Fountain Green, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Fountain Green, IL in one place.
Sunny. High near 94, with temperatures falling to around 92 in the afternoon. Heat index values as high as 101. West wind 5 to 10 mph.
Local Weather Overview
This forecast page for Fountain Green, 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 4:48 PM CDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Fountain Green, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 4:48 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Fountain Green
Saturday looks like the warmest upcoming period in Fountain Green at 94 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 15 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 4:48 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
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 before 9pm. Partly cloudy, with a low around 71. North wind 0 to 5 mph. Chance of precipitation is 30%.
Mostly sunny, with a high near 88.
Mostly clear, with a low around 70.
Sunny, with a high near 93.
A chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 75. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7am. Sunny, with a high near 89. Chance of precipitation is 40%.
Mostly clear, with a low around 64.
Sunny, with a high near 81.
Mostly clear, with a low around 60.
A slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 83.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Sunny
|
94°F |
5 to 10 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms then Partly Cloudy
|
71°F |
0 to 5 mph
N
|
|
Sunday
Jul 19
|
Mostly Sunny
|
88°F |
5 mph
E
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
70°F |
5 mph
SE
|
|
Monday
Jul 20
|
Sunny
|
93°F |
5 to 10 mph
S
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
75°F |
10 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Sunny
|
89°F |
10 to 15 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
64°F |
5 to 15 mph
NW
|
|
Wednesday
Jul 22
|
Sunny
|
81°F |
5 to 10 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
60°F |
0 to 10 mph
NE
|
|
Thursday
Jul 23
|
Slight Chance Rain Showers
|
83°F |
0 to 5 mph
NW
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
62°F |
0 to 5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fountain Green.