Frog Lake, IL 14 Day Weather
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Frog Lake, IL Weather Forecast


Frog Lake, IL Weather Forecast Dated: 914 AM Thu Sep 17 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Thursday, September 17, 2026
Mid-Morning
75°F 24°C
Light Showers
Mid-Afternoon
90°F 32°C
Partly Cloudy
Early-Evening
80°F 27°C
Sunny
Sizzling hot near 90°F 32°C with a heat index reaching 95°F 35°C, early showers breaking for a drier afternoon, with steady humidity and steady pressure. Winds turning from the WSW to the N at 10 mph 16 km/h.
Friday, September 18, 2026
Mid-Morning
68°F 20°C
Scattered Showers
Mid-Afternoon
82°F 28°C
Scattered Showers
Early-Evening
80°F 27°C
Scattered Showers
Quite warm reaching 82°F 28°C, feeling like 86°F 30°C during peak afternoon, scattered downpours possible, with steady humidity and barometric pressure falling. Winds switching from the ENE to the SE at 10 mph 16 km/h.
Saturday, September 19, 2026
Mid-Morning
74°F 23°C
Overcast
Mid-Afternoon
77°F 25°C
Overcast
Early-Evening
76°F 25°C
Cloudy
Enjoyable around 77°F 25°C, overcast throughout the day, with steady humidity and steady pressure. Winds moving from the WNW to the WSW at 7 mph 11 km/h.
Sunday, September 20, 2026
Mid-Morning
74°F 23°C
Scattered Showers
Mid-Afternoon
78°F 26°C
Partly Cloudy
Early-Evening
71°F 22°C
Overcast
Mild temperatures up to 78°F 26°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds picking up from ENE at 3 mph 5 km/h to NE at 11 mph 17 km/h.
Monday, September 21, 2026
Mid-Morning
61°F 16°C
Light Showers
Mid-Afternoon
67°F 19°C
Scattered Showers
Early-Evening
65°F 18°C
Overcast
Refreshing around 67°F 19°C, scattered downpours possible, with steady humidity and steady pressure. Winds shifting from the E to the NW at 7 mph 11 km/h.
Tuesday, September 22, 2026
Mid-Morning
61°F 16°C
Light Fog
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
69°F 20°C
Sunny
Pleasant near 72°F 22°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the WNW to the SSE at 4 mph 7 km/h.
Wednesday, September 23, 2026
Mid-Morning
70°F 21°C
Sunny
Mid-Afternoon
69°F 21°C
Light Showers
Early-Evening
63°F 17°C
Scattered Showers
Comfortable with temperatures reaching 69°F 21°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds switching from the SSW to the WNW at 12 mph 18 km/h. Gusts up to 27 mph 43 km/h.
Thursday, September 24, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
66°F 19°C
Sunny
Early-Evening
58°F 15°C
Sunny
Cool with a high near 66°F 19°C, sunny throughout the day, with steady humidity and steady pressure. Winds moving from the WNW to the NW at 10 mph 16 km/h.
Friday, September 25, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
58°F 15°C
Sunny
Refreshing around 64°F 18°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the NW to the ESE at 6 mph 10 km/h.
Saturday, September 26, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
63°F 18°C
Sunny
Mild with a high of 69°F 21°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling.
Sunday, September 27, 2026
Mid-Morning
58°F 15°C
Partly Cloudy
Mid-Afternoon
76°F 24°C
Sunny
Early-Evening
69°F 21°C
Overcast
Pleasant near 76°F 24°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds shifting from the S to the SSE at 9 mph 15 km/h.
Monday, September 28, 2026
Mid-Morning
63°F 17°C
Overcast
Mid-Afternoon
81°F 27°C
Overcast
Early-Evening
74°F 24°C
Overcast
Balmy with temperatures reaching 81°F 27°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the SSW to the SSE at 5 mph 8 km/h.
Tuesday, September 29, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
76°F 24°C
Overcast
Early-Evening
69°F 21°C
Overcast
Enjoyable around 76°F 24°C, cloudy in the morning, becoming overcast through the afternoon and evening, with increasing humidity and steady pressure. Winds switching from the SSW to the NNE at 8 mph 12 km/h.
Wednesday, September 30, 2026
Mid-Morning
62°F 16°C
Partly Cloudy
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
67°F 19°C
Overcast
Mild temperatures up to 73°F 23°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds moving from the NE to the ENE at 11 mph 17 km/h.
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