Casey, IL Weather & Growing Conditions
Today
84°F
Sunny
Sunny, with a high near 84. South southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 3 mph SSE | 0% |
| Tonight | 64°F | Mostly Clear | 3 mph SE | 0% |
| Wednesday | 86°F | Sunny | 1 to 5 mph S | 0% |
| Wednesday Night | 67°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 mph S | 30% |
| Thursday | 83°F | Showers And Thunderstorms Likely | 3 to 8 mph SSW | 58% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SSW | 41% |
| Friday | 83°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 6 mph SSW | 25% |
| Friday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 21% |
| Saturday | 85°F | Slight Chance Showers And Thunderstorms | 6 mph SSW | 19% |
| Saturday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SSW | 17% |
| Sunday | 87°F | Sunny | 7 to 12 mph SSW | 9% |
| Sunday Night | 71°F | Mostly Clear | 9 mph SSW | 9% |
| Monday | 88°F | Mostly Sunny | 8 to 12 mph SW | 12% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 9 mph SSW | 25% |
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 Aug 4, 2026.