Mount Prospect, IL Weather Tomorrow

For a complete weather outlook, review tomorrow's Mount Prospect forecast and the following 5 days with 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 Mount Prospect area and around Cook county, Illinois.
Updated: Fri Nov 6th 2026 4:30 PM CST
Mount Prospect, IL Weather – 11-6 – Sunny
48° / 40°
Sunny
Sunshine is in the forecast for Mount Prospect, with a high of 48°F and a low of 40°F. There's a very small chance of rainfall, only about 6% with an estimated 0in. Wind will be moderate, blowing around 12mph on average and gusts of 14.4mph at 10 PM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 71% at 9 PM and 50% being its lowest at 5 PM. Barometric pressure is its highest of 30.2inHg at 8 PM, a lowest point of 30.16inHg at 5 PM with an avg 30.19inHg.
Mount Prospect, IL Weather – 11-7 – Sunny
50° / 36°

Weather Tomorrow

Sunny
Mount Prospect could see sunshine with daytime highs of 50°F and nighttime lows near 36°F. There's a very small chance of rainfall, only about 5%. Winds will be light at 8mph and gusts of 21.5mph at 11 PM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 79% at 6 AM and 40% being its lowest at 1 PM. Barometric pressure is its highest of 30.23inHg at 8 AM, a lowest point of 30.13inHg at 5 PM with an avg 30.17inHg.
Mount Prospect, IL Weather – 11-8 – Sunny
60° / 41°
Sunny
Highs will reach 60°F with lows near 41°F in Mount Prospect, where sunshine is. There's a very small chance of rainfall, only about 4%. Wind will be moderate, blowing around 13mph on average and gusts of 33.4mph at 8 AM. Humidity levels should be comfortable, sitting around 59% on average, the maximum being 78% at 6 AM and 46% being its lowest at 4 PM. Barometric pressure is its highest of 30.1inHg at 1 AM, a lowest point of 29.93inHg at 2 PM with an avg 30.02inHg.
Mount Prospect, IL Weather – 11-9 – Sunny
60° / 41°
Sunny
It will be sunny in Mount Prospect, with a high of 60°F and a low of 41°F. There's a very small chance of rainfall, only about 7%. Wind will be moderate, blowing around 12mph on average and gusts of 35.4mph at 9 PM. Humidity levels should be comfortable, sitting around 59% on average, the maximum being 78% at 6 AM and 35% being its lowest at 2 PM. Barometric pressure is its highest of 30.13inHg at 9 AM, a lowest point of 29.86inHg at 11 PM with an avg 30.01inHg.
Mount Prospect, IL Weather – 11-10 – Sunny
61° / 47°
Sunny
Sunshine is in the forecast for Mount Prospect, with a high of 61°F and a low of 47°F. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 11mph on average and gusts of 32mph at 12 AM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 84% at 6 AM and 32% being its lowest at 2 PM. Barometric pressure is its highest of 30.04inHg at 9 PM, a lowest point of 29.87inHg at 1 AM with an avg 29.98inHg.
Mount Prospect, IL Weather – 11-11 – Sunny
50° / 41°
Sunny
In Mount Prospect, it will be sunny with highs near 50°F and lows around 41°F. There might be light rainfall having a 23% chance with an estimated 0.01in. Winds will be light at 8mph and gusts of 21.5mph at 6 AM. The humidity will be on the higher side, averaging about 64%, the maximum being 80% at 11 PM and 51% being its lowest at 3 PM. Barometric pressure is its highest of 30.12inHg at 9 AM, a lowest point of 30inHg at 11 PM with an avg 30.06inHg.

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