Macoupin County, IL Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across Macoupin County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy, with a low around 57. East wind around 2 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
- May 26 to Jun 1, 2026
- Latest sync
- May 26, 2026 3:04 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Macoupin County
Thursday looks like the warmest upcoming period in Macoupin County at 82 degrees F.
Sunday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Sunday at about 7 to 10 mph NE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 26, 2026 3:04 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
Mostly cloudy, with a high near 80. East wind 2 to 6 mph.
A chance of rain showers after 10pm. Mostly cloudy, with a low around 60. East wind 1 to 5 mph. Chance of precipitation is 30%.
A chance of rain showers before 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 81. North wind 1 to 5 mph. Chance of precipitation is 30%.
Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 59. Northeast wind around 3 mph. Chance of precipitation is 30%.
Partly sunny, with a high near 82.
Mostly cloudy, with a low around 59.
A slight chance of rain showers between 7am and 1pm. Partly sunny, with a high near 76. Chance of precipitation is 20%.
Mostly cloudy, with a low around 56.
Partly sunny, with a high near 75.
Partly cloudy, with a low around 54.
Mostly sunny, with a high near 77.
Partly cloudy, with a low around 53.
Sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
May 26
|
Mostly Cloudy
|
57°F |
2 mph
E
|
|
Tuesday
May 26
|
Mostly Cloudy
|
80°F |
2 to 6 mph
E
|
|
Tuesday Night
May 26
|
Chance Rain Showers
|
60°F |
1 to 5 mph
E
|
|
Wednesday
May 27
|
Showers And Thunderstorms Likely
|
81°F |
1 to 5 mph
N
|
|
Wednesday Night
May 27
|
Showers And Thunderstorms Likely then Partly Cloudy
|
59°F |
3 mph
NE
|
|
Thursday
May 28
|
Partly Sunny
|
82°F |
3 to 9 mph
NE
|
|
Thursday Night
May 28
|
Mostly Cloudy
|
59°F |
8 mph
E
|
|
Friday
May 29
|
Slight Chance Rain Showers
|
76°F |
8 mph
E
|
|
Friday Night
May 29
|
Mostly Cloudy
|
56°F |
7 mph
E
|
|
Saturday
May 30
|
Partly Sunny
|
75°F |
6 to 9 mph
NE
|
|
Saturday Night
May 30
|
Partly Cloudy
|
54°F |
8 mph
NE
|
|
Sunday
May 31
|
Mostly Sunny
|
77°F |
7 to 10 mph
NE
|
|
Sunday Night
May 31
|
Partly Cloudy
|
53°F |
5 to 8 mph
E
|
|
Monday
Jun 1
|
Sunny
|
78°F |
5 to 8 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.
