Fountain Green, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms then Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Fountain Green, IL in one place.
Showers and thunderstorms before 9am, then showers and thunderstorms likely between 9am and 4pm. Mostly cloudy, with a high near 77. East wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
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: Sep 15, 2026 2:15 PM CDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Fountain Green, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 2:15 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Fountain Green
Thursday looks like the warmest upcoming period in Fountain Green at 86 degrees F.
Monday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph SW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 2:15 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 slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70. East wind around 5 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 40%.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 69.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 75. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
A slight chance of rain showers before 7am. Partly sunny, with a high near 72.
Partly cloudy, with a low around 55.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Showers And Thunderstorms then Showers And Thunderstorms Likely
|
77°F |
5 mph
E
|
|
Wednesday Night
Sep 16
|
Slight Chance Showers And Thunderstorms
|
70°F |
5 mph
E
|
|
Thursday
Sep 17
|
Chance Showers And Thunderstorms
|
86°F |
5 mph
NW
|
|
Thursday Night
Sep 17
|
Partly Cloudy then Chance Showers And Thunderstorms
|
68°F |
5 mph
NE
|
|
Friday
Sep 18
|
Chance Showers And Thunderstorms
|
86°F |
5 to 10 mph
SE
|
|
Friday Night
Sep 18
|
Partly Cloudy then Slight Chance Rain Showers
|
69°F |
5 to 10 mph
SE
|
|
Saturday
Sep 19
|
Chance Rain Showers
|
84°F |
10 to 15 mph
SW
|
|
Saturday Night
Sep 19
|
Showers And Thunderstorms Likely
|
64°F |
5 to 10 mph
NW
|
|
Sunday
Sep 20
|
Rain Showers Likely
|
75°F |
5 to 10 mph
N
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
59°F |
5 to 10 mph
NE
|
|
Monday
Sep 21
|
Slight Chance Rain Showers then Partly Sunny
|
72°F |
5 to 10 mph
NE
|
|
Monday Night
Sep 21
|
Partly Cloudy
|
55°F |
5 to 10 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fountain Green.