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Oak Brook, IL Weather Tomorrow

Follow tomorrow's Oak Brook weather with an accurate 5 day outlook that includes 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 Oak Brook area and around DuPage county, Illinois.
Updated: Mon Oct 12th 2026 9:30 AM CDT
Oak Brook, IL Weather – 10-12 – Overcast
84° / 66°
Overcast
Skies will be overcast in Oak Brook, with a high of 84°F and a low of 66°F. There's a moderate 36% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 13mph on average and gusts of 34.9mph at 11 PM. Humidity levels should be comfortable, sitting around 57% on average, the maximum being 63% at 11 PM and 45% being its lowest at 2 PM. Barometric pressure is its highest of 29.85inHg at 10 AM, a lowest point of 29.73inHg at 5 PM with an avg 29.76inHg.
Oak Brook, IL Weather – 10-13 – Sunny
80° / 69°

Weather Tomorrow

Sunny
A sunny day is in the forecast for Oak Brook, with a high of 80°F and a low of 69°F. Rainfall predicted to have a 57% chance with an estimated 0.07in. Wind will be moderate, blowing around 12mph on average and gusts of 36.1mph at 12 AM. The humidity will be on the higher side, averaging about 65%, the maximum being 88% at 11 PM and 50% being its lowest at 1 PM. Barometric pressure is its highest of 29.86inHg at 8 PM, a lowest point of 29.72inHg at 1 AM with an avg 29.79inHg.
Oak Brook, IL Weather – 10-14 – Overcast
68° / 59°
Overcast
Oak Brook could see cloud-filled skies with daytime highs of 68°F and nighttime lows near 59°F. The chance of rain is 88% with an estimated 0.47in. Wind will be moderate, blowing around 11mph on average and gusts of 21.3mph at 10 PM. High humidity with average of 81% is anticipated, the maximum being 95% at 6 AM and 67% being its lowest at 4 PM. Barometric pressure is its highest of 30.18inHg at 11 PM, a lowest point of 29.85inHg at 12 AM with an avg 30inHg.
Oak Brook, IL Weather – 10-15 – Overcast
58° / 55°
Overcast
Oak Brook may see overcast, with daytime highs of 58°F and overnight lows near 55°F. The chance of rain is 90% with an estimated 0.9in. Wind will be moderate, blowing around 11mph on average and gusts of 21.3mph at 3 PM. High humidity with average of 85% is anticipated, the maximum being 97% at 3 PM and 72% being its lowest at 12 AM. Barometric pressure is its highest of 30.18inHg at 2 AM, a lowest point of 29.94inHg at 10 PM with an avg 30.08inHg.
Oak Brook, IL Weather – 10-16 – Scattered Showers
56° / 43°
Scattered Showers
In Oak Brook, showers likely at times with highs near 56°F and lows around 43°F. There's a moderate 39% chance of rainfall with an estimated 0.03in. Wind will be moderate, blowing around 18mph on average and gusts of 31.8mph at 10 AM. The humidity will be on the higher side, averaging about 66%, the maximum being 93% at 12 AM and 48% being its lowest at 11 PM. Barometric pressure is its highest of 30.48inHg at 11 PM, a lowest point of 29.94inHg at 12 AM with an avg 30.17inHg.
Oak Brook, IL Weather – 10-17 – Sunny
53° / 39°
Sunny
Oak Brook may see a sunny day, with daytime highs of 53°F and overnight lows near 39°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 12mph on average and gusts of 25.8mph at 12 AM. Humidity levels should be comfortable, sitting around 41% on average, the maximum being 54% at 7 AM and 23% being its lowest at 1 PM. Barometric pressure is its highest of 30.57inHg at 10 AM, a lowest point of 30.38inHg at 11 PM with an avg 30.49inHg.

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