Deer Plain, IL 14 Day Weather - WeatherWorld.com
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Deer Plain, IL Weather Forecast


Deer Plain, IL Weather Forecast Dated: 754 PM Fri Sep 18 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. Isolated storms at times.
Friday, September 18, 2026
Mid-Morning
77°F 25°C
Sunny
Mid-Afternoon
97°F 36°C
Sunny
Early-Evening
87°F 31°C
Sunny
Sizzling hot near 97°F 36°C with a heat index reaching 103°F 39°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. A stray shower or storm late in the day. Winds picking up from NE at 4 mph 6 km/h to NE at 12 mph 19 km/h.
Saturday, September 19, 2026
Mid-Morning
76°F 25°C
Light Showers
Mid-Afternoon
93°F 34°C
Overcast
Early-Evening
88°F 31°C
Overcast
Hot and sweltering around 93°F 34°C, scattered morning showers before drying out later, with lower humidity and barometric pressure falling. Winds switching from the SW to the SE at 7 mph 11 km/h.
Sunday, September 20, 2026
Mid-Morning
78°F 25°C
Scattered Showers
Mid-Afternoon
93°F 34°C
Overcast
Early-Evening
82°F 28°C
Scattered Showers
Sizzling hot with 93°F 34°C, locally heavy downpours at times, with increasing humidity and steady pressure. Winds moving from the N to the NE at 9 mph 14 km/h.
Monday, September 21, 2026
Mid-Morning
69°F 20°C
Scattered Showers
Mid-Afternoon
72°F 22°C
Scattered Showers
Early-Evening
67°F 20°C
Overcast
Mild temperatures up to 72°F 22°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds swinging from the E to the NE at 11 mph 17 km/h.
Tuesday, September 22, 2026
Mid-Morning
62°F 17°C
Overcast
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
64°F 18°C
Overcast
Mild with a high of 69°F 21°C, overcast throughout the day, with lower humidity and steady pressure. Winds shifting from the NE to the NNE at 11 mph 16 km/h.
Wednesday, September 23, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
74°F 24°C
Partly Cloudy
Early-Evening
68°F 20°C
Cloudy
Pleasant near 74°F 24°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds NNE at 10 mph 16 km/h.
Thursday, September 24, 2026
Mid-Morning
61°F 16°C
Cloudy
Mid-Afternoon
73°F 23°C
Overcast
Early-Evening
68°F 20°C
Overcast
Comfortable with temperatures reaching 73°F 23°C, overcast throughout the day, with lower humidity and steady pressure. Winds switching from the NE to the NNE at 8 mph 13 km/h.
Friday, September 25, 2026
Mid-Morning
65°F 19°C
Overcast
Mid-Afternoon
80°F 27°C
Overcast
Early-Evening
73°F 23°C
Overcast
Quite warm around 80°F 27°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds moving from the NE to the ENE at 11 mph 17 km/h. Gusts up to 20 mph 33 km/h.
Saturday, September 26, 2026
Mid-Morning
66°F 19°C
Overcast
Mid-Afternoon
78°F 26°C
Partly Cloudy
Early-Evening
68°F 20°C
Sunny
Mild temperatures up to 78°F 26°C, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling.
Sunday, September 27, 2026
Mid-Morning
67°F 19°C
Partly Cloudy
Mid-Afternoon
85°F 29°C
Partly Cloudy
Early-Evening
77°F 26°C
Sunny
Very warm with a high of 85°F 29°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds swinging from the SSE to the SE at 8 mph 12 km/h.
Monday, September 28, 2026
Mid-Morning
77°F 25°C
Partly Cloudy
Mid-Afternoon
91°F 33°C
Sunny
Early-Evening
83°F 28°C
Sunny
Very hot with temperatures reaching 91°F 33°C, cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds shifting from the S to the SSE at 9 mph 15 km/h.
Tuesday, September 29, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
90°F 32°C
Partly Cloudy
Early-Evening
80°F 27°C
Sunny
Hot and sweltering around 90°F 32°C, cloudy in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds turning from the SSE to the ESE at 7 mph 11 km/h.
Wednesday, September 30, 2026
Mid-Morning
74°F 23°C
Partly Cloudy
Mid-Afternoon
92°F 33°C
Cloudy
Early-Evening
80°F 27°C
Partly Cloudy
Sizzling hot with 92°F 33°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds increasing from the WNW at 2 mph 4 km/h to N at 12 mph 19 km/h. Gusts up to 22 mph 35 km/h.
Thursday, October 1, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
59°F 15°C
Overcast
Mild temperatures up to 68°F 20°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds moving from the NNW to the N at 14 mph 22 km/h. Gusts up to 23 mph 36 km/h.
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