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


Merriam, IL Weather Forecast Dated: 350 AM Mon Oct 12 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and a stable pattern will dominate.
Monday, October 12, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
92°F 33°C
Sunny
Early-Evening
82°F 28°C
Sunny
Very hot with temperatures reaching 92°F 33°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the SW to the SSW at 11 mph 18 km/h. Gusts up to 25 mph 41 km/h.
Tuesday, October 13, 2026
Mid-Morning
77°F 25°C
Sunny
Mid-Afternoon
95°F 35°C
Sunny
Early-Evening
87°F 31°C
Sunny
Hot and sweltering around 95°F 35°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the SW to the SSW at 11 mph 16 km/h. Gusts up to 21 mph 33 km/h.
Wednesday, October 14, 2026
Mid-Morning
77°F 25°C
Overcast
Mid-Afternoon
83°F 28°C
Light Showers
Early-Evening
74°F 24°C
Overcast
Very warm near 83°F 28°C, though humidity makes it feel like 88°F 31°C, dry early, with showers developing in the afternoon, with increasing humidity and steady pressure. Winds moving from the SW to the ENE at 4 mph 6 km/h.
Thursday, October 15, 2026
Mid-Morning
74°F 23°C
Light Showers
Mid-Afternoon
83°F 28°C
Cloudy
Early-Evening
77°F 25°C
Sunny
Warm and summery around 83°F 28°C (feels like 88°F 31°C), early showers breaking for a drier afternoon, with lower humidity and steady pressure. Winds swinging from the S to the W at 9 mph 14 km/h.
Friday, October 16, 2026
Mid-Morning
56°F 14°C
Sunny
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
53°F 12°C
Sunny
Refreshing around 61°F 16°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure rising. Winds shifting from the NNW to the N at 16 mph 26 km/h. Gusts up to 25 mph 41 km/h.
Saturday, October 17, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
58°F 14°C
Sunny
Early-Evening
49°F 10°C
Sunny
Mildly cool near 58°F 14°C, sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NNE to the ENE at 9 mph 13 km/h.
Sunday, October 18, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
65°F 18°C
Sunny
Early-Evening
58°F 15°C
Sunny
Comfortable at 65°F 18°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds switching from the SE to the SSE at 6 mph 10 km/h.
Monday, October 19, 2026
Mid-Morning
58°F 14°C
Sunny
Mid-Afternoon
74°F 23°C
Sunny
Early-Evening
67°F 19°C
Overcast
Enjoyable around 74°F 23°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds blowing from the S at 11 mph 18 km/h.
Tuesday, October 20, 2026
Mid-Morning
61°F 16°C
Scattered Showers
Mid-Afternoon
61°F 16°C
Light Rain
Early-Evening
61°F 16°C
Light Rain
Refreshing around 61°F 16°C, locally heavy downpours at times, with steady humidity and steady pressure.
Wednesday, October 21, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
76°F 24°C
Sunny
Early-Evening
67°F 20°C
Sunny
Mild with a high of 76°F 24°C, sunny throughout the day, with lower humidity and steady pressure. Winds ESE at 8 mph 13 km/h.
Thursday, October 22, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
78°F 26°C
Partly Cloudy
Early-Evening
71°F 22°C
Sunny
Pleasant near 78°F 26°C, sunny through the afternoon, turning overcast this evening, with steady humidity and steady pressure.
Friday, October 23, 2026
Mid-Morning
67°F 19°C
Cloudy
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
67°F 20°C
Partly Cloudy
Comfortable with temperatures reaching 72°F 22°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds shifting from the SW to the SE at 10 mph 16 km/h. Gusts up to 20 mph 33 km/h.
Saturday, October 24, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
69°F 20°C
Overcast
Early-Evening
62°F 17°C
Sunny
Enjoyable around 69°F 20°C, cloudy in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the ENE to the ESE at 8 mph 13 km/h.
Sunday, October 25, 2026
Mid-Morning
64°F 18°C
Overcast
Mid-Afternoon
76°F 24°C
Overcast
Early-Evening
69°F 21°C
Sunny
Mild temperatures up to 76°F 24°C, overcast in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and barometric pressure falling. Winds switching from the S to the WNW at 18 mph 28 km/h. Gusts up to 32 mph 51 km/h.
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