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Viola, IL Weather Tomorrow

Before heading out, check tomorrow's Viola weather and the extended 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 across the Viola area and around Mercer county, Illinois.
Updated: Wed Sep 9th 2026 5:00 AM CDT
Viola, IL Weather – 9-9 – Overcast
77° / 68°
Overcast
Overcast is in the forecast for Viola, with a high of 77°F and a low of 68°F. The chance of rain is 90% with an estimated 7.92in. Winds will be light at 9mph and gusts of 17.1mph at 9 AM. High humidity with average of 87% is anticipated, the maximum being 96% at 10 PM and 77% being its lowest at 5 PM. Barometric pressure is its highest of 30inHg at 9 AM, a lowest point of 29.9inHg at 6 PM with an avg 29.96inHg.
Viola, IL Weather – 9-10 – Overcast
77° / 65°

Weather Tomorrow

Overcast
Viola is set for overcast with temperatures peaking at 77°F and dipping to 65°F. Rainfall predicted to have a 62% chance with an estimated 0.05in. Winds will be light at 10mph and gusts of 18.8mph at 5 PM. High humidity with average of 82% is anticipated, the maximum being 97% at 7 AM and 62% being its lowest at 4 PM. Barometric pressure is its highest of 30inHg at 11 PM, a lowest point of 29.93inHg at 5 PM with an avg 29.96inHg.
Viola, IL Weather – 9-11 – Sunny
80° / 58°
Sunny
In Viola, a sunny day is likely with a high near 80°F and a low around 58°F. There's a very small chance of rainfall, only about 5%. Wind will be moderate, blowing around 13mph on average and gusts of 29.1mph at 11 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 91% at 1 AM and 46% being its lowest at 3 PM. Barometric pressure is its highest of 30.01inHg at 12 AM, a lowest point of 29.81inHg at 8 PM with an avg 29.93inHg.
Viola, IL Weather – 9-12 – Overcast
79° / 67°
Overcast
Daytime highs will reach 79°F with lows dropping to 67°F in Viola, where it will be overcast. There's a moderate 27% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 13mph on average and gusts of 32.9mph at 3 AM. The humidity will be on the higher side, averaging about 73%, the maximum being 97% at 11 PM and 62% being its lowest at 4 PM. Barometric pressure is its highest of 30.03inHg at 10 PM, a lowest point of 29.83inHg at 3 AM with an avg 29.91inHg.
Viola, IL Weather – 9-13 – Scattered Showers
81° / 61°
Scattered Showers
Daytime highs will reach 81°F with lows dropping to 61°F in Viola, where on and off showers are set to occur. Rainfall predicted to have a 60% chance with an estimated 0.04in. Winds will be light at 9mph and gusts of 20.6mph at 10 PM. The humidity will be on the higher side, averaging about 79%, the maximum being 96% at 12 AM and 63% being its lowest at 1 PM. Barometric pressure is its highest of 30.07inHg at 4 AM, a lowest point of 29.92inHg at 5 AM with an avg 29.96inHg.
Viola, IL Weather – 9-14 – Light Rain Shower
81° / 70°
Light Rain Shower
Viola may see rain, with daytime highs of 81°F and overnight lows near 70°F. The chance of rain is 90% with an estimated 0.96in. Wind will be moderate, blowing around 14mph on average and gusts of 31.5mph at 10 AM. High humidity with average of 89% is anticipated, the maximum being 98% at 11 PM and 68% being its lowest at 4 PM. Barometric pressure is its highest of 29.92inHg at 12 AM, a lowest point of 29.83inHg at 6 PM with an avg 29.88inHg.

Currently

Heavy Rain 70°F
29.96 inHg.
Barometer
94%
Humidity
SE 11.9 mph
Wind
Heavy Rain

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