Montgomery County, IL Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across Montgomery 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 a chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 40%.
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
- May 29 to May 30, 2026
- Latest sync
- May 24, 2026 12:18 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Montgomery County
Friday looks like the warmest upcoming period in Montgomery County at 77 degrees F.
Saturday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Friday at about 6 to 10 mph NE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 12:18 PM CDT
- Coverage
- 2 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
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 75. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 55. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
May 29
|
Chance Showers And Thunderstorms
|
77°F |
6 to 10 mph
NE
|
|
Friday Night
May 29
|
Chance Showers And Thunderstorms
|
56°F |
8 mph
NE
|
|
Saturday
May 30
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
75°F |
7 to 10 mph
NE
|
|
Saturday Night
May 30
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
55°F |
8 mph
NE
|
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.
