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Oswego, IL 14 Day Weather - 60543 WeatherWorld.com
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Oswego, IL Weather Forecast
Oswego, IL Weather Forecast Dated: 1218 AM Sun Sep 20 2026
Expect a cool pattern with more clouds than sun and occasional showers over the coming period. generally humid conditions and a stable pattern will dominate.
Sunday, September 20, 2026
Mid-Morning
64°F 18°C
Light Showers
Mid-Afternoon
63°F 17°C
Scattered Showers
Early-Evening
61°F 16°C
Scattered Showers
Refreshing around 63°F 17°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure rising. Winds out of the NE at 16 mph 25 km/h. Gusts up to 30 mph 48 km/h.
Monday, September 21, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
60°F 15°C
Overcast
Mildly cool near 59°F 15°C, overcast throughout the day, with lower humidity and steady pressure. Winds blowing from the ENE at 13 mph 21 km/h. Gusts up to 24 mph 39 km/h.
Tuesday, September 22, 2026
Mid-Morning
56°F 13°C
Overcast
Mid-Afternoon
60°F 15°C
Cloudy
Early-Evening
58°F 15°C
Sunny
Comfortable at 60°F 15°C, overcast through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds moving from the NE to the NNE at 10 mph 15 km/h.
Wednesday, September 23, 2026
Mid-Morning
58°F 15°C
Overcast
Mid-Afternoon
59°F 15°C
Scattered Showers
Early-Evening
58°F 14°C
Scattered Showers
Cool with a high near 59°F 15°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds swinging from the NNE to the ENE at 11 mph 17 km/h. Gusts up to 22 mph 35 km/h.
Thursday, September 24, 2026
Mid-Morning
60°F 15°C
Partly Cloudy
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
63°F 17°C
Overcast
Refreshing around 65°F 18°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the E at 10 mph 17 km/h.
Friday, September 25, 2026
Mid-Morning
57°F 14°C
Overcast
Mid-Afternoon
60°F 15°C
Overcast
Early-Evening
60°F 16°C
Overcast
Mildly cool near 60°F 15°C, overcast throughout the day, with steady humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
60°F 15°C
Sunny
Mid-Afternoon
68°F 20°C
Overcast
Early-Evening
62°F 17°C
Overcast
Comfortable with temperatures reaching 68°F 20°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure.
Sunday, September 27, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
65°F 19°C
Cloudy
Early-Evening
64°F 18°C
Overcast
Cool with a high near 65°F 19°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds turning from the NE to the SSE at 5 mph 8 km/h.
Monday, September 28, 2026
Mid-Morning
59°F 15°C
Overcast
Mid-Afternoon
68°F 20°C
Cloudy
Early-Evening
65°F 18°C
Overcast
Mild temperatures up to 68°F 20°C, overcast throughout the day, with steady humidity and steady pressure.
Tuesday, September 29, 2026
Mid-Morning
61°F 16°C
Light Fog
Mid-Afternoon
60°F 16°C
Scattered Showers
Early-Evening
58°F 15°C
Scattered Showers
Mildly cool near 60°F 16°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the E to the NNE at 11 mph 17 km/h. Gusts up to 21 mph 34 km/h.
Wednesday, September 30, 2026
Mid-Morning
56°F 14°C
Scattered Showers
Mid-Afternoon
56°F 13°C
Light Showers
Early-Evening
56°F 13°C
Light Showers
Chilly near 56°F 13°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the NNE to the NE at 12 mph 19 km/h. Gusts up to 24 mph 39 km/h.
Thursday, October 1, 2026
Mid-Morning
55°F 13°C
Scattered Showers
Mid-Afternoon
59°F 15°C
Scattered Showers
Early-Evening
58°F 15°C
Scattered Showers
Cool with a high near 59°F 15°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds swinging from the NNW to the NNE at 9 mph 14 km/h.
Friday, October 2, 2026
Mid-Morning
60°F 15°C
Fog
Mid-Afternoon
63°F 17°C
Scattered Showers
Early-Evening
62°F 16°C
Overcast
Refreshing around 63°F 17°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the NE at 13 mph 20 km/h. Gusts up to 22 mph 36 km/h.
Saturday, October 3, 2026
Mid-Morning
59°F 15°C
Light Fog
Mid-Afternoon
67°F 19°C
Scattered Showers
Early-Evening
60°F 16°C
Sunny
Mildly cool near 67°F 19°C, scattered downpours possible, with lower humidity and barometric pressure falling. Winds turning from the NE to the SE at 8 mph 12 km/h.
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