Current Conditions

Oswego, Illinois

57°F14°C
Cloudy

Wind

NE 8 mph12 km/h

Humidity

78%

Cloud Cover

86%

As of Wednesday, September 23, 2026 at 2:50 AM CDT

Today's Outlook

Day

Overcast and mild, with a high of 65°F18°C and morning low of 57°F14°C. Breezy from the NE at 10 to 12 mph17 to 19 km/h.

Night

Overcast, with a low around 57°F14°C. Breezy from the NE at 7 to 8 mph12 to 12 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
CloudyHigh 65°F18°CLow 57°F14°CPrecip 0 in0.1 mm7%Cloud 82%Wind NE 9 mph14 km/hWednesday: Overcast and mild, with a high of 65°F18°C and morning low of 57°F14°C. Breezy from the NE at 10 to 12 mph17 to 19 km/h. Wednesday Night: Overcast, with a low around 57°F14°C. Breezy from the NE at 7 to 8 mph12 to 12 km/h.
Partly CloudyHigh 69°F21°CLow 55°F13°CPrecip 0 in0 mmCloud 56%Wind ENE 6 mph10 km/hThursday: Mostly cloudy and warm, with a high of 69°F21°C and morning low of 55°F13°C. Light wind from the ENE around 6 mph10 km/h. Thursday Night: Mostly cloudy, with a low around 56°F13°C. Light wind from the ENE around 6 mph9 km/h.
Partly CloudyHigh 69°F21°CLow 57°F14°CPrecip 0 in0.1 mm8%Cloud 78%Wind ENE 5 mph8 km/hFriday: Overcast and warm, with a high of 69°F21°C and morning low of 57°F14°C. Light wind from the ENE around 5 mph8 km/h. Friday Night: Mostly cloudy, with a low around 57°F14°C. Light wind from the ENE around 5 mph8 km/h.
Partly CloudyHigh 70°F21°CLow 51°F10°CPrecip 0 in0.1 mm3%Cloud 68%Wind E 5 mph8 km/hSaturday: Mostly cloudy and warm, with a high of 70°F21°C and morning low of 51°F10°C. Light wind from the E around 5 mph8 km/h. Dry air. Saturday Night: Mostly cloudy, with a low around 53°F11°C. Light wind from the ENE around 5 mph8 km/h.
Partly CloudyHigh 71°F22°CLow 51°F11°CPrecip 0.01 in0.2 mm5%Cloud 59%Wind ENE 4 mph7 km/hSunday: Mostly cloudy and warm, with a high of 71°F22°C and morning low of 51°F11°C. Light wind from the NE around 4 mph7 km/h. Dry air. Sunday Night: Mostly cloudy, with a low around 52°F11°C. Light wind from the ENE around 4 mph7 km/h.
ClearHigh 74°F24°CLow 50°F10°CPrecip 0 in0 mmCloud 25%Wind NE 4 mph6 km/hMonday: Mostly clear and warm, with a high of 74°F24°C and morning low of 50°F10°C. Light wind from the NE around 3 mph5 km/h. Monday Night: Partly cloudy, with a low around 51°F11°C. Light wind from the ENE around 5 mph7 km/h.
DrizzleHigh 73°F23°CLow 52°F11°CPrecip 0.06 in1.4 mm24%Cloud 71%Wind SSE 6 mph10 km/hTuesday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 52°F11°C. Breezy from the S at 6 to 7 mph10 to 12 km/h. 15% chance of drizzle throughout the day. Tuesday Night: Mostly cloudy, with a low around 53°F12°C. Breezy from the SE at 6 to 7 mph9 to 11 km/h. 24% chance of drizzle in the evening.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2365°F18°C57°F14°C0 in0.1 mm· 7%82%CloudyNE 9 mph14 km/h
ThursdaySep 2469°F21°C55°F13°C0 in0 mm· —56%Partly CloudyENE 6 mph10 km/h
FridaySep 2569°F21°C57°F14°C0 in0.1 mm· 8%78%Partly CloudyENE 5 mph8 km/h
SaturdaySep 2670°F21°C51°F10°C0 in0.1 mm· 3%68%Partly CloudyE 5 mph8 km/h
SundaySep 2771°F22°C51°F11°C0.01 in0.2 mm· 5%59%Partly CloudyENE 4 mph7 km/h
MondaySep 2874°F24°C50°F10°C0 in0 mm· —25%ClearNE 4 mph6 km/h
TuesdaySep 2973°F23°C52°F11°C0.06 in1.4 mm· 24%71%DrizzleSSE 6 mph10 km/h
WednesdaySep 3069°F20°C59°F15°C0.31 in8 mm· 39%81%Light RainSSE 8 mph12 km/h
ThursdayOct 168°F20°C56°F14°C0.2 in5 mm· 28%70%ShowersNW 8 mph13 km/h
FridayOct 268°F20°C55°F13°C0.13 in3.4 mm· 27%64%ShowersSSW 8 mph12 km/h
SaturdayOct 369°F20°C55°F13°C0.1 in2.6 mm· 20%62%ShowersSW 8 mph13 km/h
SundayOct 466°F19°C53°F12°C0.09 in2.3 mm· 21%55%DrizzleW 8 mph14 km/h
MondayOct 564°F18°C50°F10°C
Feels 47°F8°C
0.09 in2.3 mm· 18%50%DrizzleW 8 mph13 km/h
TuesdayOct 664°F18°C48°F9°C
Feels 44°F7°C
0.06 in1.6 mm· 11%45%DrizzleWNW 8 mph13 km/h
WednesdayOct 765°F18°C47°F8°C
Feels 43°F6°C
0.05 in1.2 mm· 10%36%DrizzleWNW 8 mph12 km/h

Nearby Cities

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

PatternExampleDescription
/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=11.5Find 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