Diffenbaugh-Harmon Park, IL 14 Day Weather
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Diffenbaugh-Harmon Park, IL Weather Forecast


Diffenbaugh-Harmon Park, IL Weather Forecast Dated: 148 AM Fri Sep 25 2026
Expect a cool pattern with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Friday, September 25, 2026
Mid-Morning
61°F 16°C
Drizzle
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
59°F 15°C
Overcast
Refreshing around 60°F 16°C, early showers breaking for a drier afternoon, with steady humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
56°F 14°C
Overcast
Mid-Afternoon
53°F 12°C
Light Rain
Early-Evening
56°F 14°C
Drizzle
Cool and brisk at 53°F 12°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and steady pressure.
Sunday, September 27, 2026
Mid-Morning
57°F 14°C
Cloudy
Mid-Afternoon
66°F 19°C
Partly Cloudy
Early-Evening
64°F 18°C
Sunny
Comfortable at 66°F 19°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.
Monday, September 28, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
68°F 20°C
Cloudy
Mild temperatures up to 71°F 22°C, overcast in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds out of the SSE at 8 mph 12 km/h.
Tuesday, September 29, 2026
Mid-Morning
59°F 15°C
Light Rain
Mid-Afternoon
57°F 14°C
Light Rain
Early-Evening
57°F 14°C
Light Rain
Brisk around 57°F 14°C, persistent showers off and on through the day, with increasing humidity and steady pressure.
Wednesday, September 30, 2026
Mid-Morning
62°F 17°C
Light Showers
Mid-Afternoon
64°F 18°C
Light Showers
Early-Evening
66°F 19°C
Light Showers
Mildly cool near 64°F 18°C, on-and-off showers throughout the day, with steady humidity and steady pressure. Winds switching from the SSE to the SE at 9 mph 15 km/h. Gusts up to 24 mph 38 km/h.
Thursday, October 1, 2026
Mid-Morning
73°F 23°C
Cloudy
Mid-Afternoon
70°F 21°C
Light Showers
Early-Evening
71°F 22°C
Light Showers
Comfortable with temperatures reaching 70°F 21°C, drier morning followed by showers lasting through evening, with increasing humidity and steady pressure. Winds moving from the S to the SSE at 10 mph 15 km/h. Gusts up to 25 mph 40 km/h.
Friday, October 2, 2026
Mid-Morning
71°F 22°C
Light Showers
Mid-Afternoon
73°F 23°C
Light Showers
Early-Evening
64°F 18°C
Scattered Showers
Enjoyable around 73°F 23°C, scattered downpours possible, with steady humidity and steady pressure. Winds swinging from the SSW to the ESE at 11 mph 18 km/h.
Saturday, October 3, 2026
Mid-Morning
58°F 14°C
Scattered Showers
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
65°F 18°C
Overcast
Refreshing around 63°F 17°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds shifting from the NE to the ESE at 4 mph 7 km/h.
Sunday, October 4, 2026
Mid-Morning
67°F 19°C
Light Fog
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
51°F 11°C
Overcast
Mildly cool near 64°F 18°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds increasing from the S at 6 mph 10 km/h to NW at 16 mph 26 km/h. Gusts up to 28 mph 44 km/h.
Monday, October 5, 2026
Mid-Morning
43°F 6°C
Sunny
Mid-Afternoon
51°F 11°C
Sunny
Early-Evening
49°F 9°C
Sunny
Chilly near 51°F 11°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the NW to the WNW at 8 mph 12 km/h.
Tuesday, October 6, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
55°F 13°C
Sunny
Early-Evening
53°F 12°C
Overcast
Crisp with a high near 55°F 13°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the NW to the N at 5 mph 7 km/h.
Wednesday, October 7, 2026
Mid-Morning
50°F 10°C
Sunny
Mid-Afternoon
61°F 16°C
Overcast
Early-Evening
60°F 15°C
Overcast
Refreshing around 61°F 16°C, cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds swinging from the SW to the W at 6 mph 10 km/h.
Thursday, October 8, 2026
Mid-Morning
51°F 11°C
Partly Cloudy
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
56°F 13°C
Partly Cloudy
Mildly cool near 59°F 15°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds shifting from the NNW to the WSW at 8 mph 12 km/h.
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