Casey, IL Weather & Growing Conditions
Overnight
69°F
Mostly Cloudy
Mostly cloudy, with a low around 69. Southeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Mostly Cloudy | 6 mph SE | 12% |
| Saturday | 93°F | Chance Showers And Thunderstorms | 8 mph SW | 38% |
| Saturday Night | 70°F | Mostly Cloudy | 3 to 7 mph S | 9% |
| Sunday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph NNW | 31% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 10 to 14 mph NE | 60% |
| Monday | 73°F | Showers And Thunderstorms Likely | 14 mph NE | 69% |
| Monday Night | 56°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 12 to 16 mph NE | 53% |
| Tuesday | 70°F | Slight Chance Showers And Thunderstorms | 14 mph NNE | 22% |
| Tuesday Night | 54°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 8 to 15 mph NNE | 22% |
| Wednesday | 72°F | Mostly Sunny | 12 mph N | 6% |
| Wednesday Night | 54°F | Partly Cloudy | 6 to 12 mph N | 4% |
| Thursday | 73°F | Mostly Sunny | 10 mph N | 2% |
| Thursday Night | 56°F | Partly Cloudy | 5 to 9 mph NNE | 4% |
| Friday | 75°F | Mostly Sunny | 7 to 10 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Casey, IL
Last spring frost
Apr 14
First fall frost
Oct 20
Growing season
187 days
Hardiness zone
6b
Explore more for Casey, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Casey, Il (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.