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St. Clair, MN Weather Forecast
St. Clair, MN Weather Forecast Dated: 1126 PM Tue Sep 15 2026
Expect a cool pattern with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Tuesday, September 15, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
71°F 21°C
Sunny
Early-Evening
67°F 19°C
Overcast
Pleasant near 71°F 21°C, overcast in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and barometric pressure rising. Winds turning from the WNW to the NNW at 7 mph 11 km/h.
Wednesday, September 16, 2026
Mid-Morning
58°F 15°C
Partly Cloudy
Mid-Afternoon
75°F 24°C
Overcast
Early-Evening
66°F 19°C
Overcast
Comfortable with temperatures reaching 75°F 24°C, cloudy in the morning, becoming overcast through the afternoon and evening, with increasing humidity and barometric pressure falling. Winds switching from the ESE to the SSE at 8 mph 14 km/h.
Thursday, September 17, 2026
Mid-Morning
64°F 18°C
Overcast
Mid-Afternoon
74°F 23°C
Overcast
Early-Evening
71°F 22°C
Overcast
Enjoyable around 74°F 23°C, overcast throughout the day, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
64°F 18°C
Light Showers
Mid-Afternoon
67°F 19°C
Scattered Showers
Early-Evening
63°F 17°C
Light Showers
Cool with a high near 67°F 19°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds moving from the SE to the ENE at 15 mph 23 km/h. Gusts up to 25 mph 41 km/h.
Saturday, September 19, 2026
Mid-Morning
54°F 12°C
Overcast
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
54°F 12°C
Scattered Showers
Brisk around 55°F 13°C, scattered downpours possible, with steady humidity and steady pressure. Winds out of the NE at 10 mph 16 km/h. Gusts up to 21 mph 33 km/h.
Sunday, September 20, 2026
Mid-Morning
55°F 13°C
Scattered Showers
Mid-Afternoon
56°F 13°C
Scattered Showers
Early-Evening
56°F 13°C
Scattered Showers
Cool and brisk at 56°F 13°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds blowing from the ENE at 10 mph 16 km/h. Gusts up to 22 mph 36 km/h.
Monday, September 21, 2026
Mid-Morning
55°F 13°C
Light Showers
Mid-Afternoon
55°F 13°C
Light Fog
Early-Evening
54°F 12°C
Scattered Showers
Chilly near 55°F 13°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
56°F 13°C
Fog
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
69°F 21°C
Light Showers
Enjoyable around 68°F 20°C, mainly dry until evening showers arrive, with steady humidity and steady pressure.
Wednesday, September 23, 2026
Mid-Morning
65°F 18°C
Fog
Mid-Afternoon
72°F 22°C
Scattered Showers
Early-Evening
67°F 20°C
Scattered Showers
Mild temperatures up to 72°F 22°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the SSE to the N at 8 mph 12 km/h.
Thursday, September 24, 2026
Mid-Morning
55°F 13°C
Heavy Rain
Mid-Afternoon
65°F 18°C
Scattered Showers
Early-Evening
65°F 18°C
Scattered Showers
Mildly cool near 65°F 18°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds easing from NNW 17 mph 27 km/h to NNW 9 mph 14 km/h.
Friday, September 25, 2026
Mid-Morning
56°F 13°C
Sunny
Mid-Afternoon
67°F 20°C
Sunny
Early-Evening
64°F 18°C
Sunny
Comfortable at 67°F 20°C, sunny throughout the day, with steady humidity and steady pressure. Winds moving from the NW to the NNW at 11 mph 17 km/h. Gusts up to 22 mph 36 km/h.
Saturday, September 26, 2026
Mid-Morning
51°F 10°C
Partly Cloudy
Mid-Afternoon
56°F 13°C
Overcast
Early-Evening
54°F 12°C
Overcast
Crisp with a high near 56°F 13°C, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds N at 13 mph 21 km/h.
Sunday, September 27, 2026
Mid-Morning
48°F 9°C
Sunny
Mid-Afternoon
60°F 15°C
Sunny
Early-Evening
56°F 13°C
Sunny
Refreshing around 60°F 15°C, sunny throughout the day, with steady humidity and barometric pressure falling.
Monday, September 28, 2026
Mid-Morning
49°F 9°C
Overcast
Mid-Afternoon
59°F 15°C
Partly Cloudy
Early-Evening
56°F 13°C
Overcast
Mildly cool near 59°F 15°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds shifting from the SW to the SSE at 9 mph 14 km/h.
St. Clair, MN Weather Radar Map
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