Pontoon Beach, IL Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Pontoon Beach, IL in one place.
A chance of rain showers before 1pm. Mostly cloudy, with a high near 81. East wind 3 to 9 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Pontoon Beach, 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: May 28, 2026 11:18 PM CDT.
The active forecast window currently covers May 30 to Jun 4, 2026 for Pontoon Beach, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 30 to Jun 4, 2026
- Latest sync
- May 28, 2026 11:18 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Pontoon Beach
Monday looks like the warmest upcoming period in Pontoon Beach at 86 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Saturday at about 3 to 9 mph E.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- May 28, 2026 11:18 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 63. East wind around 8 mph.
Mostly sunny, with a high near 82.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly clear, with a low around 64. Chance of precipitation is 30%.
A chance of rain showers before 7am. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Mostly clear, with a low around 61.
Sunny, with a high near 83.
Mostly clear, with a low around 61.
Sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Chance Rain Showers
|
81°F |
3 to 9 mph
E
|
|
Saturday Night
May 30
|
Mostly Cloudy
|
63°F |
8 mph
E
|
|
Sunday
May 31
|
Mostly Sunny
|
82°F |
6 mph
E
|
|
Sunday Night
May 31
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
64°F |
1 to 7 mph
E
|
|
Monday
Jun 1
|
Slight Chance Showers And Thunderstorms
|
86°F |
2 to 6 mph
E
|
|
Monday Night
Jun 1
|
Chance Showers And Thunderstorms
|
64°F |
2 to 6 mph
E
|
|
Tuesday
Jun 2
|
Chance Rain Showers then Mostly Sunny
|
84°F |
3 to 9 mph
E
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
61°F |
3 to 9 mph
E
|
|
Wednesday
Jun 3
|
Sunny
|
83°F |
5 to 9 mph
E
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
61°F |
2 to 8 mph
SE
|
|
Thursday
Jun 4
|
Sunny
|
86°F |
2 to 8 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Pontoon Beach.