Jerseyville, IL Weather & Growing Conditions
This Afternoon
95°F
Mostly Cloudy
Mostly cloudy, with a high near 95. Southwest wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 95°F | Mostly Cloudy | 5 to 8 mph SW | 6% |
| Tonight | 70°F | Partly Cloudy | 6 mph S | 2% |
| Sunday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph W | 30% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 70% |
| Monday | 76°F | Showers And Thunderstorms Likely | 9 mph NE | 70% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 43% |
| Tuesday | 69°F | Chance Rain Showers then Partly Sunny | 9 to 14 mph NE | 27% |
| Tuesday Night | 51°F | Mostly Cloudy | 6 to 13 mph N | 7% |
| Wednesday | 72°F | Mostly Sunny | 10 mph N | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 3 to 9 mph N | 0% |
| Thursday | 74°F | Mostly Sunny | 5 to 8 mph N | 2% |
| Thursday Night | 55°F | Partly Cloudy | 3 to 7 mph NE | 4% |
| Friday | 76°F | Mostly Sunny | 5 to 8 mph NE | 6% |
| Friday Night | 55°F | Partly Cloudy | 3 to 7 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Jerseyville, IL
Last spring frost
Apr 14
First fall frost
Oct 19
Growing season
187 days
Hardiness zone
6b
Explore more for Jerseyville, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Jerseyville 2 Sw, Il (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.