Clarion, IL Weather Forecast
Local 7-day forecast
Patchy Fog then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Clarion, IL in one place.
Patchy fog and a slight chance of showers and thunderstorms before 7am, then patchy fog and a chance of showers and thunderstorms between 7am and 9am, then showers and thunderstorms likely between 9am and noon, then a chance of showers and thunderstorms between noon and 5pm. Partly sunny, with a high near 84. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Clarion, 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: Aug 10, 2026 4:44 AM CDT.
The active forecast window currently covers Aug 11 to Aug 16, 2026 for Clarion, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 11 to Aug 16, 2026
- Latest sync
- Aug 10, 2026 4:44 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Clarion
Tuesday looks like the warmest upcoming period in Clarion at 84 degrees F.
Friday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Thursday Night at about 5 to 10 mph NE.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 10, 2026 4:44 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 69. Chance of precipitation is 60%.
A chance of rain showers before 10am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Aug 11
|
Patchy Fog then Chance Showers And Thunderstorms
|
84°F |
5 mph
S
|
|
Tuesday Night
Aug 11
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
69°F |
5 mph
E
|
|
Wednesday
Aug 12
|
Chance Showers And Thunderstorms
|
84°F |
5 mph
E
|
|
Wednesday Night
Aug 12
|
Chance Showers And Thunderstorms
|
68°F |
0 to 5 mph
NE
|
|
Thursday
Aug 13
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
78°F |
5 mph
E
|
|
Thursday Night
Aug 13
|
Showers And Thunderstorms Likely
|
64°F |
5 to 10 mph
NE
|
|
Friday
Aug 14
|
Chance Showers And Thunderstorms
|
77°F |
10 mph
E
|
|
Friday Night
Aug 14
|
Slight Chance Showers And Thunderstorms
|
63°F |
10 mph
E
|
|
Saturday
Aug 15
|
Chance Showers And Thunderstorms
|
79°F |
10 mph
S
|
|
Saturday Night
Aug 15
|
Chance Showers And Thunderstorms
|
66°F |
5 to 10 mph
S
|
|
Sunday
Aug 16
|
Chance Showers And Thunderstorms
|
79°F |
5 to 10 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Clarion.