Weather WorldBoulder Lake, IL 14 Day Weather
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Boulder Lake, IL Weather Forecast
Boulder Lake, IL Weather Forecast Dated: 810 PM Sat Sep 26 2026
Expect a mild stretch with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.
Saturday, September 26, 2026
Mid-Morning
64°F 18°C
Overcast
Mid-Afternoon
78°F 26°C
Overcast
Early-Evening
72°F 23°C
Overcast
Pleasant near 78°F 26°C, overcast throughout the day, with steady humidity and barometric pressure falling.
Sunday, September 27, 2026
Mid-Morning
64°F 18°C
Scattered Showers
Mid-Afternoon
82°F 28°C
Cloudy
Early-Evening
73°F 23°C
Overcast
Balmy with temperatures reaching 82°F 28°C, scattered downpours possible, with steady humidity and steady pressure.
Monday, September 28, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
83°F 29°C
Sunny
Early-Evening
75°F 24°C
Overcast
Quite warm around 83°F 29°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.
Tuesday, September 29, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
89°F 32°C
Sunny
Early-Evening
81°F 27°C
Overcast
Warm temperatures up to 89°F 32°C, overcast in the morning, sunny in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling.
Wednesday, September 30, 2026
Mid-Morning
76°F 24°C
Overcast
Mid-Afternoon
94°F 34°C
Overcast
Early-Evening
87°F 30°C
Overcast
Very hot with a high of 94°F 34°C, overcast throughout the day, with steady humidity and steady pressure. Winds turning from the SSW to the ESE at 7 mph 11 km/h.
Thursday, October 1, 2026
Mid-Morning
76°F 24°C
Overcast
Mid-Afternoon
83°F 28°C
Overcast
Early-Evening
80°F 27°C
Overcast
Warm and summery near 83°F 28°C, overcast throughout the day, with steady humidity and steady pressure. Winds switching from the SW to the ENE at 6 mph 9 km/h.
Friday, October 2, 2026
Mid-Morning
77°F 25°C
Scattered Showers
Mid-Afternoon
81°F 27°C
Partly Cloudy
Early-Evening
75°F 24°C
Light Showers
Warm and summery around 81°F 27°C (feels like 85°F 29°C), periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds moving from the SW to the SSW at 4 mph 6 km/h.
Saturday, October 3, 2026
Mid-Morning
76°F 25°C
Light Showers
Mid-Afternoon
78°F 25°C
Light Showers
Early-Evening
73°F 23°C
Light Showers
Enjoyable around 78°F 25°C, persistent showers off and on through the day, with increasing humidity and barometric pressure falling. Winds swinging from the SSW to the S at 11 mph 18 km/h. Gusts up to 22 mph 36 km/h.
Sunday, October 4, 2026
Mid-Morning
74°F 24°C
Scattered Showers
Mid-Afternoon
85°F 29°C
Cloudy
Early-Evening
60°F 15°C
Sunny
Warm temperatures up to 85°F 29°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds building from SW at 9 mph 14 km/h to NW at 23 mph 36 km/h. Gusts up to 34 mph 54 km/h.
Monday, October 5, 2026
Mid-Morning
47°F 8°C
Overcast
Mid-Afternoon
57°F 14°C
Partly Cloudy
Early-Evening
52°F 11°C
Sunny
Cool and brisk at 57°F 14°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and barometric pressure rising. Winds turning from the NNW to the SE at 12 mph 19 km/h. Gusts up to 23 mph 37 km/h.
Tuesday, October 6, 2026
Mid-Morning
48°F 9°C
Sunny
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
54°F 13°C
Sunny
Comfortable at 62°F 17°C, sunny throughout the day, with lower humidity and steady pressure. Winds out of the NE at 13 mph 20 km/h.
Wednesday, October 7, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
61°F 16°C
Sunny
Comfortable with temperatures reaching 69°F 21°C, sunny through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds blowing from the NE at 10 mph 17 km/h.
Thursday, October 8, 2026
Mid-Morning
54°F 12°C
Partly Cloudy
Mid-Afternoon
69°F 20°C
Overcast
Early-Evening
67°F 20°C
Overcast
Enjoyable around 69°F 20°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure.
Friday, October 9, 2026
Mid-Morning
65°F 19°C
Light Fog
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
72°F 22°C
Overcast
Mild temperatures up to 72°F 22°C, overcast throughout the day, with lower humidity and steady pressure.
Boulder Lake, IL Weather Radar Map
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