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Flat Lake, WI 14 Day Weather
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Flat Lake, WI Weather Forecast
Flat Lake, WI Weather Forecast Dated: 530 PM Fri Sep 18 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and a stable pattern will dominate.
Friday, September 18, 2026
Mid-Morning
54°F 12°C
Overcast
Mid-Afternoon
60°F 16°C
Scattered Showers
Early-Evening
56°F 13°C
Scattered Showers
Refreshing around 60°F 16°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
52°F 11°C
Light Fog
Mid-Afternoon
54°F 12°C
Overcast
Early-Evening
54°F 13°C
Light Fog
Cool and brisk at 54°F 12°C, overcast throughout the day, with steady humidity and steady pressure.
Sunday, September 20, 2026
Mid-Morning
52°F 11°C
Partly Cloudy
Mid-Afternoon
55°F 13°C
Overcast
Early-Evening
50°F 10°C
Overcast
Chilly near 55°F 13°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds out of the ENE at 13 mph 21 km/h. Gusts up to 22 mph 35 km/h.
Monday, September 21, 2026
Mid-Morning
48°F 9°C
Cloudy
Mid-Afternoon
62°F 17°C
Overcast
Early-Evening
52°F 11°C
Overcast
Cool with a high near 62°F 17°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds switching from the E to the NE at 8 mph 12 km/h.
Tuesday, September 22, 2026
Mid-Morning
46°F 8°C
Cloudy
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
56°F 13°C
Sunny
Refreshing around 63°F 17°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Wednesday, September 23, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
59°F 15°C
Sunny
Mildly cool near 65°F 19°C, sunny throughout the day, with steady humidity and steady pressure.
Thursday, September 24, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
63°F 17°C
Sunny
Comfortable with temperatures reaching 69°F 21°C, sunny throughout the day, with steady humidity and steady pressure.
Friday, September 25, 2026
Mid-Morning
55°F 13°C
Partly Cloudy
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
60°F 16°C
Sunny
Cool with a high near 67°F 19°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Saturday, September 26, 2026
Mid-Morning
53°F 12°C
Light Fog
Mid-Afternoon
58°F 14°C
Overcast
Early-Evening
63°F 17°C
Overcast
Refreshing around 58°F 14°C, cloudy in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds moving from the SSE to the S at 8 mph 12 km/h. Gusts up to 24 mph 38 km/h.
Sunday, September 27, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
69°F 21°C
Sunny
Mild with a high of 73°F 23°C, overcast in the morning, becoming sunny through the afternoon and evening, with increasing humidity and barometric pressure falling. Winds swinging from the S to the SSW at 12 mph 18 km/h. Gusts up to 24 mph 39 km/h.
Monday, September 28, 2026
Mid-Morning
58°F 15°C
Overcast
Mid-Afternoon
74°F 24°C
Partly Cloudy
Early-Evening
71°F 22°C
Scattered Showers
Pleasant near 74°F 24°C, scattered downpours possible, with steady humidity and steady pressure. Winds shifting from the S to the SSE at 7 mph 11 km/h.
Tuesday, September 29, 2026
Mid-Morning
62°F 16°C
Light Showers
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
64°F 18°C
Partly Cloudy
Cool with a high near 64°F 18°C, morning showers, giving way to clearing skies, with lower humidity and steady pressure.
Wednesday, September 30, 2026
Mid-Morning
52°F 11°C
Overcast
Mid-Afternoon
52°F 11°C
Overcast
Early-Evening
46°F 8°C
Overcast
Brisk around 52°F 11°C, overcast throughout the day, with lower humidity and steady pressure. Winds NW at 9 mph 15 km/h.
Thursday, October 1, 2026
Mid-Morning
41°F 5°C
Sunny
Mid-Afternoon
51°F 10°C
Cloudy
Early-Evening
47°F 8°C
Overcast
Cool and brisk at 51°F 10°C, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds switching from the NW to the NNW at 8 mph 14 km/h. Gusts up to 21 mph 34 km/h.
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