McDonough County, IL Weather Forecast
County weather hub
Sunny
Compare major city weather across McDonough County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny. High near 93, with temperatures falling to around 91 in the afternoon. Heat index values as high as 102. West wind 5 to 10 mph.
County Weather Overview
This county weather page brings together forecast coverage for McDonough County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in McDonough County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 3:08 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in McDonough County
Saturday looks like the warmest upcoming period in McDonough County at 93 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 15 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 3:08 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KILX
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 before 9pm. Partly cloudy, with a low around 70. North wind 0 to 5 mph. Chance of precipitation is 30%.
Mostly sunny, with a high near 87.
Mostly clear, with a low around 69.
Sunny, with a high near 92.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 73.
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 89.
Mostly clear, with a low around 63.
Sunny, with a high near 81.
Mostly clear, with a low around 61.
Sunny, with a high near 81.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Sunny
|
93°F |
5 to 10 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
0 to 5 mph
N
|
|
Sunday
Jul 19
|
Mostly Sunny
|
87°F |
5 mph
E
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
69°F |
0 to 5 mph
SE
|
|
Monday
Jul 20
|
Sunny
|
92°F |
5 to 10 mph
S
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
73°F |
5 to 10 mph
W
|
|
Tuesday
Jul 21
|
Slight Chance Showers And Thunderstorms then Sunny
|
89°F |
5 to 15 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
63°F |
5 to 15 mph
N
|
|
Wednesday
Jul 22
|
Sunny
|
81°F |
5 to 10 mph
NE
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
61°F |
0 to 5 mph
E
|
|
Thursday
Jul 23
|
Sunny
|
81°F |
0 to 5 mph
SE
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
63°F |
0 to 5 mph
SE
|
Major City Forecasts
Live forecast snapshots for major cities across McDonough County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in McDonough County.
Largest mapped city population in this region: 17,206.
