Suisun City, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Suisun City, a city in Solano County, California.
This Afternoon
88°F
Sunny
Sunny. High near 88, with temperatures falling to around 85 in the afternoon. West southwest wind around 13 mph, with gusts as high as 20 mph.
7-day forecast for Suisun City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 88°F | Sunny | 13 mph WSW | 0% |
| Tonight | 58°F | Partly Cloudy | 8 to 12 mph SW | 0% |
| Sunday | 79°F | Partly Sunny | 7 to 10 mph SW | 0% |
| Sunday Night | 57°F | Mostly Cloudy | 12 mph WSW | 0% |
| Monday | 79°F | Mostly Sunny | 13 mph WSW | 0% |
| Monday Night | 57°F | Mostly Clear | 9 to 14 mph WSW | 0% |
| Tuesday | 81°F | Sunny | 7 to 12 mph WSW | 0% |
| Tuesday Night | 57°F | Mostly Clear | 3 to 12 mph WSW | 0% |
| Wednesday | 91°F | Sunny | 1 to 6 mph W | 0% |
| Wednesday Night | 61°F | Mostly Clear | 1 to 6 mph WSW | 0% |
| Thursday | 94°F | Sunny | 0 to 8 mph WNW | 0% |
| Thursday Night | 61°F | Mostly Clear | 8 mph WSW | 0% |
| Friday | 87°F | Sunny | 8 to 12 mph WSW | 0% |
| Friday Night | 60°F | Mostly Clear | 12 mph WSW | 0% |
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 Sep 20, 2026.