Kaskaskia River Navigation Pool, IL 14 Day Weather
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Kaskaskia River Navigation Pool, IL Weather Forecast


Kaskaskia River Navigation Pool, IL Weather Forecast Dated: 622 AM Thu Sep 17 2026
Expect a very warm period with plenty of sunshine and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Thursday, September 17, 2026
Mid-Morning
86°F 30°C
Sunny
Mid-Afternoon
98°F 37°C
Partly Cloudy
Early-Evening
91°F 33°C
Cloudy
Very hot with temperatures reaching 98°F 37°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
84°F 29°C
Partly Cloudy
Mid-Afternoon
98°F 37°C
Sunny
Early-Evening
91°F 33°C
Sunny
Hot and sweltering around 98°F 37°C (heat index 101°F 38°C), partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the N to the ESE at 7 mph 11 km/h.
Saturday, September 19, 2026
Mid-Morning
88°F 31°C
Sunny
Mid-Afternoon
101°F 38°C
Overcast
Early-Evening
91°F 33°C
Overcast
Dangerously hot temperatures around 101°F 38°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the WSW to the ESE at 6 mph 9 km/h.
Sunday, September 20, 2026
Mid-Morning
84°F 29°C
Partly Cloudy
Mid-Afternoon
100°F 38°C
Partly Cloudy
Early-Evening
90°F 33°C
Cloudy
Dangerously hot with a high of 100°F 38°C, partly cloudy throughout the day, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
74°F 23°C
Scattered Showers
Very warm with a high of 86°F 30°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the NNE to the S at 8 mph 13 km/h.
Tuesday, September 22, 2026
Mid-Morning
67°F 19°C
Light Fog
Mid-Afternoon
86°F 30°C
Partly Cloudy
Early-Evening
79°F 26°C
Sunny
Warm and summery near 86°F 30°C, cloudy in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and steady pressure.
Wednesday, September 23, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
94°F 34°C
Sunny
Early-Evening
83°F 29°C
Overcast
Hot and sweltering around 94°F 34°C, cloudy through the afternoon, turning overcast this evening, with steady humidity and barometric pressure falling. Winds swinging from the S to the WNW at 10 mph 15 km/h.
Thursday, September 24, 2026
Mid-Morning
62°F 17°C
Overcast
Mid-Afternoon
79°F 26°C
Overcast
Early-Evening
71°F 22°C
Sunny
Enjoyable around 79°F 26°C, overcast in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds shifting from the NW to the NNW at 11 mph 18 km/h. Gusts up to 24 mph 39 km/h.
Friday, September 25, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
65°F 18°C
Sunny
Mild temperatures up to 74°F 23°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NNW to the NNE at 8 mph 14 km/h.
Saturday, September 26, 2026
Mid-Morning
58°F 14°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
66°F 19°C
Sunny
Mild with a high of 75°F 24°C, sunny throughout the day, with lower humidity and steady pressure.
Sunday, September 27, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
71°F 22°C
Sunny
Warm and summery near 82°F 28°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling.
Monday, September 28, 2026
Mid-Morning
67°F 19°C
Overcast
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
75°F 24°C
Sunny
Balmy with temperatures reaching 86°F 30°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds out of the SSW at 7 mph 12 km/h.
Tuesday, September 29, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
89°F 31°C
Sunny
Early-Evening
77°F 25°C
Sunny
Quite warm around 89°F 31°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.
Wednesday, September 30, 2026
Mid-Morning
71°F 21°C
Overcast
Mid-Afternoon
87°F 31°C
Overcast
Early-Evening
78°F 26°C
Sunny
Warm temperatures up to 87°F 31°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds moving from the NE to the ENE at 9 mph 14 km/h.
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