Weather in Pontoon Beach, IL
Pontoon Beach, Tuesday, 20 October, 04:59
Partly cloudy. Feels like 49°. High 74°, low 49°.
Monthly outlook for Pontoon Beach, IL: average high 63.6°, average low 46.3°. That is 0.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 25 October (76.9°), the coolest 28 October (30.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 67.9° | 63.2° | +2.6° |
| 30 October – 8 November | 56.5° | 59° | -1.4° |
| 9 November – 18 November | at normal | 54.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (6 mi).
0
Pontoon Beach, Wednesday, 21 October
Clear. High 76°, low 47°.
0Pontoon Beach, Thursday, 22 October
Clear. High 73°, low 51°.
0Pontoon Beach, Friday, 23 October
Clear. High 71°, low 52°.
0
Pontoon Beach, Saturday, 24 October
Overcast. High 73°, low 52°.
0Pontoon Beach, Sunday, 25 October
Overcast. High 77°, low 55°.
0Pontoon Beach, Monday, 26 October
Overcast. High 75°, low 59°.
0Pontoon Beach, Tuesday, 27 October
Overcast. High 57°, low 47°.
0Pontoon Beach, Wednesday, 28 October
Clear. High 47°, low 31°.
0.02
Pontoon Beach, Thursday, 29 October
Light rain. High 56°, low 33°.
0.33Pontoon Beach, Friday, 30 October
Rain. High 47°, low 42°.
0
Pontoon Beach, Saturday, 31 October
Partly cloudy. High 63°, low 46°.
0.34Pontoon Beach, Sunday, 1 November
Rain. High 52°, low 47°.
0.45Pontoon Beach, Monday, 2 November
Rain. High 59°, low 48°.
0Pontoon Beach, Tuesday, 3 November
Overcast. High 57°, low 41°.
0Pontoon Beach, Wednesday, 4 November
Partly cloudy. High 62°, low 42°.
0.16Pontoon Beach, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09
Pontoon Beach, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Pontoon Beach, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04
Pontoon Beach, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Pontoon Beach, Monday, 9 November
Climate normal for this date — 60-year average.
0.13Pontoon Beach, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.11Pontoon Beach, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.09Pontoon Beach, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Pontoon Beach, Friday, 13 November
Climate normal for this date — 60-year average.
0.1Pontoon Beach, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Pontoon Beach, Sunday, 15 November
Climate normal for this date — 60-year average.
0.11Pontoon Beach, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Pontoon Beach, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.17Pontoon Beach, Wednesday, 18 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Pontoon Beach, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Pontoon Beach, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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