Jerseyville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jerseyville, a city in Jersey County, Illinois.
Overnight
72°F
Mostly Clear
Mostly clear, with a low around 72. South wind around 5 mph.
7-day forecast for Jerseyville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Mostly Clear | 5 mph S | 4% |
| Saturday | 95°F | Partly Sunny | 5 to 8 mph SW | 7% |
| Saturday Night | 71°F | Partly Cloudy | 5 mph SW | 5% |
| Sunday | 89°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 8 mph NW | 42% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 71% |
| Monday | 75°F | Showers And Thunderstorms Likely | 8 to 14 mph NE | 71% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 8 to 14 mph NE | 32% |
| Tuesday | 69°F | Slight Chance Rain Showers then Partly Sunny | 14 mph NE | 20% |
| 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% |
Forecast source: National Weather Service (api.weather.gov) for Jerseyville (39.117, -90.327). Updated through the day.
Growing snapshot for Jerseyville
Last spring frost
Apr 14
First fall frost
Oct 19
Growing season
187 days
Hardiness zone
6b
More local growing data for Jerseyville: nearby ZIP 62052 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jerseyville 2 Sw, Il (1.5 mi from Jerseyville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.