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Louisville, IL Weather Tomorrow

Louisville weather tomorrow and 5 day forecast with this week's outlook featuring precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the Louisville area and around Clay county, Illinois.
Updated: Sat Sep 5th 2026 11:00 AM CDT
Louisville, IL Weather – 9-5 – Sunny
104° / 73°
Sunny
Daytime highs will reach 104°F with lows dropping to 73°F in Louisville, where it will be sunny. Rainfall predicted to have a 66% chance with an estimated 0.57in. Wind will be moderate, blowing around 18mph on average and gusts of 28.9mph at 5 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 92% at 6 PM and 28% being its lowest at 4 PM. Barometric pressure is its highest of 29.92inHg at 10 PM, a lowest point of 29.79inHg at 5 PM with an avg 29.87inHg.
Louisville, IL Weather – 9-6 – Sunny
87° / 69°

Weather Tomorrow

Sunny
A sunny day is in the forecast for Louisville, with a high of 87°F and a low of 69°F. There might be light rainfall having a 17% chance with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 28mph at 9 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 98% at 4 AM and 36% being its lowest at 2 PM. Barometric pressure is its highest of 30.02inHg at 11 PM, a lowest point of 29.89inHg at 12 AM with an avg 29.96inHg.
Louisville, IL Weather – 9-7 – Sunny
87° / 61°
Sunny
Louisville could see sunshine with daytime highs of 87°F and nighttime lows near 61°F. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 11mph on average and gusts of 27.1mph at 1 AM. The humidity will be on the higher side, averaging about 64%, the maximum being 95% at 4 AM and 27% being its lowest at 4 PM. Barometric pressure is its highest of 30.1inHg at 9 AM, a lowest point of 29.99inHg at 5 PM with an avg 30.05inHg.
Louisville, IL Weather – 9-8 – Sunny
96° / 67°
Sunny
Louisville may see a sunny day, with daytime highs of 96°F and overnight lows near 67°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 12mph on average and gusts of 32.7mph at 11 PM. Humidity levels should be comfortable, sitting around 59% on average, the maximum being 92% at 6 AM and 26% being its lowest at 4 PM. Barometric pressure is its highest of 30.1inHg at 8 AM, a lowest point of 29.98inHg at 5 PM with an avg 30.04inHg.
Louisville, IL Weather – 9-9 – Sunny
100° / 74°
Sunny
In Louisville, it will be sunny with highs near 100°F and lows around 74°F. Rainfall predicted to have a 57% chance with an estimated 0.14in. Wind will be moderate, blowing around 16mph on average and gusts of 37mph at 2 AM. Humidity levels should be comfortable, sitting around 54% on average, the maximum being 80% at 7 PM and 28% being its lowest at 3 PM. Barometric pressure is its highest of 30.1inHg at 8 AM, a lowest point of 29.94inHg at 5 PM with an avg 30.03inHg.
Louisville, IL Weather – 9-10 – Scattered Showers
75° / 66°
Scattered Showers
Scattered showers are in the forecast for Louisville, with a high of 75°F and a low of 66°F. There's a moderate 48% chance of rainfall with an estimated 0.02in. Winds will be light at 7mph and gusts of 17mph at 12 AM. The humidity will be on the higher side, averaging about 73%, the maximum being 85% at 11 PM and 63% being its lowest at 4 PM. Barometric pressure is its highest of 30.1inHg at 10 AM, a lowest point of 30.01inHg at 7 AM with an avg 30.04inHg.

Currently

Sunny 100°F
29.92 inHg.
Barometer
47%
Humidity
W 12.6 mph
Wind
Sunny

5 Day Forecast Nearby

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