Oswego, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Oswego, IL in one place.
Sunny, with a high near 84. West wind 10 to 15 mph, with gusts as high as 25 mph.
Local Weather Overview
This forecast page for Oswego, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 11, 2026 9:26 PM CDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Oswego, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 11, 2026 9:26 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Oswego
Tuesday looks like the warmest upcoming period in Oswego at 84 degrees F.
Saturday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 20 to 25 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 11, 2026 9:26 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers between 7pm and 10pm, then showers and thunderstorms likely. Partly cloudy, with a low around 61. North wind around 5 mph. Chance of precipitation is 70%.
Rain showers likely before 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 55.
Rain showers likely. Mostly cloudy, with a high near 68.
Rain showers likely. Mostly cloudy, with a low around 49.
A slight chance of rain showers before 7am. Partly sunny, with a high near 60.
Partly cloudy, with a low around 36.
Sunny, with a high near 55.
Mostly clear, with a low around 35.
Sunny, with a high near 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Sunny
|
84°F |
10 to 15 mph
W
|
|
Tuesday Night
Oct 13
|
Showers And Thunderstorms Likely
|
61°F |
5 mph
N
|
|
Wednesday
Oct 14
|
Rain Showers Likely
|
73°F |
5 to 10 mph
NE
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy then Slight Chance Rain Showers
|
55°F |
10 mph
NE
|
|
Thursday
Oct 15
|
Rain Showers Likely
|
68°F |
10 mph
E
|
|
Thursday Night
Oct 15
|
Rain Showers Likely
|
49°F |
10 to 20 mph
NNE
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Partly Sunny
|
60°F |
20 to 25 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
36°F |
15 to 20 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
55°F |
5 to 15 mph
NNW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
35°F |
0 to 5 mph
W
|
|
Sunday
Oct 18
|
Sunny
|
62°F |
5 to 15 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Oswego.
