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St Clair County, MI 14 Day Weather - WeatherWorld.com
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St Clair County, MI Weather Forecast
St Clair County, MI Weather Forecast Dated: 519 PM Fri Sep 04 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Friday, September 4, 2026
Mid-Morning
68°F 20°C
Fog
Mid-Afternoon
78°F 26°C
Drizzle
Early-Evening
77°F 25°C
Drizzle
Pleasant near 78°F 26°C, drier morning followed by showers lasting through evening, with lower humidity and steady pressure.
Saturday, September 5, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
66°F 19°C
Sunny
Comfortable with temperatures reaching 74°F 23°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the NE to the N at 12 mph 19 km/h. Gusts up to 20 mph 32 km/h.
Sunday, September 6, 2026
Mid-Morning
64°F 18°C
Scattered Showers
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
68°F 20°C
Partly Cloudy
Enjoyable around 74°F 23°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds switching from the NNE to the NE at 10 mph 16 km/h.
Monday, September 7, 2026
Mid-Morning
60°F 16°C
Partly Cloudy
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
69°F 21°C
Sunny
Mild temperatures up to 75°F 24°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure.
Tuesday, September 8, 2026
Mid-Morning
63°F 17°C
Overcast
Mid-Afternoon
76°F 25°C
Overcast
Early-Evening
73°F 23°C
Overcast
Mild with a high of 76°F 25°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds moving from the ESE to the SSE at 10 mph 16 km/h. Gusts up to 20 mph 32 km/h.
Wednesday, September 9, 2026
Mid-Morning
76°F 24°C
Light Showers
Mid-Afternoon
85°F 30°C
Overcast
Early-Evening
76°F 25°C
Overcast
Warm and summery near 85°F 30°C, morning showers, giving way to clearing skies, with lower humidity and steady pressure. Winds swinging from the SW to the WNW at 19 mph 30 km/h. Gusts up to 31 mph 49 km/h.
Thursday, September 10, 2026
Mid-Morning
61°F 16°C
Scattered Showers
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
57°F 14°C
Cloudy
Comfortable at 59°F 15°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds shifting from the NW to the N at 11 mph 17 km/h.
Friday, September 11, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
59°F 15°C
Sunny
Cool with a high near 64°F 18°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds turning from the NNW to the NE at 9 mph 14 km/h.
Saturday, September 12, 2026
Mid-Morning
55°F 13°C
Partly Cloudy
Mid-Afternoon
66°F 19°C
Overcast
Early-Evening
66°F 19°C
Overcast
Refreshing around 66°F 19°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds picking up from SE at 5 mph 9 km/h to S at 13 mph 21 km/h.
Sunday, September 13, 2026
Mid-Morning
60°F 15°C
Scattered Showers
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
76°F 24°C
Sunny
Mild with a high of 72°F 22°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling. Winds tapering down from SSW 18 mph 29 km/h to SSE 6 mph 10 km/h.
Monday, September 14, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
77°F 25°C
Sunny
Warm and summery near 83°F 28°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Tuesday, September 15, 2026
Mid-Morning
70°F 21°C
Light Showers
Mid-Afternoon
81°F 27°C
Sunny
Early-Evening
82°F 28°C
Sunny
Very warm near 81°F 27°C, though humidity makes it feel like 85°F 29°C, morning showers, giving way to clearing skies, with lower humidity and barometric pressure falling. Winds swinging from the E to the SSW at 10 mph 16 km/h.
Wednesday, September 16, 2026
Mid-Morning
83°F 29°C
Sunny
Mid-Afternoon
100°F 38°C
Sunny
Early-Evening
93°F 34°C
Sunny
Scorching hot near 100°F 38°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the WSW to the WNW at 11 mph 18 km/h. Gusts up to 20 mph 32 km/h.
Thursday, September 17, 2026
Mid-Morning
83°F 28°C
Sunny
Mid-Afternoon
98°F 37°C
Sunny
Early-Evening
92°F 33°C
Partly Cloudy
Hot temperatures near 98°F 37°C, sunny throughout the day, with lower humidity and steady pressure.
St Clair County, MI Weather Radar Map
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