Osco, IL Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Osco, IL in one place.
Patchy fog and a chance of showers and thunderstorms before 9am, then showers and thunderstorms likely between 9am and noon. Mostly sunny, with a high near 87. South wind 5 to 10 mph. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Osco, 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: Aug 10, 2026 4:42 AM CDT.
The active forecast window currently covers Aug 11 to Aug 16, 2026 for Osco, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 11 to Aug 16, 2026
- Latest sync
- Aug 10, 2026 4:42 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Osco
Tuesday looks like the warmest upcoming period in Osco at 87 degrees F.
Thursday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Friday at about 10 to 15 mph E.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 10, 2026 4:42 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 50%.
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Aug 11
|
Patchy Fog then Mostly Sunny
|
87°F |
5 to 10 mph
S
|
|
Tuesday Night
Aug 11
|
Chance Showers And Thunderstorms
|
71°F |
5 mph
E
|
|
Wednesday
Aug 12
|
Chance Showers And Thunderstorms
|
85°F |
5 to 10 mph
SE
|
|
Wednesday Night
Aug 12
|
Chance Showers And Thunderstorms
|
69°F |
5 mph
E
|
|
Thursday
Aug 13
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
79°F |
5 mph
E
|
|
Thursday Night
Aug 13
|
Showers And Thunderstorms Likely
|
65°F |
5 to 10 mph
NE
|
|
Friday
Aug 14
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
77°F |
10 to 15 mph
E
|
|
Friday Night
Aug 14
|
Chance Showers And Thunderstorms
|
65°F |
10 to 15 mph
E
|
|
Saturday
Aug 15
|
Showers And Thunderstorms Likely
|
80°F |
10 to 15 mph
S
|
|
Saturday Night
Aug 15
|
Chance Showers And Thunderstorms
|
67°F |
5 to 10 mph
SW
|
|
Sunday
Aug 16
|
Chance Showers And Thunderstorms
|
78°F |
5 to 10 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Osco.