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Junction, IL Weather Forecast
Junction, IL Weather Forecast Dated: 747 PM Fri Sep 04 2026
Expect a hot stretch with plenty of sunshine and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.
Friday, September 4, 2026
Mid-Morning
84°F 29°C
Sunny
Mid-Afternoon
96°F 35°C
Sunny
Early-Evening
90°F 33°C
Sunny
Sizzling hot near 96°F 35°C with a heat index reaching 110°F 43°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the SSW to the S at 7 mph 10 km/h.
Saturday, September 5, 2026
Mid-Morning
81°F 27°C
Sunny
Mid-Afternoon
99°F 37°C
Scattered Showers
Early-Evening
82°F 28°C
Sunny
Hot and sweltering around 99°F 37°C (heat index 103°F 40°C), scattered downpours possible, with steady humidity and steady pressure. Winds switching from the SW to the WNW at 10 mph 15 km/h.
Sunday, September 6, 2026
Mid-Morning
78°F 25°C
Sunny
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
80°F 27°C
Partly Cloudy
Quite warm around 88°F 31°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds moving from the NE to the ENE at 8 mph 13 km/h.
Monday, September 7, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
78°F 26°C
Sunny
Warm temperatures up to 86°F 30°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds out of the ENE at 8 mph 13 km/h.
Tuesday, September 8, 2026
Mid-Morning
78°F 26°C
Sunny
Mid-Afternoon
95°F 35°C
Sunny
Early-Evening
88°F 31°C
Overcast
Very hot with a high of 95°F 35°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds shifting from the S to the SSE at 11 mph 17 km/h. Gusts up to 22 mph 35 km/h.
Wednesday, September 9, 2026
Mid-Morning
85°F 29°C
Sunny
Mid-Afternoon
93°F 34°C
Overcast
Early-Evening
86°F 30°C
Partly Cloudy
Very hot with temperatures reaching 93°F 34°C, cloudy through the afternoon, turning sunny this evening, with steady humidity and steady pressure. Winds turning from the SSW to the W at 9 mph 14 km/h.
Thursday, September 10, 2026
Mid-Morning
72°F 22°C
Partly Cloudy
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
79°F 26°C
Overcast
Hot and sweltering around 90°F 32°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling. Winds switching from the NNE to the ENE at 8 mph 12 km/h.
Friday, September 11, 2026
Mid-Morning
65°F 18°C
Sunny
Mid-Afternoon
71°F 22°C
Overcast
Early-Evening
70°F 21°C
Partly Cloudy
Enjoyable around 71°F 22°C, cloudy throughout the day, with lower humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
90°F 32°C
Overcast
Early-Evening
82°F 28°C
Partly Cloudy
Hot temperatures near 90°F 32°C, cloudy through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure.
Sunday, September 13, 2026
Mid-Morning
83°F 29°C
Sunny
Mid-Afternoon
101°F 39°C
Scattered Showers
Early-Evening
93°F 34°C
Sunny
Sweltering heat reaching 101°F 39°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the SW to the SSW at 9 mph 14 km/h.
Monday, September 14, 2026
Mid-Morning
88°F 31°C
Sunny
Mid-Afternoon
106°F 41°C
Sunny
Early-Evening
95°F 35°C
Sunny
Dangerously hot temperatures around 106°F 41°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the SW to the SSW at 8 mph 13 km/h.
Tuesday, September 15, 2026
Mid-Morning
90°F 32°C
Sunny
Mid-Afternoon
106°F 41°C
Sunny
Early-Evening
97°F 36°C
Sunny
Dangerously hot with a high of 106°F 41°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the W to the SSW at 7 mph 11 km/h.
Wednesday, September 16, 2026
Mid-Morning
91°F 33°C
Sunny
Mid-Afternoon
106°F 41°C
Sunny
Early-Evening
97°F 37°C
Sunny
Scorching hot near 106°F 41°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds turning from the SE to the SSE at 10 mph 15 km/h.
Thursday, September 17, 2026
Mid-Morning
88°F 31°C
Sunny
Mid-Afternoon
105°F 40°C
Sunny
Early-Evening
96°F 36°C
Sunny
Sweltering heat reaching 105°F 40°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
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