Alpha Park, IL 14 Day Weather
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Alpha Park, IL Weather Forecast


Alpha Park, IL Weather Forecast Dated: 612 AM Fri Sep 18 2026
Expect a mild stretch with more clouds than sun and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate.
Friday, September 18, 2026
Mid-Morning
64°F 18°C
Scattered Showers
Mid-Afternoon
81°F 27°C
Partly Cloudy
Early-Evening
74°F 24°C
Sunny
Warm and summery around 81°F 27°C (feels like 84°F 29°C), periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds turning from the ENE to the E at 11 mph 18 km/h. Gusts up to 20 mph 32 km/h.
Saturday, September 19, 2026
Mid-Morning
69°F 20°C
Light Showers
Mid-Afternoon
76°F 25°C
Scattered Showers
Early-Evening
74°F 23°C
Light Showers
Comfortable with temperatures reaching 76°F 25°C, scattered downpours possible, with lower humidity and barometric pressure falling. Winds switching from the SE to the SSE at 8 mph 13 km/h.
Sunday, September 20, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
80°F 27°C
Light Showers
Early-Evening
66°F 19°C
Overcast
Very warm near 80°F 27°C, though humidity makes it feel like 84°F 29°C, dry early, with showers developing in the afternoon, with steady humidity and steady pressure. Winds moving from the E to the ENE at 14 mph 22 km/h. Gusts up to 21 mph 34 km/h.
Monday, September 21, 2026
Mid-Morning
60°F 15°C
Light Showers
Mid-Afternoon
61°F 16°C
Scattered Showers
Early-Evening
59°F 15°C
Light Showers
Cool with a high near 61°F 16°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds swinging from the NE to the NNE at 9 mph 14 km/h.
Tuesday, September 22, 2026
Mid-Morning
54°F 12°C
Scattered Showers
Mid-Afternoon
56°F 13°C
Scattered Showers
Early-Evening
55°F 13°C
Overcast
Brisk around 56°F 13°C, scattered downpours possible, with steady humidity and steady pressure. Winds blowing from the NE at 10 mph 15 km/h.
Wednesday, September 23, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
66°F 19°C
Cloudy
Early-Evening
64°F 18°C
Overcast
Mildly cool near 66°F 19°C, overcast throughout the day, with steady humidity and steady pressure.
Thursday, September 24, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
65°F 19°C
Overcast
Comfortable with temperatures reaching 68°F 20°C, overcast throughout the day, with steady humidity and steady pressure.
Friday, September 25, 2026
Mid-Morning
63°F 17°C
Light Fog
Mid-Afternoon
69°F 21°C
Overcast
Early-Evening
63°F 17°C
Overcast
Enjoyable around 69°F 21°C, overcast throughout the day, with lower humidity and steady pressure. Winds NE at 9 mph 14 km/h.
Saturday, September 26, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
69°F 21°C
Partly Cloudy
Early-Evening
66°F 19°C
Cloudy
Mild temperatures up to 69°F 21°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds out of the SE at 5 mph 9 km/h.
Sunday, September 27, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
65°F 19°C
Overcast
Mildly cool near 64°F 18°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling. Winds moving from the S to the SE at 8 mph 13 km/h. Gusts up to 21 mph 34 km/h.
Monday, September 28, 2026
Mid-Morning
69°F 21°C
Partly Cloudy
Mid-Afternoon
85°F 30°C
Overcast
Early-Evening
80°F 27°C
Partly Cloudy
Warm and summery near 85°F 30°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds SSW at 14 mph 22 km/h. Gusts up to 28 mph 44 km/h.
Tuesday, September 29, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
83°F 28°C
Cloudy
Early-Evening
75°F 24°C
Partly Cloudy
Balmy with temperatures reaching 83°F 28°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds shifting from the S to the SE at 8 mph 13 km/h.
Wednesday, September 30, 2026
Mid-Morning
67°F 19°C
Overcast
Mid-Afternoon
78°F 25°C
Sunny
Early-Evening
69°F 21°C
Sunny
Enjoyable around 78°F 25°C, partly cloudy in the morning, sunny in the afternoon, and overcast this evening, with increasing humidity and steady pressure. Winds building from NNW at 3 mph 5 km/h to N at 13 mph 21 km/h. Gusts up to 22 mph 36 km/h.
Thursday, October 1, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
53°F 12°C
Overcast
Mildly cool near 59°F 15°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds NNW at 17 mph 27 km/h. Gusts up to 22 mph 35 km/h.
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