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Oswego, IL Weather
Current conditions
Observed at Aurora Municipal Airport · 54 min ago
Forecast
10-day-
Tuesday
Sunny. High near 69, with temperatures falling to around 67 in the afternoon. East southeast wind 0 to 5 mph.
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Tuesday Night
Mostly clear, with a low around 41. East wind 0 to 5 mph.
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Wednesday
Sunny, with a high near 72. Southwest wind around 0 mph.
National Weather Service forecast updated 2 hrs ago.
Hourly
Hourly forecast- Now42°
- 7 AM42°
- 8 AM44°
- 9 AM50°
- 10 AM56°
- 11 AM61°
- 12 PM64°
- 1 PM67°
- 2 PM68°
- 3 PM69°
- 4 PM69°
- 5 PM67°
- 6 PM62°
- 7 PM58°
- 8 PM55°
- 9 PM52°
- 10 PM50°
- 11 PM49°
- Wed12 AM48°
- 1 AM47°
- 2 AM46°
- 3 AM44°
- 4 AM43°
- 5 AM42°
10-day forecast
Details- TonightOct 19Partly Cloudy41°
- TodayOct 20Sunny41°69°
- WedOct 21Sunny46°72°
- ThuOct 22Sunny47°72°
- FriOct 23Sunny46°69°
- SatOct 24Mostly Sunny50°69°
- SunOct 25Partly Sunny48°71°
- MonOct 26Partly Sunny66°
- TueOct 27Cloudy0.11 in42°54°
- WedOct 28Cloudy39°53°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Oswego
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Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- TueModerate
- WedModerate
- ThuModerate
Aurora and Elgin, IL reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyAurora Water, records since 1887. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Aurora 9 km
- Joliet 28 km
- Naperville 20 km
- Elgin 40 km
- Cicero 53 km
- Arlington Heights 55 km
- Schaumburg 45 km
- Bolingbrook 24 km
- Palatine 54 km
- Des Plaines 55 km
- Orland Park 42 km
- Tinley Park 49 km
Forecasters' discussion
From the National Weather Service office in LOT, issued 4 hrs ago
Key Messages
- Some ground fog may develop within 10-15 miles of Lake Michigan during early morning hours the next few days. Any fog would then quickly dissipate after sunrise.
- An extended period of dry and above to much above average temperatures is expected through the upcoming weekend.
Discussion
Issued at 154 AM CDT Tue Oct 20 2026
No significant weather is expected through the upcoming weekend with above to much above average temperatures each day. Generally light winds should allow weak lake breezes to form each of the next several afternoons, but only result in slightly cooler conditions right near the lake. A modest increase in moisture in the wake of the afternoon lake breezes could allow for some ground fog to form during the early morning hours the next few days. Otherwise, look for mostly sunny conditions for the remainder of the work week.
- Borchardt/Izzi
Aviation
Issued at 1230 AM CDT Tue Oct 20 2026
Key Aviation Messages for the current TAF period:
- Patchy fog possible around sunrise.
Winds are expected to be light and variable, if not outright calm through the overnight. There is a chance for patchy fog toward daybreak for Chicago terminals, with better chances closer to the lake. There is still uncertainty with how low visibilities will go, but will be monitored through the night. But the expectation is that any fog that does form should dissipate after sunrise for a return to VFR.
Light winds will prevail through the day, mostly out of the east. There is another chance for patchy fog tomorrow morning. Given there is little change to the overall weather pattern tomorrow, would like to see how this morning plays out first before adding fog to the TAFs for Wednesday morning.
DK
Lot Watches
IL...None. IN...None. LM...None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.