Macoupin County, IL Weather Forecast
County weather hub
Sunny
Compare major city weather across Macoupin County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 89. Northeast wind 3 to 7 mph.
County Weather Overview
This county weather page brings together forecast coverage for Macoupin County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 9 of 9 mapped cities in Macoupin County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 14 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 11:10 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Macoupin County
Wednesday looks like the warmest upcoming period in Macoupin County at 91 degrees F.
Monday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Sunday at about 6 to 10 mph W.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 11:10 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 68. Northeast wind 0 to 6 mph.
Sunny, with a high near 91. Northeast wind 0 to 3 mph.
Mostly clear, with a low around 69. East wind 0 to 3 mph.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. South wind 0 to 3 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 71. Chance of precipitation is 40%.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Mostly clear, with a low around 72. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Mostly sunny, with a high near 89.
Partly cloudy, with a low around 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 14
|
Sunny
|
89°F |
3 to 7 mph
NE
|
|
Tonight
Jul 14
|
Clear
|
68°F |
0 to 6 mph
NE
|
|
Wednesday
Jul 15
|
Sunny
|
91°F |
0 to 3 mph
NE
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
69°F |
0 to 3 mph
E
|
|
Thursday
Jul 16
|
Sunny then Chance Showers And Thunderstorms
|
91°F |
0 to 3 mph
S
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms then Mostly Clear
|
71°F |
2 mph
SW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
90°F |
1 to 7 mph
W
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
71°F |
1 to 5 mph
SW
|
|
Saturday
Jul 18
|
Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
6 to 9 mph
W
|
|
Saturday Night
Jul 18
|
Slight Chance Showers And Thunderstorms
|
72°F |
7 mph
W
|
|
Sunday
Jul 19
|
Slight Chance Showers And Thunderstorms
|
90°F |
6 to 10 mph
W
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
69°F |
5 to 9 mph
SW
|
|
Monday
Jul 20
|
Mostly Sunny
|
89°F |
5 to 9 mph
SW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
66°F |
3 to 7 mph
NE
|
Major City Forecasts
Live forecast snapshots for major cities across Macoupin County.
Coverage
Forecast coverage currently spans 9 of 9 mapped cities in Macoupin County.
Largest mapped city population in this region: 5,441.
