Fairmount, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Fairmount, IL in one place.
Sunny, with a high near 80. South wind 6 to 20 mph, with gusts as high as 28 mph.
Local Weather Overview
This forecast page for Fairmount, 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: Apr 21, 2026 2:25 PM CDT.
The active forecast window currently covers Apr 23 to Apr 27, 2026 for Fairmount, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 23 to Apr 27, 2026
- Latest sync
- Apr 21, 2026 2:25 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Fairmount
Thursday looks like the warmest upcoming period in Fairmount at 80 degrees F.
Saturday Night is the coolest period ahead with temperatures near 47 degrees F.
The strongest winds are forecast for Thursday at about 6 to 20 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 21, 2026 2:25 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- 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 after 1am. Partly cloudy, with a low around 61. South wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a high near 75. South southwest wind 12 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 80%.
A slight chance of rain showers before 1pm. Mostly sunny, with a high near 70.
Partly cloudy, with a low around 47.
Mostly sunny, with a high near 72.
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 23
|
Sunny
|
80°F |
6 to 20 mph
S
|
|
Thursday Night
Apr 23
|
Partly Cloudy then Chance Showers And Thunderstorms
|
61°F |
13 to 16 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms
|
75°F |
12 to 17 mph
SSW
|
|
Friday Night
Apr 24
|
Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
53°F |
7 to 10 mph
NW
|
|
Saturday
Apr 25
|
Slight Chance Rain Showers
|
70°F |
8 to 12 mph
NNE
|
|
Saturday Night
Apr 25
|
Partly Cloudy
|
47°F |
7 to 10 mph
NE
|
|
Sunday
Apr 26
|
Mostly Sunny
|
72°F |
8 to 12 mph
ENE
|
|
Sunday Night
Apr 26
|
Slight Chance Showers And Thunderstorms
|
53°F |
10 mph
E
|
|
Monday
Apr 27
|
Chance Showers And Thunderstorms
|
74°F |
10 to 16 mph
SE
|
|
Monday Night
Apr 27
|
Chance Showers And Thunderstorms
|
53°F |
13 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fairmount.