Allerton, IL 14 Day Weather - 61810 WeatherWorld.com
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Allerton, IL Weather Forecast


Allerton, IL Weather Forecast Dated: 245 AM Fri Sep 18 2026
Expect a mild stretch with more clouds than sun and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Friday, September 18, 2026
Mid-Morning
70°F 21°C
Scattered Showers
Mid-Afternoon
79°F 26°C
Cloudy
Early-Evening
72°F 23°C
Sunny
Pleasant near 79°F 26°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds turning from the ENE to the E at 11 mph 18 km/h.
Saturday, September 19, 2026
Mid-Morning
68°F 20°C
Light Showers
Mid-Afternoon
88°F 31°C
Overcast
Early-Evening
81°F 27°C
Overcast
Quite warm reaching 88°F 31°C, feeling like 92°F 33°C during peak afternoon, scattered morning showers before drying out later, with lower humidity and barometric pressure falling. Winds blowing from the SSW at 2 mph 4 km/h.
Sunday, September 20, 2026
Mid-Morning
75°F 24°C
Cloudy
Mid-Afternoon
83°F 28°C
Overcast
Early-Evening
71°F 22°C
Overcast
Quite warm around 83°F 28°C, overcast through the afternoon, turning cloudy this evening, with increasing humidity and steady pressure. Winds increasing from the SSE at 3 mph 5 km/h to NNE at 11 mph 17 km/h.
Monday, September 21, 2026
Mid-Morning
63°F 17°C
Light Showers
Mid-Afternoon
70°F 21°C
Scattered Showers
Early-Evening
66°F 19°C
Overcast
Mild temperatures up to 70°F 21°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the NE at 8 mph 13 km/h.
Tuesday, September 22, 2026
Mid-Morning
60°F 15°C
Scattered Showers
Mid-Afternoon
61°F 16°C
Scattered Showers
Early-Evening
59°F 15°C
Scattered Showers
Refreshing around 61°F 16°C, scattered downpours possible, with steady humidity and steady pressure. Winds blowing from the NNE at 8 mph 13 km/h.
Wednesday, September 23, 2026
Mid-Morning
59°F 15°C
Light Fog
Mid-Afternoon
67°F 20°C
Scattered Showers
Early-Evening
64°F 18°C
Scattered Showers
Mildly cool near 67°F 20°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds turning from the NNE to the NNW at 7 mph 11 km/h.
Thursday, September 24, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
65°F 18°C
Overcast
Comfortable with temperatures reaching 68°F 20°C, overcast throughout the day, with steady humidity and steady pressure. Winds switching from the WSW to the NNW at 8 mph 12 km/h.
Friday, September 25, 2026
Mid-Morning
63°F 17°C
Light Fog
Mid-Afternoon
70°F 21°C
Partly Cloudy
Early-Evening
62°F 17°C
Overcast
Enjoyable around 70°F 21°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds moving from the SE to the NE at 9 mph 13 km/h.
Saturday, September 26, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
69°F 20°C
Overcast
Early-Evening
61°F 16°C
Sunny
Mild temperatures up to 69°F 20°C, overcast in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds ENE at 7 mph 12 km/h.
Sunday, September 27, 2026
Mid-Morning
60°F 16°C
Cloudy
Mid-Afternoon
76°F 24°C
Sunny
Early-Evening
72°F 22°C
Overcast
Mild with a high of 76°F 24°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling. Winds shifting from the SE to the ESE at 8 mph 13 km/h.
Monday, September 28, 2026
Mid-Morning
69°F 21°C
Partly Cloudy
Mid-Afternoon
85°F 30°C
Sunny
Early-Evening
77°F 25°C
Sunny
Warm and summery near 85°F 30°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the S to the SSE at 10 mph 16 km/h. Gusts up to 22 mph 36 km/h.
Tuesday, September 29, 2026
Mid-Morning
69°F 21°C
Sunny
Mid-Afternoon
84°F 29°C
Sunny
Early-Evening
76°F 25°C
Overcast
Balmy with temperatures reaching 84°F 29°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with increasing humidity and steady pressure. Winds switching from the S to the ESE at 8 mph 13 km/h.
Wednesday, September 30, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
81°F 27°C
Cloudy
Early-Evening
74°F 24°C
Cloudy
Quite warm around 81°F 27°C, overcast in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.
Thursday, October 1, 2026
Mid-Morning
62°F 16°C
Overcast
Mid-Afternoon
61°F 16°C
Overcast
Early-Evening
56°F 14°C
Overcast
Mildly cool near 61°F 16°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds out of the NNW at 14 mph 22 km/h. Gusts up to 23 mph 37 km/h.
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