Montgomery County, IL Weather Forecast
County weather hub
Clear
Compare major city weather across Montgomery County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Clear, with a low around 65. Northwest wind around 2 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
- Jul 14 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 6:17 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Montgomery County
Saturday looks like the warmest upcoming period in Montgomery County at 90 degrees F.
Overnight is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Saturday at about 5 to 9 mph W.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 6:17 AM CDT
- Coverage
- 7 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
Sunny, with a high near 88. Northeast wind 2 to 6 mph.
Clear, with a low around 67. Northeast wind 0 to 5 mph.
Sunny, with a high near 89. Northeast wind around 2 mph.
Clear, with a low around 69. East wind around 1 mph.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 71. Chance of precipitation is 30%.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly clear, with a low around 71. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 68. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 14
|
Clear
|
65°F |
2 mph
NW
|
|
Tuesday
Jul 14
|
Sunny
|
88°F |
2 to 6 mph
NE
|
|
Tuesday Night
Jul 14
|
Clear
|
67°F |
0 to 5 mph
NE
|
|
Wednesday
Jul 15
|
Sunny
|
89°F |
2 mph
NE
|
|
Wednesday Night
Jul 15
|
Clear
|
69°F |
1 mph
E
|
|
Thursday
Jul 16
|
Sunny then Chance Showers And Thunderstorms
|
89°F |
2 mph
S
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms then Mostly Clear
|
71°F |
1 mph
SW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
89°F |
1 to 6 mph
W
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
71°F |
3 mph
SW
|
|
Saturday
Jul 18
|
Sunny then Chance Showers And Thunderstorms
|
90°F |
5 to 9 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
71°F |
7 mph
W
|
|
Sunday
Jul 19
|
Slight Chance Showers And Thunderstorms
|
88°F |
9 mph
W
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
68°F |
3 to 7 mph
SW
|
|
Monday
Jul 20
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
87°F |
5 to 8 mph
W
|
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.
