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Decatur, MI Weather Forecast
Decatur, MI Weather Forecast Dated: 1037 AM Thu Sep 10 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Thursday, September 10, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
81°F 27°C
Overcast
Early-Evening
67°F 19°C
Overcast
Warm and summery near 81°F 27°C, overcast throughout the day, with lower humidity and steady pressure. Winds turning from the NNW to the N at 8 mph 12 km/h.
Friday, September 11, 2026
Mid-Morning
60°F 16°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
70°F 22°C
Sunny
Comfortable with temperatures reaching 77°F 25°C, sunny throughout the day, with steady humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
80°F 27°C
Sunny
Early-Evening
75°F 24°C
Partly Cloudy
Quite warm around 80°F 27°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds blowing from the SSW at 8 mph 12 km/h.
Sunday, September 13, 2026
Mid-Morning
68°F 20°C
Overcast
Mid-Afternoon
82°F 28°C
Overcast
Early-Evening
75°F 24°C
Overcast
Warm temperatures up to 82°F 28°C, overcast throughout the day, with lower humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
69°F 21°C
Scattered Showers
Mid-Afternoon
70°F 21°C
Light Showers
Early-Evening
79°F 26°C
Scattered Showers
Mild with a high of 70°F 21°C, scattered downpours possible, with lower humidity and steady pressure. Winds moving from the SE to the SSE at 14 mph 22 km/h. Gusts up to 26 mph 42 km/h.
Tuesday, September 15, 2026
Mid-Morning
76°F 24°C
Scattered Showers
Mid-Afternoon
80°F 27°C
Scattered Showers
Early-Evening
70°F 21°C
Scattered Showers
Very warm near 80°F 27°C, though humidity makes it feel like 83°F 28°C, locally heavy downpours at times, with increasing humidity and barometric pressure rising. Winds swinging from the SSW to the NNW at 9 mph 14 km/h.
Wednesday, September 16, 2026
Mid-Morning
59°F 15°C
Partly Cloudy
Mid-Afternoon
65°F 18°C
Light Showers
Early-Evening
56°F 14°C
Scattered Showers
Comfortable at 65°F 18°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds shifting from the NE to the NNE at 12 mph 19 km/h. Gusts up to 23 mph 37 km/h.
Thursday, September 17, 2026
Mid-Morning
64°F 18°C
Light Showers
Mid-Afternoon
71°F 22°C
Overcast
Early-Evening
61°F 17°C
Overcast
Enjoyable around 71°F 22°C, scattered morning showers before drying out later, with lower humidity and barometric pressure rising. Winds turning from the S to the NNW at 11 mph 18 km/h.
Friday, September 18, 2026
Mid-Morning
48°F 9°C
Sunny
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
53°F 12°C
Sunny
Refreshing around 59°F 15°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the N to the SW at 11 mph 17 km/h.
Saturday, September 19, 2026
Mid-Morning
49°F 9°C
Sunny
Mid-Afternoon
62°F 16°C
Sunny
Early-Evening
56°F 13°C
Sunny
Mildly cool near 62°F 16°C, sunny throughout the day, with steady humidity and steady pressure. Winds moving from the WSW to the SW at 8 mph 12 km/h.
Sunday, September 20, 2026
Mid-Morning
50°F 10°C
Sunny
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
60°F 16°C
Sunny
Comfortable at 65°F 19°C, sunny throughout the day, with lower humidity and steady pressure. Winds SW at 8 mph 13 km/h.
Monday, September 21, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
69°F 21°C
Cloudy
Early-Evening
68°F 20°C
Scattered Showers
Comfortable with temperatures reaching 69°F 21°C, locally heavy downpours at times, with lower humidity and barometric pressure falling. Winds out of the S at 16 mph 26 km/h. Gusts up to 30 mph 47 km/h.
Tuesday, September 22, 2026
Mid-Morning
63°F 17°C
Light Showers
Mid-Afternoon
60°F 15°C
Scattered Showers
Early-Evening
61°F 16°C
Scattered Showers
Refreshing around 60°F 15°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds turning from the SW to the SSW at 10 mph 15 km/h. Gusts up to 20 mph 32 km/h.
Wednesday, September 23, 2026
Mid-Morning
57°F 14°C
Scattered Showers
Mid-Afternoon
60°F 15°C
Scattered Showers
Early-Evening
57°F 14°C
Scattered Showers
Mildly cool near 60°F 15°C, scattered downpours possible, with lower humidity and steady pressure. Winds switching from the SSW to the N at 10 mph 16 km/h.
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