Osco, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Osco, IL in one place.
Mostly sunny, with a high near 80. East wind 5 to 10 mph.
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: Jun 27, 2026 1:19 AM CDT.
The active forecast window currently covers Jun 27 to Jul 3, 2026 for Osco, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 27 to Jul 3, 2026
- Latest sync
- Jun 27, 2026 1:19 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Osco
Wednesday looks like the warmest upcoming period in Osco at 93 degrees F.
Saturday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Monday at about 15 to 20 mph S.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 27, 2026 1:19 AM CDT
- Coverage
- 7 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 after 1am. Mostly cloudy. Low around 65, with temperatures rising to around 67 overnight. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am. Partly sunny, with a high near 88. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Mostly clear, with a low around 74.
Mostly sunny, with a high near 91.
Mostly clear, with a low around 76.
Sunny, with a high near 92.
Mostly clear, with a low around 75.
Sunny, with a high near 93.
Mostly clear, with a low around 75.
Sunny, with a high near 93.
Mostly clear, with a low around 74.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jun 27
|
Mostly Sunny
|
80°F |
5 to 10 mph
E
|
|
Saturday Night
Jun 27
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
65°F |
5 to 10 mph
SE
|
|
Sunday
Jun 28
|
Chance Showers And Thunderstorms then Partly Sunny
|
88°F |
10 to 15 mph
SE
|
|
Sunday Night
Jun 28
|
Mostly Clear
|
74°F |
15 mph
S
|
|
Monday
Jun 29
|
Mostly Sunny
|
91°F |
15 to 20 mph
S
|
|
Monday Night
Jun 29
|
Mostly Clear
|
76°F |
15 mph
S
|
|
Tuesday
Jun 30
|
Sunny
|
92°F |
10 to 15 mph
SW
|
|
Tuesday Night
Jun 30
|
Mostly Clear
|
75°F |
10 to 15 mph
SW
|
|
Wednesday
Jul 1
|
Sunny
|
93°F |
10 to 15 mph
SW
|
|
Wednesday Night
Jul 1
|
Mostly Clear
|
75°F |
10 mph
S
|
|
Thursday
Jul 2
|
Sunny
|
93°F |
10 mph
SW
|
|
Thursday Night
Jul 2
|
Mostly Clear
|
74°F |
5 to 10 mph
SW
|
|
Friday
Jul 3
|
Sunny then Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Osco.