Casey, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Casey, IL in one place.
Showers and thunderstorms. Mostly cloudy, with a high near 78. South wind around 12 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Casey, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 4:04 PM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Casey, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 4:04 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Casey
This Afternoon looks like the warmest upcoming period in Casey at 78 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Tonight at about 13 to 20 mph WSW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 4:04 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 9pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 49. West southwest wind 13 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
A slight chance of rain showers after 3pm. Mostly cloudy, with a high near 56. Northwest wind around 20 mph, with gusts as high as 31 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Partly cloudy, with a low around 39. North northwest wind 12 to 18 mph, with gusts as high as 28 mph. New rainfall amounts less than a tenth of an inch possible.
Sunny, with a high near 59. North northeast wind 3 to 10 mph, with gusts as high as 17 mph.
Areas of frost after 3am. Clear, with a low around 34. East southeast wind 0 to 3 mph.
Areas of frost before 8am. Sunny, with a high near 67. South southeast wind 3 to 8 mph.
Mostly clear, with a low around 38.
Sunny, with a high near 71.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 75.
Mostly clear, with a low around 46.
Sunny, with a high near 77.
Mostly clear, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Showers And Thunderstorms
|
78°F |
12 mph
S
|
|
Tonight
Oct 15
|
Showers And Thunderstorms Likely
|
49°F |
13 to 20 mph
WSW
|
|
Friday
Oct 16
|
Mostly Cloudy then Slight Chance Rain Showers
|
56°F |
20 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
39°F |
12 to 18 mph
NNW
|
|
Saturday
Oct 17
|
Sunny
|
59°F |
3 to 10 mph
NNE
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
34°F |
0 to 3 mph
ESE
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
67°F |
3 to 8 mph
SSE
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
38°F |
5 mph
SSE
|
|
Monday
Oct 19
|
Sunny
|
71°F |
6 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
3 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
75°F |
3 mph
ESE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
46°F |
2 mph
E
|
|
Wednesday
Oct 21
|
Sunny
|
77°F |
5 mph
E
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
47°F |
3 mph
ESE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Casey.
