Clarksville, IL Weather Tomorrow

See what tomorrow's weather has in store for Clarksville with a reliable 5 day forecast featuring precipitation probability, daily and nightly weather conditions, high and low temperature trends, sunrise and sunset information, sky cover, wind speed, wind direction, and wind chill for the Clarksville area and around Clark county, Illinois.
Updated: Thu Oct 15th 2026 7:15 AM CDT
Clarksville, IL Weather – 10-15 – Overcast
78° / 66°
Overcast
Highs will reach 78°F with lows near 66°F in Clarksville, where overcast is. The chance of rain is 79% with an estimated 0.15in. Wind will be moderate, blowing around 17mph on average and gusts of 34.2mph at 7 PM. High humidity with average of 84% is anticipated, the maximum being 88% at 8 AM and 74% being its lowest at 3 PM. Barometric pressure is its highest of 30.04inHg at 8 AM, a lowest point of 29.82inHg at 4 PM with an avg 29.91inHg.
Clarksville, IL Weather – 10-16 – Scattered Showers
69° / 48°

Weather Tomorrow

Scattered Showers
Clarksville could see scattered showers with daytime highs of 69°F and nighttime lows near 48°F. Rainfall predicted to have a 51% chance with an estimated 0.03in. Winds will be strong at speeds peaking at 21mph and gusts of 30.4mph at 10 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 87% at 2 AM and 47% being its lowest at 1 PM. Barometric pressure is its highest of 30.34inHg at 11 PM, a lowest point of 29.86inHg at 12 AM with an avg 30.09inHg.
Clarksville, IL Weather – 10-17 – Sunny
57° / 39°
Sunny
Clarksville is set for sunshine with temperatures peaking at 57°F and dipping to 39°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 16mph on average and gusts of 29mph at 1 AM. Humidity levels should be comfortable, sitting around 50% on average, the maximum being 81% at 7 AM and 22% being its lowest at 4 PM. Barometric pressure is its highest of 30.55inHg at 10 AM, a lowest point of 30.35inHg at 12 AM with an avg 30.47inHg.
Clarksville, IL Weather – 10-18 – Sunny
65° / 39°
Sunny
Clarksville may see a sunny day, with daytime highs of 65°F and overnight lows near 39°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 11mph on average and gusts of 15mph at 8 AM. Humidity levels should be comfortable, sitting around 41% on average, the maximum being 57% at 7 AM and 23% being its lowest at 3 PM. Barometric pressure is its highest of 30.51inHg at 9 AM, a lowest point of 30.35inHg at 4 PM with an avg 30.43inHg.
Clarksville, IL Weather – 10-19 – Sunny
70° / 45°
Sunny
Clarksville may see a sunny day, with daytime highs of 70°F and overnight lows near 45°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 12mph on average and gusts of 19.7mph at 8 AM. Humidity levels should be comfortable, sitting around 45% on average, the maximum being 69% at 7 AM and 26% being its lowest at 4 PM. Barometric pressure is its highest of 30.44inHg at 8 AM, a lowest point of 30.32inHg at 4 PM with an avg 30.38inHg.
Clarksville, IL Weather – 10-20 – Overcast
72° / 50°
Overcast
It will be overcast in Clarksville, with a high of 72°F and a low of 50°F. There's a very small chance of rainfall, only about 7%. Winds will be light at 8mph and gusts of 13mph at 1 PM. Humidity levels should be comfortable, sitting around 51% on average, the maximum being 67% at 7 AM and 39% being its lowest at 4 PM. Barometric pressure is its highest of 30.4inHg at 10 AM, a lowest point of 30.3inHg at 4 PM with an avg 30.35inHg.

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