Pontoon Beach, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pontoon Beach, a village in Madison County, Illinois.
Tonight
54°F
Rain
Rain and a slight chance of thunderstorms before 5am, then a chance of rain showers. Cloudy, with a low around 54. South wind 8 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
7-day forecast for Pontoon Beach
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain | 8 to 15 mph S | 96% |
| Wednesday | 64°F | Chance Rain Showers then Mostly Cloudy | 8 to 14 mph W | 12% |
| Wednesday Night | 45°F | Partly Cloudy | 6 mph SW | 0% |
| Thursday | 67°F | Sunny | 5 to 10 mph W | 1% |
| Thursday Night | 45°F | Mostly Cloudy | 5 mph NW | 8% |
| Friday | 59°F | Mostly Cloudy | 5 to 12 mph NW | 6% |
| Friday Night | 40°F | Partly Cloudy | 2 to 7 mph N | 1% |
| Saturday | 57°F | Partly Sunny | 5 mph NW | 0% |
| Saturday Night | 37°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 63°F | Sunny | 1 to 7 mph W | 8% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 5% |
| Monday | 67°F | Sunny | 2 to 7 mph SW | 2% |
| Monday Night | 42°F | Mostly Clear | 3 mph SW | 1% |
| Tuesday | 70°F | Sunny | 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Pontoon Beach (38.722, -90.064). Updated through the day.
Growing snapshot for Pontoon Beach
Last spring frost
Apr 8
First fall frost
Oct 26
Growing season
200 days
Hardiness zone
7a
More local growing data for Pontoon Beach: nearby ZIP 62040 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Alhambra
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Collinsville
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Highland
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Livingston
Madison
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Maryville
Mitchell
Moro
New Douglas
Prairietown
Rosewood Heights
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Wood River
Climate data from the nearest NOAA station, Cahokia St Louis Ap, Il (10.4 mi from Pontoon Beach). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.