Clarksville, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Clarksville, IL in one place.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 90. Southeast wind 2 to 6 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Clarksville, 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: Sep 15, 2026 5:12 PM CDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Clarksville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 5:12 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Clarksville
Saturday looks like the warmest upcoming period in Clarksville at 92 degrees F.
Monday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Saturday at about 8 to 12 mph SSW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 5:12 PM CDT
- Coverage
- 6 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
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72. South wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 91. West wind around 7 mph.
Partly cloudy, with a low around 69. North northeast wind around 6 mph.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. East wind around 6 mph.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 68.
Mostly sunny, with a high near 92.
A chance of rain showers after 7pm. Partly cloudy, with a low around 70.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89.
A chance of showers and thunderstorms. Partly cloudy, with a low around 66.
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Chance Showers And Thunderstorms
|
90°F |
2 to 6 mph
SE
|
|
Wednesday Night
Sep 16
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
72°F |
5 mph
S
|
|
Thursday
Sep 17
|
Mostly Sunny
|
91°F |
7 mph
W
|
|
Thursday Night
Sep 17
|
Partly Cloudy
|
69°F |
6 mph
NNE
|
|
Friday
Sep 18
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
90°F |
6 mph
E
|
|
Friday Night
Sep 18
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
68°F |
8 mph
ESE
|
|
Saturday
Sep 19
|
Mostly Sunny
|
92°F |
8 to 12 mph
SSW
|
|
Saturday Night
Sep 19
|
Chance Rain Showers
|
70°F |
7 mph
SSW
|
|
Sunday
Sep 20
|
Chance Rain Showers
|
89°F |
6 to 12 mph
WNW
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
66°F |
6 to 9 mph
NE
|
|
Monday
Sep 21
|
Chance Showers And Thunderstorms
|
81°F |
6 to 10 mph
NW
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms
|
61°F |
7 to 10 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Clarksville.
