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Fairmount, IL Weather Tomorrow

Weather conditions can change quickly, so check tomorrow's Fairmount forecast and the complete 5 day outlook with daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Fairmount area and around Vermilion county, Illinois.
Updated: Tue Oct 13th 2026 11:15 AM CDT
Fairmount, IL Weather – 10-13 – Sunny
89° / 67°
Sunny
Bright and sunny conditions in Fairmount, with a high of 89°F and a low of 67°F. Rainfall predicted to have a 57% chance with an estimated 0.07in. Wind will be moderate, blowing around 14mph on average and gusts of 18.2mph at 3 PM. Humidity levels should be comfortable, sitting around 54% on average, the maximum being 77% at 11 PM and 39% being its lowest at 1 PM. Barometric pressure is its highest of 29.89inHg at 11 PM, a lowest point of 29.83inHg at 3 PM with an avg 29.86inHg.
Fairmount, IL Weather – 10-14 – Overcast
78° / 67°

Weather Tomorrow

Overcast
In Fairmount, it will be overcast with highs near 78°F and lows around 67°F. The chance of rain is 82% with an estimated 0.19in. Wind will be moderate, blowing around 11mph on average and gusts of 20mph at 10 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 91% at 7 AM and 66% being its lowest at 1 PM. Barometric pressure is its highest of 30.06inHg at 10 PM, a lowest point of 29.88inHg at 12 AM with an avg 29.98inHg.
Fairmount, IL Weather – 10-15 – Overcast
77° / 64°
Overcast
Skies will be overcast in Fairmount, with a high of 77°F and a low of 64°F. The chance of rain is 78% with an estimated 0.14in. Wind will be moderate, blowing around 16mph on average and gusts of 27.5mph at 5 PM. High humidity with average of 81% is anticipated, the maximum being 91% at 8 PM and 69% being its lowest at 2 AM. Barometric pressure is its highest of 30.07inHg at 12 AM, a lowest point of 29.82inHg at 11 PM with an avg 29.95inHg.
Fairmount, IL Weather – 10-16 – Sunny
71° / 44°
Sunny
Sunshine is in the forecast for Fairmount, with a high of 71°F and a low of 44°F. There might be light rainfall having a 17% chance with an estimated 0in. Winds will be strong at speeds peaking at 24mph and gusts of 34.3mph at 7 AM. The humidity will be on the higher side, averaging about 66%, the maximum being 88% at 1 AM and 53% being its lowest at 1 PM. Barometric pressure is its highest of 30.44inHg at 11 PM, a lowest point of 29.81inHg at 12 AM with an avg 30.16inHg.
Fairmount, IL Weather – 10-17 – Sunny
58° / 38°
Sunny
Fairmount could see sunshine with daytime highs of 58°F and nighttime lows near 38°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 13mph on average and gusts of 23.3mph at 12 AM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 79% at 6 AM and 37% being its lowest at 4 PM. Barometric pressure is its highest of 30.55inHg at 9 AM, a lowest point of 30.36inHg at 9 PM with an avg 30.45inHg.
Fairmount, IL Weather – 10-18 – Sunny
65° / 41°
Sunny
Daytime highs will reach 65°F with lows dropping to 41°F in Fairmount, where bright and sunny conditions. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 14mph on average and gusts of 30mph at 10 PM. Humidity levels should be comfortable, sitting around 43% on average, the maximum being 56% at 7 AM and 27% being its lowest at 1 PM. Barometric pressure is its highest of 30.35inHg at 12 AM, a lowest point of 30.16inHg at 6 PM with an avg 30.25inHg.

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