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Mchenry, IL Weather Tomorrow

Tomorrow's weather forecast for Mchenry is supported by a complete 5 day outlook covering 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 Mchenry area and around McHenry county, Illinois.
Updated: Sat Nov 7th 2026 11:30 PM CST
Mchenry, IL Weather – 11-7 – Sunny
49° / 32°
Sunny
Mchenry, IL Weather – 11-8 – Sunny
58° / 39°

Weather Tomorrow

Sunny
In Mchenry, a sunny day is likely with a high near 58°F and a low around 39°F. There's a very small chance of rainfall, only about 7%. Wind will be moderate, blowing around 17mph on average and gusts of 34.9mph at 4 AM. The humidity will be on the higher side, averaging about 69%, the maximum being 88% at 6 AM and 43% being its lowest at 1 PM. Barometric pressure is its highest of 30.07inHg at 12 AM, a lowest point of 29.93inHg at 1 PM with an avg 30inHg.
Mchenry, IL Weather – 11-9 – Sunny
57° / 38°
Sunny
Bright and sunny conditions in Mchenry, with a high of 57°F and a low of 38°F. There's a very small chance of rainfall, only about 10%. Wind will be moderate, blowing around 13mph on average and gusts of 32.5mph at 10 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 92% at 6 AM and 46% being its lowest at 2 PM. Barometric pressure is its highest of 30.16inHg at 9 AM, a lowest point of 29.95inHg at 11 PM with an avg 30.06inHg.
Mchenry, IL Weather – 11-10 – Sunny
60° / 43°
Sunny
Daytime highs will reach 60°F with lows dropping to 43°F in Mchenry, where it will be sunny. There's a very small chance of rainfall, only about 7%. Winds will be light at 10mph and gusts of 24.4mph at 1 AM. The humidity will be on the higher side, averaging about 67%, the maximum being 94% at 2 AM and 35% being its lowest at 2 PM. Barometric pressure is its highest of 30.07inHg at 9 AM, a lowest point of 29.96inHg at 4 PM with an avg 30inHg.
Mchenry, IL Weather – 11-11 – Overcast
51° / 41°
Overcast
Highs will reach 51°F with lows near 41°F in Mchenry, where cloud-filled skies are. There might be light rainfall having a 16% chance with an estimated 0in. Wind will be moderate, blowing around 15mph on average and gusts of 22mph at 10 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 79% at 6 AM and 50% being its lowest at 1 PM. Barometric pressure is its highest of 30.1inHg at 8 PM, a lowest point of 29.94inHg at 3 PM with an avg 30.02inHg.
Mchenry, IL Weather – 11-12 – Partly Cloudy
42° / 33°
Partly Cloudy
It will be cloudy in Mchenry, with a high of 42°F and a low of 33°F. There might be light rainfall having a 22% chance with an estimated 0.01in. Snow is likely with a 30% chance with an estimated 0in. Wind will be moderate, blowing around 18mph on average and gusts of 28mph at 8 AM. The humidity will be on the higher side, averaging about 68%, the maximum being 83% at 6 AM and 55% being its lowest at 3 PM. Barometric pressure is its highest of 30.15inHg at 11 AM, a lowest point of 29.96inHg at 12 AM with an avg 30.08inHg.

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