Fairmont City, IL Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Fairmont City, IL in one place.
A slight chance of showers and thunderstorms. Sunny, with a high near 94. Heat index values as high as 105. West wind 5 to 10 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Fairmont City, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 17, 2026 12:05 AM CDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Fairmont City, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 12:05 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Fairmont City
Monday looks like the warmest upcoming period in Fairmont City at 96 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Saturday at about 5 to 10 mph W.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 12:05 AM CDT
- Coverage
- 6 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
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. West wind 3 to 9 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 74. Chance of precipitation is 20%.
Sunny, with a high near 96.
Partly cloudy, with a low around 78.
Mostly sunny, with a high near 96.
Partly cloudy, with a low around 72.
Mostly sunny, with a high near 87.
Partly cloudy, with a low around 66.
A slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Slight Chance Showers And Thunderstorms
|
94°F |
5 to 10 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
76°F |
3 to 9 mph
W
|
|
Sunday
Jul 19
|
Chance Showers And Thunderstorms
|
93°F |
5 mph
N
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
74°F |
1 to 5 mph
SE
|
|
Monday
Jul 20
|
Sunny
|
96°F |
2 to 6 mph
SW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
78°F |
7 mph
SW
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
96°F |
6 to 10 mph
NW
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
72°F |
7 to 10 mph
N
|
|
Wednesday
Jul 22
|
Mostly Sunny
|
87°F |
6 to 10 mph
NE
|
|
Wednesday Night
Jul 22
|
Partly Cloudy
|
66°F |
3 to 9 mph
NE
|
|
Thursday
Jul 23
|
Slight Chance Showers And Thunderstorms
|
87°F |
3 to 8 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fairmont City.