Current Conditions

Oswego, Illinois

77°F25°C

Rain

Wind

S 8 mph13 km/h

Humidity

61%

Cloud Cover

59%

As of Tuesday, September 8, 2026 at 9:09 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 6 to 8 mph10 to 12 km/h. 23% chance of drizzle before dawn.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 80°F27°C	Low 72°F22°C	Precip 0.24 in6.2 mm95%	Cloud 84%	Wind WSW 7 mph11 km/h	Wednesday: Overcast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Breezy from the WSW at 7 to 8 mph12 to 14 km/h. 95% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 6 to 8 mph10 to 12 km/h. 23% chance of drizzle before dawn.
Drizzle	High 79°F26°C	Low 65°F18°C	Precip 0.03 in0.8 mm13%	Cloud 76%	Wind NNE 5 mph8 km/h	Thursday: Overcast and warm, with a high of 79°F26°C and morning low of 67°F20°C. Light wind from the NNE around 5 mph8 km/h. 13% chance of drizzle in the morning. Thursday Night: Mostly cloudy, with a low around 65°F18°C. Light wind from the NNE around 5 mph8 km/h. 12% chance of drizzle before dawn.
Clear	High 82°F28°C	Low 58°F15°C	Precip 0 in0.1 mm3%	Cloud 21%	Wind SE 5 mph8 km/h	Friday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 58°F15°C. Light wind from the SE around 5 mph9 km/h. Friday Night: Mostly clear, with a low around 59°F15°C. Light wind from the ESE around 5 mph8 km/h.
Drizzle	High 86°F30°C	Low 65°F18°C	Precip 0.03 in0.8 mm19%	Cloud 43%	Wind SW 7 mph11 km/h	Saturday: Mostly cloudy and warm, with a high of 86°F30°C and morning low of 65°F18°C. Breezy from the SW at 8 to 9 mph12 to 15 km/h. 19% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 65°F19°C. Light wind from the SW around 6 mph9 km/h. 14% chance of drizzle in the evening.
Clear	High 78°F26°C	Low 62°F17°C	Precip 0.03 in0.8 mm9%	Cloud 34%	Wind N 6 mph10 km/h	Sunday: Partly cloudy and warm, with a high of 78°F26°C and morning low of 62°F17°C. Breezy from the N at 7 mph11 km/h. Sunday Night: Partly cloudy, with a low around 65°F18°C. Light wind from the N around 6 mph10 km/h.
Showers	High 82°F28°C	Low 61°F16°C	Precip 0.13 in3.2 mm20%	Cloud 54%	Wind SSE 10 mph15 km/h	Monday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 61°F16°C. Breezy from the SSE at 10 to 13 mph16 to 20 km/h. 20% chance of showers throughout the day. Monday Night: Partly cloudy, with a low around 62°F16°C. Breezy from the SSE at 9 to 13 mph15 to 20 km/h. 13% chance of showers throughout the night.
Showers	High 82°F28°C	Low 69°F21°C	Precip 0.12 in3 mm23%	Cloud 68%	Wind SW 9 mph15 km/h	Tuesday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 70°F21°C. Breezy from the WSW at 10 mph16 km/h. 19% chance of drizzle throughout the day. Tuesday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the SW at 9 to 13 mph15 to 21 km/h. 23% chance of showers throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	80°F27°C	72°F22°C	0.24 in6.2 mm· 95%	84%	Rain	WSW 7 mph11 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Breezy from the WSW at 7 to 8 mph12 to 14 km/h. 95% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 73°F23°C. Breezy from the SW at 6 to 8 mph10 to 12 km/h. 23% chance of drizzle before dawn.
	ThursdaySep 10	79°F26°C	65°F18°C	0.03 in0.8 mm· 13%	76%	Drizzle	NNE 5 mph8 km/h
DayOvercast and warm, with a high of 79°F26°C and morning low of 67°F20°C. Light wind from the NNE around 5 mph8 km/h. 13% chance of drizzle in the morning. NightMostly cloudy, with a low around 65°F18°C. Light wind from the NNE around 5 mph8 km/h. 12% chance of drizzle before dawn.
	FridaySep 11	82°F28°C	58°F15°C	0 in0.1 mm· 3%	21%	Clear	SE 5 mph8 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 58°F15°C. Light wind from the SE around 5 mph9 km/h. NightMostly clear, with a low around 59°F15°C. Light wind from the ESE around 5 mph8 km/h.
	SaturdaySep 12	86°F30°C	65°F18°C	0.03 in0.8 mm· 19%	43%	Drizzle	SW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 86°F30°C and morning low of 65°F18°C. Breezy from the SW at 8 to 9 mph12 to 15 km/h. 19% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 65°F19°C. Light wind from the SW around 6 mph9 km/h. 14% chance of drizzle in the evening.
