Blair, IL 14 Day Weather - WeatherWorld.com
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Blair, IL Weather Forecast


Blair, IL Weather Forecast Dated: 214 PM Sun Sep 13 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Sunday, September 13, 2026
Mid-Morning
75°F 24°C
Overcast
Mid-Afternoon
90°F 32°C
Partly Cloudy
Early-Evening
82°F 28°C
Cloudy
Very hot with temperatures reaching 90°F 32°C, overcast in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds turning from the NNW to the NNE at 8 mph 14 km/h.
Monday, September 14, 2026
Mid-Morning
69°F 20°C
Sunny
Mid-Afternoon
88°F 31°C
Cloudy
Early-Evening
82°F 28°C
Overcast
Balmy with temperatures reaching 88°F 31°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the E to the ESE at 11 mph 18 km/h. Gusts up to 20 mph 32 km/h.
Tuesday, September 15, 2026
Mid-Morning
82°F 28°C
Sunny
Mid-Afternoon
100°F 38°C
Overcast
Early-Evening
86°F 30°C
Partly Cloudy
Dangerously hot with a high of 100°F 38°C (heat index near 103°F 40°C), sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds moving from the SSW to the NNE at 12 mph 18 km/h. Gusts up to 20 mph 33 km/h.
Wednesday, September 16, 2026
Mid-Morning
76°F 25°C
Sunny
Mid-Afternoon
100°F 38°C
Partly Cloudy
Early-Evening
84°F 29°C
Overcast
Scorching heat reaching 100°F 38°C, feeling like 103°F 39°C, sunny in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds swinging from the N to the ESE at 8 mph 13 km/h.
Thursday, September 17, 2026
Mid-Morning
79°F 26°C
Scattered Showers
Mid-Afternoon
93°F 34°C
Partly Cloudy
Early-Evening
80°F 27°C
Overcast
Hot and sweltering around 93°F 34°C (heat index 97°F 36°C), scattered downpours possible, with steady humidity and steady pressure. Winds shifting from the NW to the N at 10 mph 17 km/h.
Friday, September 18, 2026
Mid-Morning
74°F 24°C
Light Fog
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
80°F 27°C
Sunny
Warm and summery near 87°F 31°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds turning from the NE to the E at 7 mph 12 km/h.
Saturday, September 19, 2026
Mid-Morning
78°F 25°C
Sunny
Mid-Afternoon
97°F 36°C
Sunny
Early-Evening
89°F 32°C
Overcast
Hot and sweltering around 97°F 36°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling.
Sunday, September 20, 2026
Mid-Morning
73°F 23°C
Overcast
Mid-Afternoon
87°F 31°C
Overcast
Early-Evening
78°F 26°C
Scattered Showers
Quite warm reaching 87°F 31°C, feeling like 90°F 32°C during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. Winds switching from the SE to the SSW at 9 mph 14 km/h.
Monday, September 21, 2026
Mid-Morning
73°F 23°C
Light Fog
Mid-Afternoon
76°F 25°C
Light Showers
Early-Evening
69°F 20°C
Light Showers
Mild temperatures up to 76°F 25°C, dry early, with showers continuing through afternoon and evening, with steady humidity and steady pressure. Winds moving from the SW to the NW at 11 mph 17 km/h.
Tuesday, September 22, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
57°F 14°C
Overcast
Mildly cool near 60°F 16°C, overcast throughout the day, with lower humidity and steady pressure. Winds NW at 15 mph 25 km/h. Gusts up to 22 mph 36 km/h.
Wednesday, September 23, 2026
Mid-Morning
55°F 13°C
Partly Cloudy
Mid-Afternoon
66°F 19°C
Partly Cloudy
Early-Evening
63°F 17°C
Sunny
Comfortable at 66°F 19°C, cloudy in the morning, becoming sunny 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 23 mph 37 km/h.
Thursday, September 24, 2026
Mid-Morning
58°F 14°C
Sunny
Mid-Afternoon
69°F 21°C
Scattered Showers
Early-Evening
64°F 18°C
Overcast
Comfortable with temperatures reaching 69°F 21°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the NNW to the NNE at 9 mph 15 km/h.
Friday, September 25, 2026
Mid-Morning
63°F 17°C
Cloudy
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
66°F 19°C
Sunny
Enjoyable around 74°F 23°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds switching from the NNE to the NE at 7 mph 12 km/h.
Saturday, September 26, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
69°F 21°C
Sunny
Mild temperatures up to 77°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
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