Marion Regional, IL Weather Tomorrow

Stay informed with tomorrow's weather forecast for Marion Regional and the next 5 days, including 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 Marion Regional area.
Updated: Mon Oct 5th 2026 9:15 PM CDT
Marion Regional, IL Weather – 10-5 – Sunny
80° / 53°
Sunny
In Marion Regional, bright and sunny conditions with highs near 80°F and lows around 53°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 11mph on average and gusts of 13.9mph at 11 PM. Humidity levels should be comfortable, sitting around 47% on average, the maximum being 52% at 11 PM and 47% being its lowest at 10 PM. Barometric pressure is its highest of 30.16inHg at 10 PM, a lowest point of 30.16inHg at 10 PM with an avg 30.16inHg.
Marion Regional, IL Weather – 10-6 – Sunny
81° / 51°

Weather Tomorrow

Sunny
Highs will reach 81°F with lows near 51°F in Marion Regional, where a sunny day is. There's a very small chance of rainfall, only about 1%. Winds will be light at 7mph and gusts of 17.2mph at 5 PM. Humidity levels should be comfortable, sitting around 45% on average, the maximum being 68% at 6 AM and 21% being its lowest at 3 PM. Barometric pressure is its highest of 30.15inHg at 12 AM, a lowest point of 29.95inHg at 5 PM with an avg 30.06inHg.
Marion Regional, IL Weather – 10-7 – Sunny
86° / 55°
Sunny
Highs will reach 86°F with lows near 55°F in Marion Regional, where a sunny day is. There's a very small chance of rainfall, only about 1%. Winds will be light at 10mph and gusts of 21.7mph at 10 PM. Humidity levels should be comfortable, sitting around 42% on average, the maximum being 58% at 6 AM and 22% being its lowest at 2 PM. Barometric pressure is its highest of 29.99inHg at 10 AM, a lowest point of 29.88inHg at 5 PM with an avg 29.95inHg.
Marion Regional, IL Weather – 10-8 – Sunny
85° / 61°
Sunny
In Marion Regional, it will be sunny with highs near 85°F and lows around 61°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 12mph on average and gusts of 23.5mph at 10 PM. Humidity levels should be comfortable, sitting around 43% on average, the maximum being 72% at 8 AM and 17% being its lowest at 5 PM. Barometric pressure is its highest of 30.14inHg at 11 PM, a lowest point of 29.94inHg at 1 AM with an avg 30.04inHg.
Marion Regional, IL Weather – 10-9 – Sunny
83° / 53°
Sunny
In Marion Regional, sunshine is likely with a high near 83°F and a low around 53°F. There's a very small chance of rainfall, only about 2%. Winds will be light at 10mph and gusts of 21.7mph at 8 AM. Humidity levels should be comfortable, sitting around 32% on average, the maximum being 49% at 7 AM and 16% being its lowest at 3 PM. Barometric pressure is its highest of 30.21inHg at 9 AM, a lowest point of 30.1inHg at 5 PM with an avg 30.15inHg.
Marion Regional, IL Weather – 10-10 – Overcast
75° / 58°
Overcast
Marion Regional could see overcast with daytime highs of 75°F and nighttime lows near 58°F. The chance of rain is 79% with an estimated 1.64in. Wind will be moderate, blowing around 15mph on average and gusts of 31.1mph at 6 PM. The humidity will be on the higher side, averaging about 61%, the maximum being 96% at 11 PM and 36% being its lowest at 12 AM. Barometric pressure is its highest of 30.12inHg at 12 AM, a lowest point of 29.87inHg at 11 PM with an avg 30.02inHg.

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