Pontoon Beach, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pontoon Beach, a village in Madison County, Illinois.
Today
88°F
Sunny
Sunny, with a high near 88. South wind around 6 mph.
7-day forecast for Pontoon Beach
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 6 mph S | 0% |
| Tonight | 68°F | Mostly Clear | 2 to 6 mph SE | 0% |
| Wednesday | 90°F | Sunny | 2 to 7 mph S | 11% |
| Wednesday Night | 72°F | Slight Chance Showers And Thunderstorms | 7 mph S | 69% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 6 mph S | 71% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 5 mph SE | 38% |
| Friday | 87°F | Chance Showers And Thunderstorms | 5 mph SW | 38% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 34% |
| Saturday | 89°F | Chance Showers And Thunderstorms then Mostly Sunny | 2 to 6 mph S | 34% |
| Saturday Night | 73°F | Mostly Clear | 6 mph S | 7% |
| Sunday | 92°F | Sunny | 5 to 9 mph S | 7% |
| Sunday Night | 74°F | Mostly Clear | 5 to 8 mph S | 5% |
| Monday | 93°F | Sunny | 5 to 9 mph S | 5% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms | 9 mph S | 15% |
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
Alton
Bethalto
Collinsville
East Alton
Edwardsville
Glen Carbon
Godfrey
Granite City
Grantfork
Hamel
Hartford
Highland
Holiday Shores
Livingston
Madison
Marine
Maryville
Mitchell
Moro
New Douglas
Prairietown
Rosewood Heights
Roxana
South Roxana
St. Jacob
Troy
Venice
Williamson
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 Aug 4, 2026.