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Allegan, MI Weather Tomorrow

See what tomorrow's weather has in store for Allegan with a reliable 5 day forecast featuring 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 for the Allegan area and around Allegan county, Michigan.
Updated: Fri Sep 11th 2026 1:00 PM EDT
Allegan, MI Weather – 9-11 – Sunny
83° / 51°
Sunny
Highs will reach 83°F with lows near 51°F in Allegan, where a sunny day is. There's a very small chance of rainfall, only about 4%. Winds will be light at 6mph and gusts of 12.3mph at 2 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 66% at 10 PM and 30% being its lowest at 5 PM. Barometric pressure is its highest of 30.01inHg at 2 PM, a lowest point of 29.92inHg at 7 PM with an avg 29.95inHg.
Allegan, MI Weather – 9-12 – Sunny
85° / 62°

Weather Tomorrow

Sunny
In Allegan, bright and sunny conditions with highs near 85°F and lows around 62°F. There's a very small chance of rainfall, only about 8%. Wind will be moderate, blowing around 14mph on average and gusts of 16.1mph at 7 PM. The humidity will be on the higher side, averaging about 70%, the maximum being 97% at 7 AM and 38% being its lowest at 4 PM. Barometric pressure is its highest of 29.94inHg at 1 AM, a lowest point of 29.84inHg at 4 PM with an avg 29.9inHg.
Allegan, MI Weather – 9-13 – Overcast
79° / 59°
Overcast
Skies will be overcast in Allegan, with a high of 79°F and a low of 59°F. There's a moderate 41% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 15mph on average and gusts of 23mph at 4 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 98% at 7 AM and 37% being its lowest at 3 PM. Barometric pressure is its highest of 30.14inHg at 11 PM, a lowest point of 29.91inHg at 12 AM with an avg 30inHg.
Allegan, MI Weather – 9-14 – Overcast
75° / 52°
Overcast
Highs will reach 75°F with lows near 52°F in Allegan, where overcast is. There's a moderate 40% chance of rainfall with an estimated 0.02in. Wind will be moderate, blowing around 17mph on average and gusts of 36mph at 11 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 80% at 2 AM and 41% being its lowest at 2 PM. Barometric pressure is its highest of 30.23inHg at 8 AM, a lowest point of 30.01inHg at 10 PM with an avg 30.14inHg.
Allegan, MI Weather – 9-15 – Light Rain Shower
80° / 65°
Light Rain Shower
In Allegan, it will rain at times with highs near 80°F and lows around 65°F. The chance of rain is 78% with an estimated 0.17in. Wind will be moderate, blowing around 19mph on average and gusts of 45.2mph at 3 AM. High humidity with average of 81% is anticipated, the maximum being 96% at 11 PM and 60% being its lowest at 5 PM. Barometric pressure is its highest of 30.13inHg at 10 PM, a lowest point of 29.91inHg at 5 AM with an avg 30.02inHg.
Allegan, MI Weather – 9-16 – Scattered Showers
72° / 61°
Scattered Showers
In Allegan, passing showers are likely with a high near 72°F and a low around 61°F. The chance of rain is 89% with an estimated 0.19in. Wind will be moderate, blowing around 12mph on average and gusts of 17.4mph at 8 PM. High humidity with average of 93% is anticipated, the maximum being 98% at 8 AM and 85% being its lowest at 2 PM. Barometric pressure is its highest of 30.18inHg at 8 PM, a lowest point of 30.1inHg at 8 AM with an avg 30.15inHg.

Currently

Sunny 78°F
30.03 inHg.
Barometer
40%
Humidity
SE 9.4 mph
Wind
Sunny

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