	SundaySep 13	78°F26°C	62°F17°C	0.03 in0.8 mm· 9%	34%	Clear	N 6 mph10 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 62°F17°C. Breezy from the N at 7 mph11 km/h. NightPartly cloudy, with a low around 65°F18°C. Light wind from the N around 6 mph10 km/h.
	MondaySep 14	82°F28°C	61°F16°C	0.13 in3.2 mm· 20%	54%	Showers	SSE 10 mph15 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 61°F16°C. Breezy from the SSE at 10 to 13 mph16 to 20 km/h. 20% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F16°C. Breezy from the SSE at 9 to 13 mph15 to 20 km/h. 13% chance of showers throughout the night.
	TuesdaySep 15	82°F28°C	69°F21°C	0.12 in3 mm· 23%	68%	Showers	SW 9 mph15 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 70°F21°C. Breezy from the WSW at 10 mph16 km/h. 19% chance of drizzle throughout the day. NightMostly cloudy, with a low around 69°F21°C. Breezy from the SW at 9 to 13 mph15 to 21 km/h. 23% chance of showers throughout the night.
	WednesdaySep 16	78°F25°C	63°F17°C	0.21 in5.4 mm· 32%	62%	Showers	ENE 7 mph10 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 63°F17°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 28% chance of showers throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the ENE at 7 mph11 km/h. 32% chance of showers throughout the night.
	ThursdaySep 17	80°F27°C	66°F19°C	0.19 in4.9 mm· 30%	57%	Showers	SSW 9 mph14 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 66°F19°C. Breezy from the SW at 9 to 10 mph15 to 17 km/h. 30% chance of showers throughout the day. NightMostly cloudy, with a low around 67°F19°C. Breezy from the S at 8 mph13 km/h. 24% chance of showers throughout the night.
	FridaySep 18	74°F24°C	62°F16°C	0.16 in4 mm· 20%	52%	Showers	W 8 mph13 km/h
DayMostly cloudy and warm, with a high of 74°F24°C and morning low of 62°F16°C. Breezy from the W at 9 to 10 mph14 to 15 km/h. 20% chance of showers throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the WNW at 8 mph13 km/h. 20% chance of showers throughout the night.
	SaturdaySep 19	71°F22°C	56°F14°C	0.14 in3.5 mm· 17%	50%	Showers	NW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 56°F14°C. Breezy from the NW at 8 to 9 mph13 to 14 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 58°F15°C. Breezy from the NW at 7 mph11 km/h. 16% chance of showers throughout the night.
	SundaySep 20	70°F21°C	54°F12°C	0.1 in2.5 mm· 13%	50%	Drizzle	NNW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 54°F12°C. Breezy from the NNW at 8 to 9 mph14 to 15 km/h. 13% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 56°F13°C. Breezy from the N at 7 mph11 km/h. 13% chance of drizzle throughout the night.
	MondaySep 21	69°F21°C	51°F11°C	0.11 in2.7 mm· 13%	50%	Showers	NE 7 mph12 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 51°F11°C. Breezy from the NNE at 8 to 9 mph13 to 14 km/h. 12% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 53°F12°C. Breezy from the NE at 7 mph11 km/h. 13% chance of showers throughout the night.
	TuesdaySep 22	70°F21°C	53°F11°C	0.1 in2.5 mm· 18%	55%	Drizzle	ESE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 53°F11°C. Breezy from the SE at 8 to 9 mph13 to 15 km/h. 17% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 54°F12°C. Breezy from the ESE at 7 mph11 km/h. 18% chance of drizzle throughout the night.
	WednesdaySep 23	71°F22°C	53°F12°C	0.08 in2 mm· 13%	56%	Drizzle	SE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 53°F12°C. Breezy from the SE at 8 to 9 mph13 to 14 km/h. 13% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 55°F13°C. Breezy from the SE at 7 mph11 km/h. 13% chance of drizzle throughout the night.

Nearby Cities

Montgomery3 mi5 km Aurora6 mi9 km Yorkville6 mi9 km Plainfield9 mi14 km North Aurora9 mi14 km Batavia12 mi19 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 41.6828°N, 88.3515°W·Elevation: 195m·Timezone: America/Chicago·Population: 33,955