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Firth Lake, WI Weather Forecast
Firth Lake, WI Weather Forecast Dated: 436 PM Tue Sep 22 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 22, 2026
Mid-Morning
47°F 9°C
Cloudy
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
56°F 14°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. Winds turning from the E to the SE at 7 mph 11 km/h.
Wednesday, September 23, 2026
Mid-Morning
48°F 9°C
Sunny
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
60°F 16°C
Sunny
Mildly cool near 66°F 19°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the ESE to the SE at 8 mph 13 km/h. Gusts up to 20 mph 32 km/h.
Thursday, September 24, 2026
Mid-Morning
51°F 11°C
Overcast
Mid-Afternoon
62°F 17°C
Overcast
Early-Evening
60°F 16°C
Overcast
Comfortable at 62°F 17°C, overcast throughout the day, with steady humidity and steady pressure. Winds moving from the SE to the SSE at 4 mph 6 km/h.
Friday, September 25, 2026
Mid-Morning
55°F 13°C
Partly Cloudy
Mid-Afternoon
69°F 20°C
Overcast
Early-Evening
66°F 19°C
Overcast
Mild temperatures up to 69°F 20°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds out of the SSE at 8 mph 12 km/h.
Saturday, September 26, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
54°F 12°C
Scattered Showers
Refreshing around 65°F 18°C, scattered downpours possible, with increasing humidity and steady pressure. Winds shifting from the SE to the SSE at 10 mph 16 km/h. Gusts up to 24 mph 39 km/h.
Sunday, September 27, 2026
Mid-Morning
53°F 12°C
Light Rain
Mid-Afternoon
59°F 15°C
Scattered Showers
Early-Evening
59°F 15°C
Scattered Showers
Mildly cool near 59°F 15°C, locally heavy downpours at times, with steady humidity and steady pressure.
Monday, September 28, 2026
Mid-Morning
58°F 15°C
Fog
Mid-Afternoon
66°F 19°C
Cloudy
Early-Evening
64°F 18°C
Overcast
Comfortable at 66°F 19°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds turning from the SSE to the S at 10 mph 16 km/h. Gusts up to 21 mph 33 km/h.
Tuesday, September 29, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
66°F 19°C
Overcast
Enjoyable around 69°F 21°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the SSW to the S at 11 mph 18 km/h. Gusts up to 26 mph 41 km/h.
Wednesday, September 30, 2026
Mid-Morning
64°F 18°C
Light Rain
Mid-Afternoon
65°F 18°C
Scattered Showers
Early-Evening
60°F 16°C
Light Fog
Refreshing around 65°F 18°C, locally heavy downpours at times, with steady humidity and barometric pressure rising. Winds moving from the SSW to the NE at 11 mph 17 km/h.
Thursday, October 1, 2026
Mid-Morning
59°F 15°C
Fog
Mid-Afternoon
59°F 15°C
Light Showers
Early-Evening
58°F 14°C
Light Showers
Mildly cool near 59°F 15°C, drier morning followed by showers lasting through evening, with steady humidity and steady pressure.
Friday, October 2, 2026
Mid-Morning
54°F 12°C
Fog
Mid-Afternoon
58°F 14°C
Scattered Showers
Early-Evening
55°F 13°C
Scattered Showers
Comfortable at 58°F 14°C, scattered downpours possible, with steady humidity and steady pressure.
Saturday, October 3, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
54°F 12°C
Scattered Showers
Early-Evening
52°F 11°C
Light Showers
Crisp with a high near 54°F 12°C, locally heavy downpours at times, with steady humidity and steady pressure.
Sunday, October 4, 2026
Mid-Morning
49°F 10°C
Partly Cloudy
Mid-Afternoon
58°F 14°C
Cloudy
Early-Evening
53°F 12°C
Cloudy
Refreshing around 58°F 14°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds WNW at 12 mph 19 km/h.
Monday, October 5, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
56°F 13°C
Sunny
Early-Evening
51°F 11°C
Sunny
Cool and brisk at 56°F 13°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure.
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