Montgomery County, IL Weather Forecast
County weather hub
Sunny
Compare major city weather across Montgomery County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 93. Southwest wind around 8 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
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 3:00 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Montgomery County
This Afternoon looks like the warmest upcoming period in Montgomery County at 93 degrees F.
Saturday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 17 to 22 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 3:00 PM 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
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southwest wind 2 to 6 mph. Chance of precipitation is 50%.
Showers and thunderstorms before 10am, then patchy fog and showers and thunderstorms likely between 10am and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. North wind around 3 mph. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Northeast wind around 3 mph. Chance of precipitation is 70%.
Rain showers likely before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 80. South wind 3 to 9 mph. Chance of precipitation is 100%.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Mostly sunny, with a high near 60.
Mostly clear, with a low around 36.
Sunny, with a high near 62.
Clear, with a low around 35.
Sunny, with a high near 69.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 73.
Mostly cloudy, with a low around 48.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 13
|
Sunny
|
93°F |
8 mph
SW
|
|
Tonight
Oct 13
|
Partly Cloudy then Chance Showers And Thunderstorms
|
69°F |
2 to 6 mph
SW
|
|
Wednesday
Oct 14
|
Showers And Thunderstorms
|
77°F |
3 mph
N
|
|
Wednesday Night
Oct 14
|
Showers And Thunderstorms Likely
|
62°F |
3 mph
NE
|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
80°F |
3 to 9 mph
S
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
46°F |
7 to 18 mph
W
|
|
Friday
Oct 16
|
Mostly Sunny
|
60°F |
17 to 22 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear
|
36°F |
2 to 15 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
62°F |
3 mph
NE
|
|
Saturday Night
Oct 17
|
Clear
|
35°F |
2 mph
SE
|
|
Sunday
Oct 18
|
Sunny
|
69°F |
3 to 7 mph
S
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
43°F |
6 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
73°F |
6 mph
S
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
48°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.
