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Sims, IL Weather Forecast


Sims, IL Weather Forecast Dated: 1036 PM Wed Sep 02 2026 (Sims Time)
Expect a hot stretch with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Wednesday, September 2, 2026
Mid-Morning
83°F 29°C
Sunny
Mid-Afternoon
99°F 37°C
Sunny
Early-Evening
91°F 33°C
Sunny
Sizzling hot near 99°F 37°C with a heat index reaching 106°F 41°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the SW to the S at 9 mph 15 km/h.
Thursday, September 3, 2026
Mid-Morning
87°F 30°C
Sunny
Mid-Afternoon
102°F 39°C
Partly Cloudy
Early-Evening
94°F 34°C
Overcast
Sweltering heat reaching 102°F 39°C, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds switching from the SW to the SE at 7 mph 10 km/h.
Friday, September 4, 2026
Mid-Morning
88°F 31°C
Sunny
Mid-Afternoon
103°F 39°C
Sunny
Early-Evening
97°F 36°C
Overcast
Dangerously hot temperatures around 103°F 39°C, sunny through the afternoon, turning overcast this evening, with lower humidity and steady pressure.
Saturday, September 5, 2026
Mid-Morning
89°F 32°C
Sunny
Mid-Afternoon
104°F 40°C
Partly Cloudy
Early-Evening
92°F 34°C
Overcast
Dangerously hot with a high of 104°F 40°C, sunny in the morning, partly cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds moving from the WNW to the SSE at 9 mph 14 km/h.
Sunday, September 6, 2026
Mid-Morning
83°F 28°C
Partly Cloudy
Mid-Afternoon
99°F 37°C
Sunny
Early-Evening
87°F 30°C
Sunny
Very hot with a high of 99°F 37°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds out of the NE at 11 mph 18 km/h. Gusts up to 28 mph 44 km/h.
Monday, September 7, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
96°F 36°C
Sunny
Early-Evening
88°F 32°C
Sunny
Very hot with temperatures reaching 96°F 36°C, sunny throughout the day, with lower humidity and steady pressure. Winds blowing from the E at 7 mph 11 km/h. Gusts up to 20 mph 32 km/h.
Tuesday, September 8, 2026
Mid-Morning
84°F 29°C
Sunny
Mid-Afternoon
102°F 39°C
Overcast
Early-Evening
96°F 35°C
Overcast
Scorching heat reaching 102°F 39°C, feeling like 105°F 40°C, cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds turning from the S to the SSE at 11 mph 18 km/h. Gusts up to 23 mph 37 km/h.
Wednesday, September 9, 2026
Mid-Morning
89°F 32°C
Sunny
Mid-Afternoon
105°F 41°C
Sunny
Early-Evening
97°F 36°C
Scattered Showers
Dangerously hot with a high of 105°F 41°C, scattered downpours possible, with lower humidity and steady pressure. Winds switching from the SW to the SSW at 9 mph 14 km/h.
Thursday, September 10, 2026
Mid-Morning
90°F 32°C
Sunny
Mid-Afternoon
102°F 39°C
Sunny
Early-Evening
92°F 33°C
Overcast
Scorching hot near 102°F 39°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and barometric pressure falling. Winds moving from the W to the ESE at 6 mph 10 km/h.
Friday, September 11, 2026
Mid-Morning
83°F 29°C
Sunny
Mid-Afternoon
103°F 39°C
Scattered Showers
Early-Evening
96°F 36°C
Partly Cloudy
Sweltering heat reaching 103°F 39°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling. Winds swinging from the SW to the S at 11 mph 18 km/h. Gusts up to 20 mph 31 km/h.
Saturday, September 12, 2026
Mid-Morning
89°F 32°C
Sunny
Mid-Afternoon
103°F 39°C
Sunny
Early-Evening
96°F 36°C
Sunny
Dangerously hot temperatures around 103°F 39°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the SW to the SSW at 11 mph 18 km/h.
Sunday, September 13, 2026
Mid-Morning
90°F 32°C
Sunny
Mid-Afternoon
104°F 40°C
Sunny
Early-Evening
97°F 36°C
Sunny
Dangerously hot with a high of 104°F 40°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds blowing from the SW at 15 mph 23 km/h. Gusts up to 20 mph 31 km/h.
Monday, September 14, 2026
Mid-Morning
77°F 25°C
Overcast
Mid-Afternoon
91°F 33°C
Overcast
Early-Evening
87°F 31°C
Overcast
Sizzling hot near 91°F 33°C with a heat index reaching 94°F 34°C, overcast through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Tuesday, September 15, 2026
Mid-Morning
78°F 26°C
Sunny
Mid-Afternoon
99°F 37°C
Sunny
Early-Evening
91°F 33°C
Sunny
Hot temperatures near 99°F 37°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds switching from the ESE to the E at 8 mph 14 km/h.
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