Macoupin County, IL Weather Forecast
County weather hub
Showers And Thunderstorms Likely
Compare major city weather across Macoupin County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers before 7am, then showers and thunderstorms likely. Cloudy, with a high near 65. Northwest wind 8 to 12 mph. Chance of precipitation is 70%.
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
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 4:12 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 83 degrees F.
Friday Night is the coolest period ahead with temperatures near 45 degrees F.
The strongest winds are forecast for Sunday at about 10 to 20 mph S.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 4:12 PM CDT
- Coverage
- 6 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 slight chance of rain showers after 7pm. Mostly cloudy, with a low around 45. Northeast wind around 8 mph. Chance of precipitation is 20%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 68. Southeast wind around 9 mph. Chance of precipitation is 30%.
A chance of rain showers before 7pm. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
A chance of rain showers after 1pm. Mostly cloudy, with a high near 77. Chance of precipitation is 30%.
A chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Showers And Thunderstorms Likely
|
65°F |
8 to 12 mph
NW
|
|
Friday Night
Apr 10
|
Slight Chance Rain Showers
|
45°F |
8 mph
NE
|
|
Saturday
Apr 11
|
Chance Rain Showers
|
68°F |
9 mph
SE
|
|
Saturday Night
Apr 11
|
Chance Rain Showers then Mostly Cloudy
|
57°F |
10 mph
SE
|
|
Sunday
Apr 12
|
Mostly Cloudy then Chance Rain Showers
|
77°F |
10 to 20 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
60°F |
16 mph
S
|
|
Monday
Apr 13
|
Showers And Thunderstorms Likely
|
82°F |
13 to 16 mph
SW
|
|
Monday Night
Apr 13
|
Slight Chance Showers And Thunderstorms
|
65°F |
14 mph
S
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
83°F |
12 to 17 mph
SW
|
|
Tuesday Night
Apr 14
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
62°F |
15 mph
S
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
78°F |
13 to 17 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
54°F |
8 to 13 mph
SW
|
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.
