP 94533 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Fairfield, Ca (3.4 mi from Suisun City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.