Riley, IL Weather Forecast
Local 7-day forecast
Rain Showers Likely then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Riley, IL in one place.
Rain showers likely before 9am. Mostly sunny, with a high near 50. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Riley, 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: Apr 16, 2026 5:19 AM CDT.
The active forecast window currently covers Apr 18 to Apr 22, 2026 for Riley, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 5:19 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Riley
Tuesday looks like the warmest upcoming period in Riley at 71 degrees F.
Sunday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Saturday at about 15 to 20 mph WNW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Apr 16, 2026 5:19 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 32.
Mostly sunny, with a high near 50.
Areas of frost after 1am. Partly cloudy, with a low around 31.
Areas of frost before 9am. Sunny, with a high near 59.
Partly cloudy, with a low around 46.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 49.
Sunny, with a high near 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Rain Showers Likely then Mostly Sunny
|
50°F |
15 to 20 mph
WNW
|
|
Saturday Night
Apr 18
|
Mostly Clear
|
32°F |
10 to 20 mph
WNW
|
|
Sunday
Apr 19
|
Mostly Sunny
|
50°F |
10 to 20 mph
WNW
|
|
Sunday Night
Apr 19
|
Partly Cloudy then Areas Of Frost
|
31°F |
5 to 15 mph
WNW
|
|
Monday
Apr 20
|
Areas Of Frost then Sunny
|
59°F |
5 to 15 mph
SE
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
46°F |
10 to 15 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
71°F |
15 to 20 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
49°F |
10 to 15 mph
WSW
|
|
Wednesday
Apr 22
|
Sunny
|
68°F |
10 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Riley.