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Clear Lake, IA Weather Forecast


Clear Lake, IA Weather Forecast Dated: 857 AM Tue Sep 01 2026 (Clear Lake Time)
Expect a hot stretch with a mix of sun and clouds and mostly dry weather over the next two weeks. moderate humidity and no major pressure swings will dominate.
Tuesday, September 1, 2026
Mid-Morning
73°F 23°C
Light Fog
Mid-Afternoon
90°F 32°C
Overcast
Early-Evening
85°F 30°C
Scattered Showers
Very hot with temperatures reaching 90°F 32°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling. Winds turning from the SW to the ESE at 10 mph 16 km/h. Gusts up to 20 mph 32 km/h.
Wednesday, September 2, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
88°F 31°C
Cloudy
Early-Evening
84°F 29°C
Sunny
Balmy with temperatures reaching 88°F 31°C, overcast in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.
Thursday, September 3, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
86°F 30°C
Sunny
Quite warm around 88°F 31°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds switching from the SSE to the SE at 14 mph 22 km/h. Gusts up to 22 mph 36 km/h.
Friday, September 4, 2026
Mid-Morning
78°F 26°C
Sunny
Mid-Afternoon
97°F 36°C
Sunny
Early-Evening
88°F 32°C
Sunny
Hot temperatures near 97°F 36°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds SSE at 13 mph 20 km/h.
Saturday, September 5, 2026
Mid-Morning
73°F 23°C
Scattered Showers
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
76°F 24°C
Sunny
Quite warm reaching 85°F 29°C, feeling like 88°F 31°C during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. Winds swinging from the SE to the ESE at 13 mph 21 km/h. Gusts up to 20 mph 32 km/h.
Sunday, September 6, 2026
Mid-Morning
64°F 18°C
Overcast
Mid-Afternoon
79°F 26°C
Cloudy
Early-Evening
74°F 24°C
Overcast
Pleasant near 79°F 26°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds blowing from the SE at 15 mph 23 km/h. Gusts up to 24 mph 38 km/h.
Monday, September 7, 2026
Mid-Morning
75°F 24°C
Cloudy
Mid-Afternoon
101°F 38°C
Sunny
Early-Evening
99°F 37°C
Sunny
Dangerously hot temperatures around 101°F 38°C, overcast in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds decreasing from SSW 16 mph 26 km/h to SSW 8 mph 13 km/h.
Tuesday, September 8, 2026
Mid-Morning
91°F 33°C
Sunny
Mid-Afternoon
105°F 41°C
Sunny
Early-Evening
91°F 33°C
Sunny
Dangerously hot with a high of 105°F 41°C, sunny throughout the day, with increasing humidity and steady pressure. Winds switching from the WSW to the NNE at 9 mph 14 km/h.
Wednesday, September 9, 2026
Mid-Morning
89°F 31°C
Sunny
Mid-Afternoon
99°F 37°C
Sunny
Early-Evening
84°F 29°C
Sunny
Hot temperatures near 99°F 37°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds moving from the SSW to the NNW at 20 mph 32 km/h. Gusts up to 31 mph 50 km/h.
Thursday, September 10, 2026
Mid-Morning
67°F 19°C
Overcast
Mid-Afternoon
79°F 26°C
Overcast
Early-Evening
76°F 24°C
Sunny
Mild with a high of 79°F 26°C, partly cloudy through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds swinging from the NW to the WNW at 8 mph 13 km/h.
Friday, September 11, 2026
Mid-Morning
69°F 20°C
Sunny
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
79°F 26°C
Sunny
Warm and summery near 83°F 28°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the WNW to the ESE at 7 mph 12 km/h.
Saturday, September 12, 2026
Mid-Morning
67°F 19°C
Overcast
Mid-Afternoon
89°F 32°C
Partly Cloudy
Early-Evening
79°F 27°C
Sunny
Balmy with temperatures reaching 89°F 32°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds blowing from the S at 10 mph 17 km/h. Gusts up to 28 mph 45 km/h.
Sunday, September 13, 2026
Mid-Morning
76°F 24°C
Scattered Showers
Mid-Afternoon
77°F 25°C
Light Showers
Early-Evening
72°F 22°C
Light Showers
Enjoyable around 77°F 25°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds switching from the SSW to the WSW at 16 mph 25 km/h. Gusts up to 26 mph 43 km/h.
Monday, September 14, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
67°F 20°C
Sunny
Mild temperatures up to 70°F 21°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds moving from the NW to the WSW at 8 mph 14 km/h.
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