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Dewey, IL 14 Day Weather - 61840 WeatherWorld.com
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Dewey, IL Weather Forecast
Dewey, IL Weather Forecast Dated: 1245 PM Sun Sep 20 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. generally humid conditions and no major pressure swings will dominate.
Sunday, September 20, 2026
Mid-Morning
72°F 22°C
Overcast
Mid-Afternoon
78°F 26°C
Scattered Showers
Early-Evening
65°F 18°C
Cloudy
Pleasant near 78°F 26°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds picking up from ENE at 6 mph 10 km/h to NNE at 15 mph 24 km/h. Gusts up to 26 mph 42 km/h.
Monday, September 21, 2026
Mid-Morning
59°F 15°C
Scattered Showers
Mid-Afternoon
67°F 19°C
Overcast
Early-Evening
62°F 17°C
Overcast
Mildly cool near 67°F 19°C, scattered downpours possible, with lower humidity and steady pressure. Winds blowing from the E at 11 mph 18 km/h.
Tuesday, September 22, 2026
Mid-Morning
54°F 12°C
Scattered Showers
Mid-Afternoon
61°F 16°C
Overcast
Early-Evening
61°F 16°C
Overcast
Comfortable at 61°F 16°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds NE at 11 mph 18 km/h.
Wednesday, September 23, 2026
Mid-Morning
58°F 14°C
Cloudy
Mid-Afternoon
62°F 17°C
Scattered Showers
Early-Evening
58°F 15°C
Scattered Showers
Cool with a high near 62°F 17°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the NE at 12 mph 20 km/h. Gusts up to 21 mph 34 km/h.
Thursday, September 24, 2026
Mid-Morning
56°F 13°C
Sunny
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
62°F 17°C
Overcast
Refreshing around 65°F 18°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the ENE at 11 mph 18 km/h.
Friday, September 25, 2026
Mid-Morning
58°F 15°C
Overcast
Mid-Afternoon
68°F 20°C
Light Showers
Early-Evening
66°F 19°C
Scattered Showers
Pleasant near 68°F 20°C, locally heavy downpours at times, with lower humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
61°F 16°C
Light Fog
Mid-Afternoon
70°F 21°C
Scattered Showers
Early-Evening
69°F 21°C
Overcast
Comfortable with temperatures reaching 70°F 21°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the ENE to the E at 6 mph 9 km/h.
Sunday, September 27, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
67°F 20°C
Sunny
Enjoyable around 72°F 22°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds out of the SE at 8 mph 13 km/h.
Monday, September 28, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
53°F 12°C
Scattered Showers
Early-Evening
51°F 11°C
Overcast
Brisk around 53°F 12°C, locally heavy downpours at times, with steady humidity and barometric pressure rising. Winds moving from the S to the WNW at 16 mph 25 km/h. Gusts up to 24 mph 39 km/h.
Tuesday, September 29, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
57°F 14°C
Sunny
Early-Evening
54°F 12°C
Overcast
Cool and brisk at 57°F 14°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds swinging from the WNW to the SSE at 6 mph 10 km/h.
Wednesday, September 30, 2026
Mid-Morning
54°F 12°C
Overcast
Mid-Afternoon
66°F 19°C
Partly Cloudy
Early-Evening
60°F 16°C
Sunny
Comfortable at 66°F 19°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with increasing humidity and steady pressure. Winds shifting from the S to the NW at 11 mph 18 km/h. Gusts up to 24 mph 38 km/h.
Thursday, October 1, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
58°F 15°C
Sunny
Cool with a high near 63°F 17°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the WNW to the W at 8 mph 13 km/h.
Friday, October 2, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
58°F 14°C
Sunny
Refreshing around 64°F 18°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds switching from the WNW to the SE at 6 mph 9 km/h.
Saturday, October 3, 2026
Mid-Morning
54°F 12°C
Overcast
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
60°F 15°C
Partly Cloudy
Mildly cool near 64°F 18°C, overcast in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.
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