McDonough County, IL Weather Forecast
County weather hub
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Compare major city weather across McDonough County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 76. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
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
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 8:38 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in McDonough County
Friday looks like the warmest upcoming period in McDonough County 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 5 to 20 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 8:38 AM CDT
- Coverage
- 7 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 3am. Mostly cloudy. Low around 59, with temperatures rising to around 61 overnight. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
A slight chance of rain showers after 7am. Mostly sunny, with a high near 77. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm. Mostly clear, with a low around 55. South wind 5 to 10 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms. Mostly cloudy, with a low around 45. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Showers and thunderstorms likely. Partly sunny, with a high near 56. Chance of precipitation is 70%.
A chance of rain showers before 1am. Mostly clear, with a low around 35. Chance of precipitation is 30%.
Sunny, with a high near 57.
Mostly clear, with a low around 37.
Sunny, with a high near 68.
Mostly clear, with a low around 49.
Mostly sunny, with a high near 73.
Mostly clear, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Apr 15
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
76°F |
5 to 15 mph
S
|
|
Tonight
Apr 15
|
Chance Showers And Thunderstorms
|
59°F |
10 to 15 mph
SW
|
|
Thursday
Apr 16
|
Slight Chance Rain Showers
|
77°F |
10 to 15 mph
SW
|
|
Thursday Night
Apr 16
|
Slight Chance Rain Showers then Mostly Clear
|
55°F |
5 to 10 mph
S
|
|
Friday
Apr 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
84°F |
5 to 20 mph
S
|
|
Friday Night
Apr 17
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
45°F |
15 mph
S
|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
56°F |
15 to 20 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
35°F |
10 to 15 mph
W
|
|
Sunday
Apr 19
|
Sunny
|
57°F |
10 to 15 mph
NW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
37°F |
5 to 10 mph
SW
|
|
Monday
Apr 20
|
Sunny
|
68°F |
5 to 15 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
49°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
73°F |
10 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Mostly Clear
|
52°F |
10 to 15 mph
SW
|
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.
