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Gillum, IL Weather Tomorrow

Access tomorrow's Gillum weather forecast and the next 5 days of weather details, 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 for the Gillum area and around McLean county, Illinois.
Updated: Wed Sep 2nd 2026 5:45 PM CDT
Gillum, IL Weather – 9-2 – Sunny
97° / 73°
Sunny
Sunshine is in the forecast for Gillum, with a high of 97°F and a low of 73°F. There's a very small chance of rainfall, only about 4%. Wind will be moderate, blowing around 12mph on average and gusts of 28.9mph at 11 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 70% at 8 PM and 53% being its lowest at 6 PM. Barometric pressure is its highest of 29.9inHg at 10 PM, a lowest point of 29.88inHg at 6 PM with an avg 29.89inHg.
Gillum, IL Weather – 9-3 – Sunny
93° / 77°

Weather Tomorrow

Sunny
Bright and sunny conditions in Gillum, with a high of 93°F and a low of 77°F. There's a very small chance of rainfall, only about 4%. Wind will be moderate, blowing around 12mph on average and gusts of 29.8mph at 5 AM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 74% at 8 AM and 48% being its lowest at 9 PM. Barometric pressure is its highest of 29.94inHg at 11 AM, a lowest point of 29.84inHg at 6 PM with an avg 29.9inHg.
Gillum, IL Weather – 9-4 – Sunny
90° / 77°
Sunny
In Gillum, a sunny day is likely with a high near 90°F and a low around 77°F. There's a very small chance of rainfall, only about 5%. Wind will be moderate, blowing around 11mph on average and gusts of 25.5mph at 9 AM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 74% at 8 AM and 51% being its lowest at 12 AM. Barometric pressure is its highest of 29.97inHg at 11 AM, a lowest point of 29.88inHg at 6 PM with an avg 29.91inHg.
Gillum, IL Weather – 9-5 – Sunny
91° / 76°
Sunny
In Gillum, a sunny day is likely with a high near 91°F and a low around 76°F. There might be light rainfall having a 17% chance with an estimated 0.01in. Wind will be moderate, blowing around 12mph on average and gusts of 21.1mph at 10 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 85% at 10 PM and 50% being its lowest at 2 PM. Barometric pressure is its highest of 29.93inHg at 8 AM, a lowest point of 29.84inHg at 6 PM with an avg 29.89inHg.
Gillum, IL Weather – 9-6 – Sunny
79° / 68°
Sunny
Gillum may see a sunny day, with daytime highs of 79°F and overnight lows near 68°F. There might be light rainfall having a 14% chance with an estimated 0in. Wind will be moderate, blowing around 13mph on average and gusts of 26.2mph at 9 PM. High humidity with average of 82% is anticipated, the maximum being 99% at 6 AM and 63% being its lowest at 2 PM. Barometric pressure is its highest of 30.05inHg at 10 PM, a lowest point of 29.92inHg at 12 AM with an avg 29.98inHg.
Gillum, IL Weather – 9-7 – Overcast
78° / 62°
Overcast
Overcast is in the forecast for Gillum, with a high of 78°F and a low of 62°F. There might be light rainfall having a 14% chance. Wind will be moderate, blowing around 12mph on average and gusts of 25.7mph at 11 PM. The humidity will be on the higher side, averaging about 75%, the maximum being 90% at 6 AM and 58% being its lowest at 1 PM. Barometric pressure is its highest of 30.05inHg at 7 AM, a lowest point of 29.97inHg at 11 PM with an avg 30.01inHg.

Currently

Sunny 94°F
29.88 inHg.
Barometer
45%
Humidity
ESE 5.8 mph
Wind
Sunny

5 Day Forecast Nearby

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