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Costa High School, IL Weather Forecast
Costa High School, IL Weather Forecast Dated: 1222 AM Mon Sep 28 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Monday, September 28, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
71°F 22°C
Sunny
Early-Evening
67°F 19°C
Sunny
Pleasant near 71°F 22°C, sunny throughout the day, with lower humidity and steady pressure.
Tuesday, September 29, 2026
Mid-Morning
59°F 15°C
Partly Cloudy
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
71°F 22°C
Partly Cloudy
Comfortable with temperatures reaching 75°F 24°C, partly cloudy in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds out of the S at 12 mph 19 km/h. Gusts up to 21 mph 33 km/h.
Wednesday, September 30, 2026
Mid-Morning
68°F 20°C
Overcast
Mid-Afternoon
83°F 28°C
Overcast
Early-Evening
82°F 28°C
Cloudy
Quite warm around 83°F 28°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds blowing from the S at 13 mph 20 km/h. Gusts up to 31 mph 51 km/h.
Thursday, October 1, 2026
Mid-Morning
69°F 21°C
Scattered Showers
Mid-Afternoon
70°F 21°C
Light Showers
Early-Evening
58°F 14°C
Scattered Showers
Mild temperatures up to 70°F 21°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure rising. Winds moving from the SSW to the N at 12 mph 19 km/h. Gusts up to 25 mph 40 km/h.
Friday, October 2, 2026
Mid-Morning
54°F 12°C
Partly Cloudy
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
56°F 14°C
Partly Cloudy
Refreshing around 62°F 17°C, partly cloudy through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds out of the NNE at 14 mph 22 km/h.
Saturday, October 3, 2026
Mid-Morning
51°F 11°C
Sunny
Mid-Afternoon
61°F 16°C
Cloudy
Early-Evening
63°F 17°C
Sunny
Mildly cool near 61°F 16°C, cloudy in the morning, partly cloudy in the afternoon, and overcast this evening, with increasing humidity and barometric pressure falling. Winds blowing from the ESE at 12 mph 20 km/h. Gusts up to 20 mph 31 km/h.
Sunday, October 4, 2026
Mid-Morning
63°F 17°C
Light Showers
Mid-Afternoon
68°F 20°C
Scattered Showers
Early-Evening
62°F 16°C
Scattered Showers
Comfortable with temperatures reaching 68°F 20°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds increasing from the W at 3 mph 4 km/h to NNW at 15 mph 24 km/h. Gusts up to 27 mph 43 km/h.
Monday, October 5, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
52°F 11°C
Partly Cloudy
Early-Evening
49°F 9°C
Sunny
Crisp with a high near 52°F 11°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the WNW to the NNW at 7 mph 11 km/h.
Tuesday, October 6, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
58°F 14°C
Sunny
Early-Evening
53°F 12°C
Sunny
Refreshing around 58°F 14°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds blowing from the S at 10 mph 17 km/h.
Wednesday, October 7, 2026
Mid-Morning
51°F 10°C
Overcast
Mid-Afternoon
63°F 17°C
Overcast
Early-Evening
60°F 16°C
Overcast
Mildly cool near 63°F 17°C, overcast throughout the day, with steady humidity and steady pressure. Winds swinging from the SSW to the W at 6 mph 10 km/h.
Thursday, October 8, 2026
Mid-Morning
52°F 11°C
Scattered Showers
Mid-Afternoon
52°F 11°C
Partly Cloudy
Early-Evening
45°F 7°C
Scattered Showers
Chilly near 52°F 11°C, scattered downpours possible, with increasing humidity and steady pressure. Winds out of the NW at 15 mph 24 km/h. Gusts up to 22 mph 35 km/h.
Friday, October 9, 2026
Mid-Morning
39°F 4°C
Overcast
Mid-Afternoon
47°F 8°C
Cloudy
Early-Evening
44°F 6°C
Sunny
Crisp with a high near 47°F 8°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds turning from the NNW to the W at 9 mph 14 km/h.
Saturday, October 10, 2026
Mid-Morning
46°F 8°C
Cloudy
Mid-Afternoon
57°F 14°C
Overcast
Early-Evening
51°F 11°C
Overcast
Brisk around 57°F 14°C, cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds switching from the WSW to the NW at 11 mph 17 km/h. Gusts up to 26 mph 41 km/h.
Sunday, October 11, 2026
Mid-Morning
39°F 4°C
Overcast
Mid-Afternoon
46°F 8°C
Sunny
Early-Evening
48°F 9°C
Sunny
Cool and brisk at 46°F 8°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling. Winds moving from the NNW to the SW at 8 mph 13 km/h.
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