Montgomery County, IL Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Montgomery County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 86. South wind 1 to 7 mph.
County Weather Overview
This county weather page brings together forecast coverage for Montgomery County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in Montgomery County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29 to Sep 3, 2026
- Latest sync
- Aug 28, 2026 7:29 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Montgomery County
Tuesday looks like the warmest upcoming period in Montgomery County at 97 degrees F.
Saturday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Sunday at about 6 to 10 mph S.
The forecast from Aug 29 through Sep 3 stays mostly dry.
Forecast Details
- Last updated
- Aug 28, 2026 7:29 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 67. South wind around 6 mph.
Sunny, with a high near 91. South wind 6 to 10 mph.
Mostly clear, with a low around 73.
Sunny, with a high near 95.
Mostly clear, with a low around 75.
Sunny, with a high near 97.
Mostly clear, with a low around 76.
Mostly sunny, with a high near 96.
Mostly clear, with a low around 76.
Sunny, with a high near 97.
Mostly clear, with a low around 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Mostly Sunny
|
86°F |
1 to 7 mph
S
|
|
Saturday Night
Aug 29
|
Partly Cloudy
|
67°F |
6 mph
S
|
|
Sunday
Aug 30
|
Sunny
|
91°F |
6 to 10 mph
S
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
73°F |
7 mph
S
|
|
Monday
Aug 31
|
Sunny
|
95°F |
9 mph
S
|
|
Monday Night
Aug 31
|
Mostly Clear
|
75°F |
7 mph
S
|
|
Tuesday
Sep 1
|
Sunny
|
97°F |
5 to 8 mph
SW
|
|
Tuesday Night
Sep 1
|
Mostly Clear
|
76°F |
5 mph
S
|
|
Wednesday
Sep 2
|
Mostly Sunny
|
96°F |
7 mph
SW
|
|
Wednesday Night
Sep 2
|
Mostly Clear
|
76°F |
5 mph
S
|
|
Thursday
Sep 3
|
Sunny
|
97°F |
6 mph
SW
|
|
Thursday Night
Sep 3
|
Mostly Clear
|
75°F |
3 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Montgomery County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Montgomery County.
Largest mapped city population in this region: 6,609.
