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Waterloo High School, IL 14 Day Weather
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Waterloo High School, IL Weather Forecast
Waterloo High School, IL Weather Forecast Dated: 917 PM Fri Sep 18 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Friday, September 18, 2026
Mid-Morning
77°F 25°C
Sunny
Mid-Afternoon
99°F 37°C
Cloudy
Early-Evening
89°F 32°C
Sunny
Very hot with temperatures reaching 99°F 37°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
75°F 24°C
Light Showers
Mid-Afternoon
95°F 35°C
Overcast
Early-Evening
88°F 32°C
Overcast
Hot and sweltering around 95°F 35°C, scattered morning showers before drying out later, with lower humidity and barometric pressure falling.
Sunday, September 20, 2026
Mid-Morning
78°F 25°C
Overcast
Mid-Afternoon
94°F 35°C
Cloudy
Early-Evening
83°F 29°C
Scattered Showers
Sizzling hot with 94°F 35°C, locally heavy downpours at times, with increasing humidity and steady pressure. Winds turning from the SE to the NW at 9 mph 15 km/h.
Monday, September 21, 2026
Mid-Morning
70°F 21°C
Light Fog
Mid-Afternoon
77°F 25°C
Scattered Showers
Early-Evening
68°F 20°C
Scattered Showers
Mild temperatures up to 77°F 25°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds switching from the NW to the NNW at 10 mph 16 km/h.
Tuesday, September 22, 2026
Mid-Morning
62°F 17°C
Scattered Showers
Mid-Afternoon
66°F 19°C
Scattered Showers
Early-Evening
62°F 17°C
Scattered Showers
Refreshing around 66°F 19°C, scattered downpours possible, with lower humidity and steady pressure. Winds moving from the NNW to the NNE at 9 mph 14 km/h.
Wednesday, September 23, 2026
Mid-Morning
61°F 16°C
Cloudy
Mid-Afternoon
75°F 24°C
Partly Cloudy
Early-Evening
69°F 21°C
Overcast
Pleasant near 75°F 24°C, cloudy throughout the day, with lower humidity and steady pressure. Winds swinging from the N to the NE at 9 mph 14 km/h.
Thursday, September 24, 2026
Mid-Morning
61°F 16°C
Partly Cloudy
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
68°F 20°C
Sunny
Comfortable with temperatures reaching 75°F 24°C, partly cloudy in the morning, sunny in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds shifting from the NNE to the NE at 10 mph 15 km/h.
Friday, September 25, 2026
Mid-Morning
60°F 16°C
Overcast
Mid-Afternoon
62°F 17°C
Scattered Showers
Early-Evening
63°F 17°C
Overcast
Cool with a high near 62°F 17°C, scattered downpours possible, with steady humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
79°F 26°C
Overcast
Early-Evening
73°F 23°C
Overcast
Mild temperatures up to 79°F 26°C, sunny in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and steady pressure.
Sunday, September 27, 2026
Mid-Morning
65°F 19°C
Overcast
Mid-Afternoon
79°F 26°C
Overcast
Early-Evening
76°F 24°C
Overcast
Mild with a high of 79°F 26°C, overcast throughout the day, with lower humidity and barometric pressure falling.
Monday, September 28, 2026
Mid-Morning
61°F 16°C
Light Showers
Mid-Afternoon
63°F 17°C
Heavy Rain Showers
Early-Evening
60°F 16°C
Light Fog
Comfortable at 63°F 17°C, showers lingering into the afternoon before clearing, with steady humidity and steady pressure. Winds turning from the SSE to the NNW at 14 mph 21 km/h. Gusts up to 25 mph 40 km/h.
Tuesday, September 29, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
68°F 20°C
Sunny
Early-Evening
63°F 17°C
Sunny
Comfortable with temperatures reaching 68°F 20°C, sunny throughout the day, with steady humidity and steady pressure. Winds switching from the NW to the WNW at 8 mph 14 km/h.
Wednesday, September 30, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
67°F 20°C
Sunny
Enjoyable around 73°F 23°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Thursday, October 1, 2026
Mid-Morning
64°F 18°C
Overcast
Mid-Afternoon
71°F 22°C
Overcast
Early-Evening
63°F 17°C
Overcast
Mild temperatures up to 71°F 22°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds moving from the E to the NNE at 8 mph 14 km/h.
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