Percival, IL 14 Day Weather
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Percival, IL Weather Forecast


Percival, IL Weather Forecast Dated: 1021 AM Sun Sep 20 2026
Expect a mild stretch 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 20, 2026
Mid-Morning
78°F 26°C
Overcast
Mid-Afternoon
93°F 34°C
Partly Cloudy
Early-Evening
77°F 25°C
Sunny
Very hot with temperatures reaching 93°F 34°C, overcast in the morning, becoming cloudy through the afternoon and evening, with increasing humidity and steady pressure. Winds turning from the W to the NE at 13 mph 20 km/h. Gusts up to 21 mph 34 km/h.
Monday, September 21, 2026
Mid-Morning
62°F 17°C
Light Showers
Mid-Afternoon
73°F 23°C
Overcast
Early-Evening
67°F 19°C
Overcast
Comfortable with temperatures reaching 73°F 23°C, scattered morning showers before drying out later, with lower humidity and steady pressure. Winds blowing from the NE at 10 mph 15 km/h.
Tuesday, September 22, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
64°F 18°C
Scattered Showers
Enjoyable around 69°F 21°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the ENE to the NE at 12 mph 20 km/h. Gusts up to 21 mph 34 km/h.
Wednesday, September 23, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
72°F 22°C
Sunny
Early-Evening
62°F 17°C
Cloudy
Mild temperatures up to 72°F 22°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds swinging from the NE to the NNE at 12 mph 19 km/h.
Thursday, September 24, 2026
Mid-Morning
59°F 15°C
Partly Cloudy
Mid-Afternoon
73°F 23°C
Partly Cloudy
Early-Evening
66°F 19°C
Cloudy
Mild with a high of 73°F 23°C, cloudy in the morning, partly cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds shifting from the NE to the ENE at 12 mph 20 km/h.
Friday, September 25, 2026
Mid-Morning
59°F 15°C
Light Showers
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
64°F 18°C
Scattered Showers
Mildly cool near 64°F 18°C, locally heavy downpours at times, with steady humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
62°F 17°C
Light Fog
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
68°F 20°C
Sunny
Comfortable with temperatures reaching 74°F 23°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds ENE at 9 mph 14 km/h.
Sunday, September 27, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
70°F 21°C
Sunny
Enjoyable around 77°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the ESE to the SE at 7 mph 11 km/h.
Monday, September 28, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
58°F 14°C
Scattered Showers
Early-Evening
54°F 12°C
Overcast
Refreshing around 58°F 14°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds moving from the S to the NW at 17 mph 28 km/h. Gusts up to 25 mph 40 km/h.
Tuesday, September 29, 2026
Mid-Morning
49°F 10°C
Sunny
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
57°F 14°C
Sunny
Mildly cool near 62°F 17°C, sunny throughout the day, with lower humidity and steady pressure. Winds swinging from the WNW to the SE at 6 mph 9 km/h.
Wednesday, September 30, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
66°F 19°C
Sunny
Pleasant near 73°F 23°C, partly cloudy in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds shifting from the S to the NW at 11 mph 18 km/h.
Thursday, October 1, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
60°F 16°C
Sunny
Cool with a high near 67°F 19°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NNW to the WNW at 6 mph 9 km/h.
Friday, October 2, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
71°F 21°C
Sunny
Early-Evening
61°F 16°C
Sunny
Enjoyable around 71°F 21°C, sunny throughout the day, with lower humidity and steady pressure. Winds switching from the NW to the SE at 8 mph 12 km/h.
Saturday, October 3, 2026
Mid-Morning
56°F 13°C
Partly Cloudy
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
62°F 17°C
Overcast
Mild temperatures up to 68°F 20°C, overcast throughout the day, with steady humidity and steady pressure.
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