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Saybrook, IL Weather Tomorrow

See how tomorrow's weather in Saybrook compares with the upcoming 5 day forecast, including daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Saybrook area and around McLean county, Illinois.
Updated: Tue Sep 22nd 2026 4:15 AM CDT
Saybrook, IL Weather – 9-22 – Scattered Showers
64° / 53°
Scattered Showers
On and off showers are set to occur in Saybrook, with a high of 64°F and a low of 53°F. There's a moderate 38% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 13mph on average and gusts of 23.3mph at 9 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 79% at 9 PM and 66% being its lowest at 2 PM. Barometric pressure is its highest of 30.22inHg at 10 PM, a lowest point of 30.12inHg at 5 AM with an avg 30.18inHg.
Saybrook, IL Weather – 9-23 – Overcast
63° / 56°

Weather Tomorrow

Overcast
Daytime highs will reach 63°F with lows dropping to 56°F in Saybrook, where it will be overcast. There's a moderate 28% chance of rainfall with an estimated 0in. Wind will be moderate, blowing around 14mph on average and gusts of 22.2mph at 1 AM. The humidity will be on the higher side, averaging about 75%, the maximum being 84% at 9 PM and 60% being its lowest at 1 AM. Barometric pressure is its highest of 30.29inHg at 9 PM, a lowest point of 30.21inHg at 12 AM with an avg 30.26inHg.
Saybrook, IL Weather – 9-24 – Cloudy
69° / 55°
Cloudy
Saybrook is set for overcast conditions with temperatures peaking at 69°F and dipping to 55°F. There might be light rainfall having a 23% chance with an estimated 0in. Winds will be light at 10mph and gusts of 18.6mph at 10 PM. High humidity with average of 81% is anticipated, the maximum being 96% at 11 PM and 66% being its lowest at 1 PM. Barometric pressure is its highest of 30.29inHg at 9 AM, a lowest point of 30.23inHg at 4 PM with an avg 30.26inHg.
Saybrook, IL Weather – 9-25 – Overcast
68° / 56°
Overcast
In Saybrook, it will be overcast with highs near 68°F and lows around 56°F. There might be light rainfall having a 17% chance. Winds will be light at 9mph and gusts of 19mph at 11 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 96% at 12 AM and 50% being its lowest at 4 PM. Barometric pressure is its highest of 30.28inHg at 10 AM, a lowest point of 30.15inHg at 5 PM with an avg 30.22inHg.
Saybrook, IL Weather – 9-26 – Scattered Showers
62° / 55°
Scattered Showers
Saybrook could see passing showers with daytime highs of 62°F and nighttime lows near 55°F. Rainfall predicted to have a 66% chance with an estimated 0.06in. Winds will be light at 10mph and gusts of 21.1mph at 5 AM. The humidity will be on the higher side, averaging about 74%, the maximum being 81% at 7 AM and 65% being its lowest at 5 AM. Barometric pressure is its highest of 30.21inHg at 12 AM, a lowest point of 30.11inHg at 5 PM with an avg 30.14inHg.
Saybrook, IL Weather – 9-27 – Sunny
70° / 54°
Sunny
Bright and sunny conditions in Saybrook, with a high of 70°F and a low of 54°F. There's a very small chance of rainfall, only about 4%. Winds will be light at 8mph and gusts of 9.4mph at 10 PM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 66% at 7 AM and 46% being its lowest at 4 PM. Barometric pressure is its highest of 30.14inHg at 7 AM, a lowest point of 30.07inHg at 5 PM with an avg 30.11inHg.

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