Isleton, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Isleton, a city in Sacramento County, California.
This Afternoon
85°F
Sunny
Sunny, with a high near 85. West northwest wind around 8 mph.
7-day forecast for Isleton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Sunny | 8 mph WNW | 0% |
| Tonight | 56°F | Clear | 5 to 9 mph WSW | 0% |
| Saturday | 89°F | Sunny | 5 to 8 mph W | 0% |
| Saturday Night | 57°F | Partly Cloudy | 5 to 8 mph WSW | 0% |
| Sunday | 82°F | Partly Sunny | 6 to 9 mph WSW | 0% |
| Sunday Night | 56°F | Mostly Cloudy | 9 mph WSW | 0% |
| Monday | 85°F | Sunny | 10 mph W | 0% |
| Monday Night | 56°F | Mostly Clear | 6 to 10 mph WSW | 0% |
| Tuesday | 87°F | Sunny | 8 mph W | 0% |
| Tuesday Night | 58°F | Clear | 2 to 8 mph WSW | 0% |
| Wednesday | 94°F | Sunny | 3 mph WNW | 0% |
| Wednesday Night | 62°F | Mostly Clear | 3 mph W | 0% |
| Thursday | 96°F | Sunny | 2 to 7 mph W | 0% |
| Thursday Night | 62°F | Mostly Clear | 7 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Isleton (38.161, -121.605). Updated through the day.
Growing snapshot for Isleton
Last spring frost
Jan 12
First fall frost
Dec 19
Growing season
343 days
Hardiness zone
9b
More local growing data for Isleton: nearby ZIP 95641 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Antioch Pumping Plt #3, Ca (14.4 mi from Isleton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.