Washington Square, IL 14 Day Weather
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Washington Square, IL Weather Forecast


Washington Square, IL Weather Forecast Dated: 918 PM Fri Sep 18 2026
Expect a cool pattern 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
Overcast
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
68°F 20°C
Cloudy
Pleasant near 68°F 20°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds out of the NNE at 10 mph 16 km/h.
Saturday, September 19, 2026
Mid-Morning
61°F 16°C
Light Showers
Mid-Afternoon
65°F 19°C
Light Fog
Early-Evening
69°F 21°C
Light Showers
Mildly cool near 65°F 19°C, early showers and late showers with a lull during the afternoon, with steady humidity and barometric pressure falling. Winds switching from the SE to the SSE at 5 mph 8 km/h.
Sunday, September 20, 2026
Mid-Morning
64°F 18°C
Light Showers
Mid-Afternoon
62°F 17°C
Light Showers
Early-Evening
62°F 17°C
Light Showers
Comfortable at 62°F 17°C, on-and-off showers throughout the day, with steady humidity and barometric pressure rising. Winds moving from the NNE to the NE at 18 mph 29 km/h. Gusts up to 26 mph 41 km/h.
Monday, September 21, 2026
Mid-Morning
59°F 15°C
Scattered Showers
Mid-Afternoon
62°F 17°C
Overcast
Early-Evening
63°F 17°C
Scattered Showers
Cool with a high near 62°F 17°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the ENE at 15 mph 24 km/h. Gusts up to 20 mph 32 km/h.
Tuesday, September 22, 2026
Mid-Morning
57°F 14°C
Scattered Showers
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
62°F 17°C
Scattered Showers
Refreshing around 59°F 15°C, scattered downpours possible, with steady humidity and steady pressure. Winds shifting from the ENE to the NE at 14 mph 22 km/h. Gusts up to 20 mph 32 km/h.
Wednesday, September 23, 2026
Mid-Morning
59°F 15°C
Scattered Showers
Mid-Afternoon
60°F 16°C
Scattered Showers
Early-Evening
60°F 15°C
Scattered Showers
Mildly cool near 60°F 16°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds NE at 14 mph 22 km/h.
Thursday, September 24, 2026
Mid-Morning
61°F 16°C
Scattered Showers
Mid-Afternoon
61°F 16°C
Scattered Showers
Early-Evening
61°F 16°C
Scattered Showers
Comfortable at 61°F 16°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the NNE at 11 mph 18 km/h.
Friday, September 25, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
62°F 17°C
Overcast
Early-Evening
62°F 17°C
Overcast
Cool with a high near 62°F 17°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds moving from the ENE to the NE at 7 mph 12 km/h.
Saturday, September 26, 2026
Mid-Morning
59°F 15°C
Cloudy
Mid-Afternoon
67°F 20°C
Sunny
Early-Evening
65°F 19°C
Overcast
Refreshing around 67°F 20°C, cloudy through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds ESE at 9 mph 15 km/h.
Sunday, September 27, 2026
Mid-Morning
60°F 16°C
Sunny
Mid-Afternoon
71°F 21°C
Sunny
Early-Evening
67°F 20°C
Sunny
Mild with a high of 71°F 21°C, sunny through the afternoon, turning overcast this evening, with steady humidity and barometric pressure falling. Winds shifting from the SSE to the SE at 10 mph 17 km/h.
Monday, September 28, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
61°F 16°C
Light Showers
Comfortable at 64°F 18°C, mainly dry until evening showers arrive, with increasing humidity and barometric pressure falling. Winds turning from the S to the E at 9 mph 14 km/h.
Tuesday, September 29, 2026
Mid-Morning
60°F 16°C
Scattered Showers
Mid-Afternoon
60°F 16°C
Light Showers
Early-Evening
60°F 16°C
Light Showers
Cool with a high near 60°F 16°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds switching from the SSE to the NNE at 13 mph 21 km/h. Gusts up to 20 mph 32 km/h.
Wednesday, September 30, 2026
Mid-Morning
62°F 16°C
Light Showers
Mid-Afternoon
66°F 19°C
Scattered Showers
Early-Evening
66°F 20°C
Scattered Showers
Refreshing around 66°F 19°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds moving from the NNW to the W at 7 mph 10 km/h.
Thursday, October 1, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
59°F 15°C
Cloudy
Early-Evening
59°F 15°C
Overcast
Mildly cool near 59°F 15°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure rising. Winds blowing from the SE at 13 mph 20 km/h.
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