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 91.
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
- Oct 13 to Oct 16, 2026
- Latest sync
- Oct 10, 2026 3:52 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Macoupin County
Tuesday looks like the warmest upcoming period in Macoupin County at 91 degrees F.
Friday Night is the coolest period ahead with temperatures near 41 degrees F.
The strongest winds are forecast for Friday at about 9 to 15 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 10, 2026 3:52 PM CDT
- Coverage
- 4 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
A chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 66. Chance of precipitation is 50%.
A chance of rain showers before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 82. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
A chance of rain showers before 1pm. Partly sunny, with a high near 69. Chance of precipitation is 40%.
Partly cloudy, with a low around 41.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Sunny
|
91°F |
7 to 10 mph
SW
|
|
Tuesday Night
Oct 13
|
Chance Showers And Thunderstorms
|
66°F |
5 mph
SE
|
|
Wednesday
Oct 14
|
Showers And Thunderstorms Likely
|
82°F |
2 to 7 mph
NE
|
|
Wednesday Night
Oct 14
|
Showers And Thunderstorms Likely
|
60°F |
7 mph
NE
|
|
Thursday
Oct 15
|
Rain Showers Likely
|
76°F |
7 to 10 mph
SE
|
|
Thursday Night
Oct 15
|
Chance Showers And Thunderstorms
|
52°F |
6 to 9 mph
SW
|
|
Friday
Oct 16
|
Chance Rain Showers
|
69°F |
9 to 15 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
41°F |
8 to 13 mph
NW
|
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.
