Costello School, IL 14 Day Weather
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Costello School, IL Weather Forecast


Costello School, IL Weather Forecast Dated: 415 PM Sun Oct 11 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and a stable pattern will dominate.
Sunday, October 11, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
79°F 26°C
Sunny
Early-Evening
72°F 23°C
Sunny
Pleasant near 79°F 26°C, sunny throughout the day, with steady humidity and steady pressure.
Monday, October 12, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
86°F 30°C
Sunny
Early-Evening
81°F 27°C
Partly Cloudy
Balmy with temperatures reaching 86°F 30°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 SW at 13 mph 21 km/h. Gusts up to 27 mph 44 km/h.
Tuesday, October 13, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
84°F 29°C
Sunny
Early-Evening
79°F 26°C
Sunny
Quite warm around 84°F 29°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds tapering down from WSW 11 mph 18 km/h to NNE 3 mph 6 km/h.
Wednesday, October 14, 2026
Mid-Morning
65°F 18°C
Overcast
Mid-Afternoon
62°F 17°C
Overcast
Early-Evening
61°F 16°C
Overcast
Cool with a high near 62°F 17°C, overcast throughout the day, with lower humidity and barometric pressure rising. Winds NNE at 11 mph 17 km/h. Gusts up to 20 mph 32 km/h.
Thursday, October 15, 2026
Mid-Morning
58°F 14°C
Overcast
Mid-Afternoon
57°F 14°C
Light Rain
Early-Evening
57°F 14°C
Light Rain
Brisk around 57°F 14°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and barometric pressure falling. Winds swinging from the E to the N at 5 mph 8 km/h.
Friday, October 16, 2026
Mid-Morning
51°F 10°C
Scattered Showers
Mid-Afternoon
50°F 10°C
Scattered Showers
Early-Evening
45°F 7°C
Scattered Showers
Cool and brisk at 50°F 10°C, locally heavy downpours at times, with lower humidity and barometric pressure rising. Winds shifting from the WNW to the NNW at 16 mph 25 km/h. Gusts up to 32 mph 51 km/h.
Saturday, October 17, 2026
Mid-Morning
38°F 4°C
Sunny
Mid-Afternoon
49°F 9°C
Sunny
Early-Evening
47°F 8°C
Cloudy
Chilly near 49°F 9°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds turning from the NNW to the WSW at 4 mph 7 km/h.
Sunday, October 18, 2026
Mid-Morning
44°F 6°C
Sunny
Mid-Afternoon
56°F 14°C
Sunny
Early-Evening
54°F 12°C
Sunny
Crisp with a high near 56°F 14°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds out of the SSW at 14 mph 23 km/h. Gusts up to 32 mph 51 km/h.
Monday, October 19, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
64°F 18°C
Sunny
Early-Evening
59°F 15°C
Sunny
Refreshing around 64°F 18°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds moving from the SW to the SSW at 5 mph 9 km/h.
Tuesday, October 20, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
61°F 17°C
Overcast
Mildly cool near 64°F 18°C, overcast throughout the day, with steady humidity and steady pressure.
Wednesday, October 21, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
67°F 20°C
Overcast
Early-Evening
66°F 19°C
Overcast
Comfortable at 67°F 20°C, overcast throughout the day, with increasing humidity and steady pressure. Winds S at 11 mph 18 km/h. Gusts up to 25 mph 41 km/h.
Thursday, October 22, 2026
Mid-Morning
65°F 19°C
Cloudy
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
68°F 20°C
Overcast
Comfortable with temperatures reaching 73°F 23°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds shifting from the SSW to the S at 10 mph 16 km/h. Gusts up to 25 mph 39 km/h.
Friday, October 23, 2026
Mid-Morning
63°F 17°C
Light Rain
Mid-Afternoon
62°F 17°C
Scattered Showers
Early-Evening
62°F 16°C
Drizzle
Refreshing around 62°F 17°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure falling. Winds blowing from the SSW at 11 mph 17 km/h. Gusts up to 29 mph 47 km/h.
Saturday, October 24, 2026
Mid-Morning
60°F 16°C
Light Rain
Mid-Afternoon
55°F 13°C
Drizzle
Early-Evening
53°F 11°C
Drizzle
Cool and brisk at 55°F 13°C, persistent showers off and on through the day, with lower humidity and barometric pressure rising. Winds switching from the ENE to the NNW at 9 mph 13 km/h.
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