Upper Post Lake, WI 14 Day Weather
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Upper Post Lake, WI Weather Forecast


Upper Post Lake, WI Weather Forecast Dated: 1234 AM Sun Sep 13 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.
Sunday, September 13, 2026
Mid-Morning
48°F 9°C
Overcast
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
53°F 12°C
Sunny
Refreshing around 59°F 15°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds turning from the NW to the N at 6 mph 10 km/h.
Monday, September 14, 2026
Mid-Morning
50°F 10°C
Cloudy
Mid-Afternoon
57°F 14°C
Overcast
Early-Evening
52°F 11°C
Light Rain
Cool and brisk at 57°F 14°C, mainly dry until evening showers arrive, with increasing humidity and barometric pressure falling. Winds building from SSE at 5 mph 8 km/h to SSE at 14 mph 23 km/h. Gusts up to 34 mph 56 km/h.
Tuesday, September 15, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
61°F 16°C
Overcast
Early-Evening
59°F 15°C
Overcast
Comfortable at 61°F 16°C, overcast throughout the day, with lower humidity and barometric pressure rising. Winds moving from the W to the N at 6 mph 9 km/h.
Wednesday, September 16, 2026
Mid-Morning
52°F 11°C
Overcast
Mid-Afternoon
62°F 16°C
Overcast
Early-Evening
61°F 16°C
Overcast
Cool with a high near 62°F 16°C, overcast throughout the day, with steady humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
51°F 11°C
Scattered Showers
Mid-Afternoon
57°F 14°C
Overcast
Early-Evening
58°F 14°C
Overcast
Brisk around 57°F 14°C, scattered downpours possible, with lower humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
49°F 9°C
Fog
Mid-Afternoon
60°F 16°C
Sunny
Early-Evening
55°F 13°C
Sunny
Mildly cool near 60°F 16°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Saturday, September 19, 2026
Mid-Morning
52°F 11°C
Sunny
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
60°F 16°C
Sunny
Comfortable at 65°F 18°C, sunny throughout the day, with steady humidity and steady pressure.
Sunday, September 20, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
63°F 17°C
Cloudy
Cool with a high near 67°F 19°C, cloudy through the afternoon, turning sunny this evening, with increasing humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
56°F 14°C
Light Fog
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
61°F 16°C
Sunny
Refreshing around 65°F 18°C, cloudy in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds swinging from the SSW to the S at 7 mph 11 km/h.
Tuesday, September 22, 2026
Mid-Morning
54°F 12°C
Light Fog
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
64°F 18°C
Overcast
Mildly cool near 64°F 18°C, overcast throughout the day, with steady humidity and steady pressure. Winds shifting from the S to the SE at 6 mph 9 km/h.
Wednesday, September 23, 2026
Mid-Morning
58°F 15°C
Light Fog
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
68°F 20°C
Scattered Showers
Pleasant near 69°F 21°C, scattered downpours possible, with steady humidity and steady pressure. Winds turning from the SW to the SSW at 6 mph 10 km/h.
Thursday, September 24, 2026
Mid-Morning
61°F 16°C
Light Fog
Mid-Afternoon
73°F 23°C
Cloudy
Early-Evening
72°F 22°C
Sunny
Comfortable with temperatures reaching 73°F 23°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and steady pressure.
Friday, September 25, 2026
Mid-Morning
66°F 19°C
Cloudy
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
47°F 9°C
Overcast
Refreshing around 64°F 18°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds picking up from ENE at 4 mph 6 km/h to NNW at 13 mph 21 km/h. Gusts up to 25 mph 40 km/h.
Saturday, September 26, 2026
Mid-Morning
35°F 2°C
Sunny
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
72°F 23°C
Sunny
Mildly cool near 65°F 18°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds moving from the ESE to the SSW at 9 mph 13 km/h. Gusts up to 24 mph 39 km/h.
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