Kaskaskia, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Kaskaskia, a village in Randolph County, Illinois.
Tonight
71°F
Mostly Clear
Mostly clear, with a low around 71. South wind around 3 mph.
7-day forecast for Kaskaskia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Mostly Clear | 3 mph S | 2% |
| Sunday | 96°F | Mostly Sunny | 6 mph W | 2% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph N | 42% |
| Monday | 86°F | Chance Showers And Thunderstorms | 3 to 8 mph NE | 63% |
| Monday Night | 60°F | Showers And Thunderstorms Likely | 5 to 9 mph N | 63% |
| Tuesday | 76°F | Chance Showers And Thunderstorms then Partly Sunny | 6 to 12 mph N | 35% |
| Tuesday Night | 54°F | Mostly Cloudy | 5 to 12 mph N | 1% |
| Wednesday | 76°F | Mostly Sunny | 6 to 9 mph N | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 2 to 8 mph N | 0% |
| Thursday | 78°F | Mostly Sunny | 2 to 7 mph N | 1% |
| Thursday Night | 56°F | Mostly Cloudy | 1 to 6 mph N | 1% |
| Friday | 81°F | Slight Chance Rain Showers | 2 to 7 mph N | 15% |
| Friday Night | 57°F | Slight Chance Rain Showers then Partly Cloudy | 1 to 6 mph NE | 15% |
| Saturday | 83°F | Mostly Sunny | 1 to 5 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Kaskaskia (37.921, -89.916). Updated through the day.
Growing snapshot for Kaskaskia
Last spring frost
Apr 8
First fall frost
Oct 30
Growing season
202 days
Hardiness zone
7a
More local growing data for Kaskaskia: nearby ZIP 62241 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Kaskaskia Rvr Navigation Lock, Il (3.5 mi from Kaskaskia). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.