Catlin, IL 14 Day Weather - 61817 WeatherWorld.com
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Catlin, IL Weather Forecast


Catlin, IL Weather Forecast Dated: 123 AM Fri Sep 04 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Friday, September 4, 2026
Mid-Morning
80°F 27°C
Overcast
Mid-Afternoon
92°F 33°C
Sunny
Early-Evening
88°F 31°C
Sunny
Sizzling hot near 92°F 33°C with a heat index reaching 99°F 37°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.
Saturday, September 5, 2026
Mid-Morning
79°F 26°C
Overcast
Mid-Afternoon
89°F 32°C
Sunny
Early-Evening
81°F 28°C
Sunny
Quite warm reaching 89°F 32°C, feeling like 97°F 36°C during peak afternoon, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds turning from the W to the NNE at 8 mph 13 km/h.
Sunday, September 6, 2026
Mid-Morning
71°F 21°C
Partly Cloudy
Mid-Afternoon
79°F 26°C
Overcast
Early-Evening
72°F 22°C
Sunny
Enjoyable around 79°F 26°C, partly cloudy in the morning, overcast in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds switching from the ENE to the E at 10 mph 15 km/h.
Monday, September 7, 2026
Mid-Morning
63°F 17°C
Sunny
Mid-Afternoon
76°F 25°C
Sunny
Early-Evening
71°F 22°C
Cloudy
Mild temperatures up to 76°F 25°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds ENE at 9 mph 15 km/h.
Tuesday, September 8, 2026
Mid-Morning
69°F 21°C
Overcast
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
80°F 27°C
Partly Cloudy
Very warm with a high of 86°F 30°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure.
Wednesday, September 9, 2026
Mid-Morning
78°F 26°C
Overcast
Mid-Afternoon
95°F 35°C
Sunny
Early-Evening
83°F 28°C
Sunny
Very hot with a high of 95°F 35°C, feeling closer to 103°F 40°C in the humidity, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds out of the W at 7 mph 12 km/h.
Thursday, September 10, 2026
Mid-Morning
77°F 25°C
Scattered Showers
Mid-Afternoon
85°F 30°C
Overcast
Early-Evening
80°F 27°C
Overcast
Warm and summery around 85°F 30°C (feels like 91°F 33°C), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds shifting from the SSE to the NE at 8 mph 12 km/h.
Friday, September 11, 2026
Mid-Morning
65°F 18°C
Scattered Showers
Mid-Afternoon
74°F 24°C
Overcast
Early-Evening
72°F 22°C
Overcast
Enjoyable around 74°F 24°C, scattered downpours possible, with steady humidity and steady pressure. Winds turning from the E to the ENE at 10 mph 17 km/h. Gusts up to 21 mph 33 km/h.
Saturday, September 12, 2026
Mid-Morning
68°F 20°C
Overcast
Mid-Afternoon
83°F 28°C
Partly Cloudy
Early-Evening
76°F 25°C
Sunny
Warm temperatures up to 83°F 28°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the ESE to the E at 11 mph 17 km/h. Gusts up to 22 mph 35 km/h.
Sunday, September 13, 2026
Mid-Morning
74°F 23°C
Partly Cloudy
Mid-Afternoon
94°F 34°C
Cloudy
Early-Evening
78°F 26°C
Sunny
Sizzling hot near 94°F 34°C with a heat index reaching 98°F 37°C, partly cloudy through the afternoon, turning overcast this evening, with increasing humidity and steady pressure. Winds moving from the SSE to the SSW at 10 mph 16 km/h.
Monday, September 14, 2026
Mid-Morning
78°F 26°C
Overcast
Mid-Afternoon
91°F 33°C
Nearby Thunderstorms
Early-Evening
80°F 27°C
Sunny
Hot and sweltering around 91°F 33°C (heat index 98°F 36°C), locally heavy thunderstorms at times, with steady humidity and steady pressure. Winds swinging from the SW to the SSE at 6 mph 10 km/h.
Tuesday, September 15, 2026
Mid-Morning
75°F 24°C
Scattered Showers
Mid-Afternoon
91°F 33°C
Nearby Thunderstorms
Early-Evening
84°F 29°C
Nearby Thunderstorms
Very hot with a high of 91°F 33°C, feeling closer to 96°F 36°C in the humidity, locally heavy downpours at times, with lower humidity and steady pressure. Winds shifting from the SSW to the WSW at 6 mph 9 km/h.
Wednesday, September 16, 2026
Mid-Morning
76°F 24°C
Sunny
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
77°F 25°C
Sunny
Quite warm around 85°F 29°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NNE to the ENE at 8 mph 12 km/h.
Thursday, September 17, 2026
Mid-Morning
74°F 23°C
Partly Cloudy
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
76°F 24°C
Overcast
Mild temperatures up to 72°F 22°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds switching from the NE to the SE at 12 mph 19 km/h. Gusts up to 25 mph 40 km/h.
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