Hamilton County, IL Weather Tomorrow

Prepare for the week ahead with tomorrow's Hamilton County weather forecast and a complete 5 day outlook covering 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 throughout the Hamilton County area.
Updated: Tue Oct 13th 2026 11:00 PM CDT
Hamilton County, IL Weather – 10-13 – Sunny
93° / 66°
Sunny
Hamilton County, IL Weather – 10-14 – Overcast
79° / 70°

Weather Tomorrow

Overcast
Cloud-filled skies are in the forecast for Hamilton County, with a high of 79°F and a low of 70°F. The chance of rain is 84% with an estimated 0.33in. Wind will be moderate, blowing around 11mph on average and gusts of 29.1mph at 12 AM. High humidity with average of 85% is anticipated, the maximum being 97% at 10 PM and 69% being its lowest at 12 AM. Barometric pressure is its highest of 30.03inHg at 11 PM, a lowest point of 29.93inHg at 12 AM with an avg 29.97inHg.
Hamilton County, IL Weather – 10-15 – Fog
87° / 68°
Fog
Hamilton County is set for fog with temperatures peaking at 87°F and dipping to 68°F. Rainfall predicted to have a 70% chance with an estimated 0.11in. Wind will be moderate, blowing around 12mph on average and gusts of 30.3mph at 11 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 98% at 6 AM and 51% being its lowest at 5 PM. Barometric pressure is its highest of 30.03inHg at 9 AM, a lowest point of 29.89inHg at 6 PM with an avg 29.97inHg.
Hamilton County, IL Weather – 10-16 – Sunny
76° / 48°
Sunny
Bright and sunny conditions in Hamilton County, with a high of 76°F and a low of 48°F. There's a very small chance of rainfall, only about 7% with an estimated 0in. Winds will be strong at speeds peaking at 25mph and gusts of 34.9mph at 5 AM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 90% at 4 AM and 39% being its lowest at 1 PM. Barometric pressure is its highest of 30.4inHg at 11 PM, a lowest point of 29.9inHg at 12 AM with an avg 30.15inHg.
Hamilton County, IL Weather – 10-17 – Sunny
63° / 44°
Sunny
In Hamilton County, bright and sunny conditions with highs near 63°F and lows around 44°F. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 13mph on average and gusts of 24mph at 12 AM. Humidity levels should be comfortable, sitting around 55% on average, the maximum being 77% at 7 AM and 33% being its lowest at 5 PM. Barometric pressure is its highest of 30.52inHg at 9 AM, a lowest point of 30.36inHg at 5 PM with an avg 30.43inHg.
Hamilton County, IL Weather – 10-18 – Sunny
71° / 44°
Sunny
Sunshine is in the forecast for Hamilton County, with a high of 71°F and a low of 44°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 13mph on average and gusts of 23.9mph at 11 PM. Humidity levels should be comfortable, sitting around 45% on average, the maximum being 61% at 7 AM and 29% being its lowest at 3 PM. Barometric pressure is its highest of 30.38inHg at 12 AM, a lowest point of 30.23inHg at 4 PM with an avg 30.32inHg.

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