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Lone Tree, IL Weather Forecast
Lone Tree, IL Weather Forecast Dated: 1016 AM Wed Sep 09 2026
Expect a very warm period with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.
Wednesday, September 9, 2026
Mid-Morning
72°F 22°C
Rain
Mid-Afternoon
79°F 26°C
Heavy Rain
Early-Evening
75°F 24°C
Scattered Showers
Pleasant near 79°F 26°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Thunderstorms possible in the afternoon and evening. Winds turning from the SSE to the NE at 5 mph 9 km/h.
Thursday, September 10, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
81°F 27°C
Overcast
Early-Evening
75°F 24°C
Sunny
Balmy with temperatures reaching 81°F 27°C, overcast through the afternoon, turning sunny this evening, with lower humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
84°F 29°C
Sunny
Early-Evening
77°F 25°C
Sunny
Quite warm around 84°F 29°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds blowing from the SE at 9 mph 15 km/h.
Saturday, September 12, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
77°F 25°C
Scattered Showers
Warm temperatures up to 86°F 30°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the SSW to the N at 9 mph 14 km/h.
Sunday, September 13, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
85°F 29°C
Overcast
Early-Evening
81°F 27°C
Overcast
Very warm with a high of 85°F 29°C, overcast throughout the day, with lower humidity and steady pressure. Winds swinging from the NE to the SSE at 8 mph 12 km/h.
Monday, September 14, 2026
Mid-Morning
77°F 25°C
Scattered Showers
Mid-Afternoon
96°F 36°C
Overcast
Early-Evening
80°F 26°C
Partly Cloudy
Very hot with a high of 96°F 36°C, feeling closer to 99°F 37°C in the humidity, locally heavy downpours at times, with steady humidity and steady pressure. Winds shifting from the S to the NW at 10 mph 16 km/h.
Tuesday, September 15, 2026
Mid-Morning
60°F 16°C
Light Showers
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
66°F 19°C
Cloudy
Comfortable with temperatures reaching 69°F 21°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure. Winds turning from the SE to the NE at 8 mph 13 km/h.
Wednesday, September 16, 2026
Mid-Morning
63°F 17°C
Scattered Showers
Mid-Afternoon
70°F 21°C
Scattered Showers
Early-Evening
67°F 20°C
Overcast
Enjoyable around 70°F 21°C, scattered downpours possible, with steady humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
60°F 16°C
Light Showers
Mid-Afternoon
68°F 20°C
Light Fog
Early-Evening
66°F 20°C
Scattered Showers
Mild temperatures up to 68°F 20°C, locally heavy downpours at times, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
67°F 19°C
Fog
Mid-Afternoon
79°F 26°C
Scattered Showers
Early-Evening
78°F 26°C
Partly Cloudy
Mild with a high of 79°F 26°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
78°F 26°C
Scattered Showers
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
78°F 26°C
Sunny
Quite warm reaching 87°F 31°C, feeling like 92°F 33°C during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. Winds switching from the SW to the NNW at 9 mph 15 km/h. Gusts up to 20 mph 31 km/h.
Sunday, September 20, 2026
Mid-Morning
70°F 21°C
Light Fog
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
78°F 26°C
Cloudy
Very warm near 82°F 28°C, though humidity makes it feel like 85°F 30°C, partly cloudy through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds moving from the SE to the NE at 8 mph 13 km/h.
Monday, September 21, 2026
Mid-Morning
70°F 21°C
Scattered Showers
Mid-Afternoon
76°F 24°C
Scattered Showers
Early-Evening
71°F 22°C
Light Showers
Enjoyable around 76°F 24°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
70°F 21°C
Light Fog
Mid-Afternoon
78°F 26°C
Light Showers
Early-Evening
72°F 23°C
Partly Cloudy
Mild temperatures up to 78°F 26°C, clouds building with afternoon showers likely, with lower humidity and steady pressure. Winds swinging from the SSE to the WNW at 6 mph 9 km/h.
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