Oswego, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 77°F 25°C Heat Index: 77°F	Observed at: Oswego, IL	Elevation: 630 ft | 192 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 77°F | 25°C
	Pressure: 29.35 in | 993.8 mb	Dewpoint: 62°F | 17°C
	Humidity: 60%	Wind: NE 5 mph | NE 8 kph
	Feels Like: 80°F | 27°C	Visibility: 50.8 mi | 81.7 km
	Lat/Long: 41.6828 | -88.3514	Sunrise: 5:33 AM   Sunset: 8:25 PM

7 Day Graphical Forecast

Valid: 10:28 PM 7/16/2026

Tonight Partly Cloudy 74 °F 17% Chance Precipitation Friday Overcast 92 |72 °F 22% Chance Precipitation Saturday Overcast 89 |70 °F 48% Chance Precipitation Sunday Overcast 84 |65 °F 9% Chance Precipitation Monday Overcast 82 |63 °F 43% Chance Precipitation Tuesday Overcast 82 |62 °F 43% Chance Precipitation Wednesday Overcast 72 |51 °F 3% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:28 PM 7/16/2026

10 PM Clear 78 °F 1% Chance Precipitation

11 PM Clear 77 °F 2% Chance Precipitation

12 AM Clear 75 °F 3% Chance Precipitation

1 AM Clear 74 °F 3% Chance Precipitation

2 AM Clear 74 °F 4% Chance Precipitation

3 AM Clear 73 °F 3% Chance Precipitation

4 AM Clear 72 °F 3% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Oswego, IL - (Fahrenheit & Celsius) Valid: 10:28 PM 7/16/2026 Tonight Partly Cloudy with a low around 74°F [23°C]. NE wind to around 9 mph [14 kph], with gusts to near 15 mph [25 kph]. Chance of precipitation 17% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 92°F [33°C]. SW wind to around 13 mph [20 kph], with gusts to near 18 mph [28 kph]. Dewpoint near 62°F [17°C] with humidity of 86%. Pressure around 29.35 in [993.8 mb]. UV Index: 7.5. Chance of precipitation 22% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 72°F [22°C]. SW wind to around 13 mph [20 kph], with gusts to near 18 mph [28 kph]. Chance of precipitation 22% with QPF of 0.00 in [0.0 mm]. Saturday Overcast with a high near 89°F [32°C]. WNW wind to around 14 mph [22 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 62°F [17°C] with humidity of 87%. Pressure around 29.35 in [993.8 mb]. UV Index: 7.45. Chance of precipitation 48% with QPF of 0.01 in [0.3 mm]. Saturday Night Overcast with a low around 70°F [21°C]. WNW wind to around 14 mph [22 kph], with gusts to near 28 mph [45 kph]. Chance of precipitation 48% with QPF of 0.01 in [0.3 mm]. Sunday Overcast with a high near 84°F [29°C]. ENE wind to around 8 mph [12 kph], with gusts to near 13 mph [22 kph]. Dewpoint near 62°F [17°C] with humidity of 91%. Pressure around 29.35 in [993.8 mb]. UV Index: 7.5. Chance of precipitation 9% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 65°F [18°C]. ENE wind to around 8 mph [12 kph], with gusts to near 13 mph [22 kph]. Chance of precipitation 9% with QPF of 0.00 in [0.0 mm]. Monday Overcast with a high near 82°F [28°C]. S wind to around 13 mph [21 kph], with gusts to near 24 mph [38 kph]. Dewpoint near 62°F [17°C] with humidity of 98%. Pressure around 29.35 in [993.8 mb]. UV Index: 6.8. Chance of precipitation 43% with QPF of 0.00 in [0.0 mm]. Monday Night Overcast with a low around 63°F [17°C]. S wind to around 13 mph [21 kph], with gusts to near 24 mph [38 kph]. Chance of precipitation 43% with QPF of 0.00 in [0.0 mm]. Tuesday Overcast with a high near 82°F [28°C]. NW wind to around 19 mph [31 kph], with gusts to near 36 mph [58 kph]. Dewpoint near 62°F [17°C] with humidity of 97%. Pressure around 29.35 in [993.8 mb]. UV Index: 7.25. Chance of precipitation 43% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 62°F [17°C]. NW wind to around 19 mph [31 kph], with gusts to near 36 mph [58 kph]. Chance of precipitation 43% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 72°F [22°C]. N wind to around 17 mph [28 kph], with gusts to near 30 mph [48 kph]. Dewpoint near 62°F [17°C] with humidity of 81%. Pressure around 29.35 in [993.8 mb]. UV Index: 7.3. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 51°F [10°C]. N wind to around 17 mph [28 kph], with gusts to near 30 mph [48 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Oswego, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.3 mm | 0.01 in

Saturday Night: 0.3 mm | 0.01 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 0.0 mm | 0.00 in

Monday Night: 0.0 mm | 0.00 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

7 Day and Night - Maximum Wind Speed Forecast for Oswego, IL

Tonight: NE @ 14 kph | 9 mph

Friday: SW @ 20 kph | 13 mph

Friday Night: SW @ 20 kph | 13 mph

Saturday: WNW @ 22 kph | 14 mph

Saturday Night: WNW @ 22 kph | 14 mph

Sunday: ENE @ 12 kph | 8 mph

Sunday Night: ENE @ 12 kph | 8 mph

Monday: S @ 21 kph | 13 mph

Monday Night: S @ 21 kph | 13 mph

Tuesday: NW @ 31 kph | 19 mph

Tuesday Night: NW @ 31 kph | 19 mph

Wednesday: N @ 28 kph | 17 mph

Wednesday Night: N @ 28 kph | 17 mph

7 Day and Night - Maximum Humidity Forecast for Oswego, IL

Tonight: 96 %

Friday: 86 %

Friday Night: 86 %

Saturday: 87 %

Saturday Night: 87 %

Sunday: 91 %

Sunday Night: 91 %

Monday: 98 %

Monday Night: 98 %

Tuesday: 97 %

Tuesday Night: 97 %

Wednesday: 81 %

Wednesday Night: 81 %

7 Day and Night - Snowfall Totals Forecast for Oswego, IL

Tonight: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

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