Calvin, IL 14 Day Weather - WeatherWorld.com
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Calvin, IL Weather Forecast


Calvin, IL Weather Forecast Dated: 251 AM Sun Sep 06 2026
Expect a hot 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 6, 2026
Mid-Morning
78°F 25°C
Sunny
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
79°F 26°C
Sunny
Warm and summery near 88°F 31°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds turning from the NE to the ENE at 11 mph 18 km/h. Gusts up to 22 mph 34 km/h.
Monday, September 7, 2026
Mid-Morning
71°F 22°C
Sunny
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
80°F 26°C
Partly Cloudy
Balmy with temperatures reaching 88°F 31°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds blowing from the ENE at 10 mph 15 km/h.
Tuesday, September 8, 2026
Mid-Morning
78°F 26°C
Sunny
Mid-Afternoon
94°F 35°C
Sunny
Early-Evening
88°F 31°C
Sunny
Sizzling hot with 94°F 35°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the S to the SSE at 11 mph 17 km/h.
Wednesday, September 9, 2026
Mid-Morning
84°F 29°C
Sunny
Mid-Afternoon
103°F 39°C
Cloudy
Early-Evening
88°F 31°C
Overcast
Dangerously hot with a high of 103°F 39°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds easing from SSW 16 mph 26 km/h to NW 6 mph 11 km/h.
Thursday, September 10, 2026
Mid-Morning
75°F 24°C
Overcast
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
75°F 24°C
Cloudy
Quite warm reaching 87°F 31°C, feeling like 91°F 33°C during peak afternoon, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds shifting from the SW to the NE at 14 mph 22 km/h. Gusts up to 25 mph 40 km/h.
Friday, September 11, 2026
Mid-Morning
67°F 19°C
Cloudy
Mid-Afternoon
79°F 26°C
Overcast
Early-Evening
75°F 24°C
Overcast
Pleasant near 79°F 26°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds E at 8 mph 13 km/h.
Saturday, September 12, 2026
Mid-Morning
71°F 22°C
Cloudy
Mid-Afternoon
85°F 29°C
Partly Cloudy
Early-Evening
80°F 27°C
Overcast
Balmy with temperatures reaching 85°F 29°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the E to the SE at 6 mph 10 km/h.
Sunday, September 13, 2026
Mid-Morning
80°F 27°C
Light Fog
Mid-Afternoon
96°F 36°C
Sunny
Early-Evening
87°F 31°C
Cloudy
Hot and sweltering around 96°F 36°C (heat index 100°F 38°C), sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds moving from the SSW to the SW at 13 mph 21 km/h. Gusts up to 26 mph 42 km/h.
Monday, September 14, 2026
Mid-Morning
72°F 22°C
Light Showers
Mid-Afternoon
80°F 27°C
Partly Cloudy
Early-Evening
73°F 23°C
Overcast
Warm temperatures up to 80°F 27°C, morning showers, giving way to clearing skies, with lower humidity and steady pressure. Winds swinging from the NNE to the NE at 11 mph 18 km/h. Gusts up to 23 mph 37 km/h.
Tuesday, September 15, 2026
Mid-Morning
62°F 16°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
71°F 22°C
Sunny
Mild with a high of 79°F 26°C, sunny throughout the day, with lower humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
68°F 20°C
Sunny
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
79°F 26°C
Sunny
Warm and summery near 86°F 30°C, sunny through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling.
Thursday, September 17, 2026
Mid-Morning
80°F 27°C
Overcast
Mid-Afternoon
95°F 35°C
Overcast
Early-Evening
88°F 32°C
Overcast
Very hot with a high of 95°F 35°C, feeling closer to 99°F 37°C in the humidity, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds out of the S at 11 mph 18 km/h. Gusts up to 24 mph 39 km/h.
Friday, September 18, 2026
Mid-Morning
84°F 29°C
Partly Cloudy
Mid-Afternoon
98°F 37°C
Scattered Showers
Early-Evening
90°F 33°C
Cloudy
Sizzling hot near 98°F 37°C with a heat index reaching 102°F 39°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the SW to the SSW at 10 mph 16 km/h.
Saturday, September 19, 2026
Mid-Morning
85°F 30°C
Sunny
Mid-Afternoon
97°F 36°C
Sunny
Early-Evening
90°F 32°C
Cloudy
Hot and sweltering around 97°F 36°C (heat index 100°F 38°C), sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the SSW to the SSE at 9 mph 14 km/h.
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