Chatham, IL 14 Day Weather - 62629 WeatherWorld.com
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Chatham, IL Weather Forecast


Chatham, IL Weather Forecast Dated: 223 PM Tue Sep 08 2026
Expect a mild stretch with a mix of sun and clouds and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate.
Tuesday, September 8, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
87°F 30°C
Overcast
Early-Evening
79°F 26°C
Overcast
Warm and summery near 87°F 30°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling.
Wednesday, September 9, 2026
Mid-Morning
72°F 22°C
Light Rain
Mid-Afternoon
72°F 22°C
Partly Cloudy
Early-Evening
75°F 24°C
Overcast
Comfortable with temperatures reaching 72°F 22°C, scattered morning showers before drying out later, with steady humidity and steady pressure.
Thursday, September 10, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
76°F 24°C
Sunny
Early-Evening
69°F 21°C
Sunny
Enjoyable around 76°F 24°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds turning from the NE to the ENE at 6 mph 10 km/h.
Friday, September 11, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
76°F 25°C
Sunny
Warm temperatures up to 83°F 28°C, sunny throughout the day, with increasing humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
73°F 23°C
Overcast
Mid-Afternoon
85°F 29°C
Overcast
Early-Evening
72°F 22°C
Light Showers
Very warm with a high of 85°F 29°C, mainly dry until evening showers arrive, with increasing humidity and steady pressure. Winds switching from the WSW to the S at 4 mph 7 km/h.
Sunday, September 13, 2026
Mid-Morning
72°F 22°C
Light Fog
Mid-Afternoon
78°F 26°C
Overcast
Early-Evening
77°F 25°C
Overcast
Pleasant near 78°F 26°C, overcast throughout the day, with lower humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
76°F 25°C
Overcast
Early-Evening
78°F 26°C
Sunny
Comfortable with temperatures reaching 76°F 25°C, overcast in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and barometric pressure falling.
Tuesday, September 15, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
75°F 24°C
Scattered Showers
Early-Evening
69°F 20°C
Partly Cloudy
Enjoyable around 75°F 24°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds moving from the W to the NNW at 7 mph 11 km/h.
Wednesday, September 16, 2026
Mid-Morning
66°F 19°C
Sunny
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
68°F 20°C
Sunny
Mild temperatures up to 74°F 23°C, sunny throughout the day, with steady humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
66°F 19°C
Sunny
Mild with a high of 70°F 21°C, sunny throughout the day, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
63°F 17°C
Partly Cloudy
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
61°F 17°C
Overcast
Pleasant near 69°F 21°C, cloudy in the morning, becoming overcast through the afternoon and evening, with increasing humidity and barometric pressure falling. Winds swinging from the SSW to the SE at 6 mph 9 km/h.
Saturday, September 19, 2026
Mid-Morning
57°F 14°C
Scattered Showers
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
56°F 13°C
Overcast
Cool with a high near 59°F 15°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds shifting from the N to the NNE at 10 mph 17 km/h.
Sunday, September 20, 2026
Mid-Morning
51°F 10°C
Sunny
Mid-Afternoon
61°F 16°C
Overcast
Early-Evening
57°F 14°C
Sunny
Refreshing around 61°F 16°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and barometric pressure falling.
Monday, September 21, 2026
Mid-Morning
56°F 13°C
Sunny
Mid-Afternoon
69°F 21°C
Sunny
Early-Evening
64°F 18°C
Sunny
Mild temperatures up to 69°F 21°C, sunny throughout the day, with steady humidity and steady pressure.
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