Riley, IL Weather Forecast
Local 7-day forecast
Patchy Smoke
Track current conditions, temperature changes, wind, and the full daily outlook for Riley, IL in one place.
Areas of smoke before 1pm, then patchy smoke and scattered showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 96. West southwest wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
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: Jul 17, 2026 2:38 PM CDT.
The active forecast window currently covers Jul 17 to Jul 23, 2026 for Riley, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 2:38 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Riley
This Afternoon looks like the warmest upcoming period in Riley at 90 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Monday at about 5 to 15 mph SSW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 2:38 PM CDT
- Coverage
- 7 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
Isolated showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Heat index values as high as 96. Southwest wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Sunny, with a high near 89. Heat index values as high as 97. West northwest wind around 10 mph, with gusts as high as 20 mph.
Partly cloudy, with a low around 63. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 84. East northeast wind 0 to 5 mph.
Partly cloudy, with a low around 64.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 84.
Mostly clear, with a low around 59.
Sunny, with a high near 79.
Mostly clear, with a low around 57.
Sunny, with a high near 80.
Partly cloudy, with a low around 59.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jul 17
|
Patchy Smoke
|
90°F |
5 mph
WSW
|
|
Tonight
Jul 17
|
Isolated Showers And Thunderstorms then Partly Cloudy
|
72°F |
5 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
89°F |
10 mph
WNW
|
|
Saturday Night
Jul 18
|
Partly Cloudy
|
63°F |
5 to 10 mph
NNE
|
|
Sunday
Jul 19
|
Sunny
|
84°F |
0 to 5 mph
ENE
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
64°F |
0 to 5 mph
SE
|
|
Monday
Jul 20
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
87°F |
5 to 15 mph
SSW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
70°F |
10 to 15 mph
WSW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Mostly Sunny
|
84°F |
10 to 15 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
59°F |
5 to 15 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
79°F |
5 to 10 mph
NNW
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
57°F |
0 to 10 mph
NW
|
|
Thursday
Jul 23
|
Sunny
|
80°F |
0 to 5 mph
W
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
59°F |
0 to 5 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Riley.