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Grafton, IL Weather Tomorrow

Need tomorrow's weather for Grafton? This 5 day forecast provides precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Grafton area and around Jersey county, Illinois.
Updated: Tue Oct 27th 2026 3:45 PM CDT
Grafton, IL Weather – 10-27 – Overcast
72° / 55°
Overcast
In Grafton, cloud-filled skies are likely with a high near 72°F and a low around 55°F. There's a very small chance of rainfall, only about 10%. Winds will be light at 10mph and gusts of 11.7mph at 7 PM. Humidity levels should be comfortable, sitting around 54% on average, the maximum being 64% at 10 PM and 38% being its lowest at 5 PM. Barometric pressure is its highest of 30.18inHg at 9 PM, a lowest point of 30.15inHg at 5 PM with an avg 30.17inHg.
Grafton, IL Weather – 10-28 – Sunny
80° / 54°

Weather Tomorrow

Sunny
Daytime highs will reach 80°F with lows dropping to 54°F in Grafton, where it will be sunny. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 12mph on average and gusts of 20.6mph at 9 PM. Humidity levels should be comfortable, sitting around 51% on average, the maximum being 77% at 7 AM and 31% being its lowest at 2 PM. Barometric pressure is its highest of 30.22inHg at 10 AM, a lowest point of 30.09inHg at 5 PM with an avg 30.16inHg.
Grafton, IL Weather – 10-29 – Sunny
82° / 57°
Sunny
In Grafton, it will be sunny with highs near 82°F and lows around 57°F. There's a moderate 36% chance of rainfall with an estimated 0.03in. Wind will be moderate, blowing around 11mph on average and gusts of 24mph at 8 AM. Humidity levels should be comfortable, sitting around 60% on average, the maximum being 90% at 11 PM and 39% being its lowest at 12 PM. Barometric pressure is its highest of 30.18inHg at 11 PM, a lowest point of 30.08inHg at 3 PM with an avg 30.13inHg.
Grafton, IL Weather – 10-30 – Overcast
79° / 58°
Overcast
Daytime highs will reach 79°F with lows dropping to 58°F in Grafton, where skies will be overcast. Rainfall predicted to have a 57% chance with an estimated 0.05in. Wind will be moderate, blowing around 11mph on average and gusts of 20.4mph at 8 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 97% at 7 AM and 36% being its lowest at 3 PM. Barometric pressure is its highest of 30.25inHg at 9 AM, a lowest point of 30.14inHg at 5 PM with an avg 30.19inHg.
Grafton, IL Weather – 10-31 – Overcast
70° / 61°
Overcast
Grafton could see cloud-filled skies with daytime highs of 70°F and nighttime lows near 61°F. There's a moderate 36% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 14mph on average and gusts of 24.7mph at 9 PM. The humidity will be on the higher side, averaging about 61%, the maximum being 86% at 11 PM and 48% being its lowest at 11 AM. Barometric pressure is its highest of 30.18inHg at 10 AM, a lowest point of 30.03inHg at 11 PM with an avg 30.12inHg.
Grafton, IL Weather – 11-1 – Light Drizzle
68° / 60°
Light Drizzle
Light Drizzle is in the forecast for Grafton, with a high of 68°F and a low of 60°F. The chance of rain is 85% with an estimated 0.16in. Wind will be moderate, blowing around 12mph on average and gusts of 23.8mph at 2 AM. High humidity with average of 86% is anticipated, the maximum being 96% at 6 AM and 72% being its lowest at 1 PM. Barometric pressure is its highest of 30.06inHg at 3 AM, a lowest point of 29.95inHg at 5 AM with an avg 30inHg.

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