Monthly outlook for Pontoon Beach, IL: average high 66.4°, average low 51.4°. That is 3.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 29 October (78.4°), the coolest 6 November (40.3°).
66.4°/51.4°
Average high / low
+3.9°
Above normal
5 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
26 October – 4 November
70.5°
60.6°
+5.5°
5 November – 14 November
59.5°
55.6°
+2.2°
15 November – 24 November
at normal
52.3°
—
October records over 66 years
91.4°1 October 2019All-time high
28.6°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Edwardsville (6 mi).
Tue, 2776° / 52°0
76 °
Pontoon Beach, Tuesday, 27 October
Overcast. High 76°, low 52°.
Pressure30.24 inHg
Wind5.1 mph S
Humidity61%
Visibility6.2 mi
Dew point53°
Wed, 2875° / 53°0
75 °
Pontoon Beach, Wednesday, 28 October
Clear. High 75°, low 53°.
Pressure30.21 inHg
Wind5.6 mph S
Humidity58%
Visibility6.2 mi
Dew point55°
Thu, 2978° / 58°0.06
78 °
Pontoon Beach, Thursday, 29 October
Light rain. High 78°, low 58°.
Pressure30.15 inHg
Wind4.9 mph SW
Humidity58%
Visibility6.2 mi
Dew point58°
Fri, 3076° / 59°0
76 °
Pontoon Beach, Friday, 30 October
Overcast. High 76°, low 59°.
Pressure30.18 inHg
Wind4.4 mph SE
Humidity76%
Visibility6.2 mi
Dew point63°
Sat, 3168° / 61°0
68 °
Pontoon Beach, Saturday, 31 October
Overcast. High 68°, low 61°.
Pressure30.12 inHg
Wind9 mph SE
Humidity73%
Visibility—
Dew point57°
Sun, 0171° / 61°0.38
71 °
Pontoon Beach, Sunday, 1 November
Rain. High 71°, low 61°.
Pressure29.94 inHg
Wind11 mph SE
Humidity65%
Visibility—
Dew point56°
Mon, 0266° / 57°0.82
66 °
Pontoon Beach, Monday, 2 November
Rain. High 66°, low 57°.
Pressure29.83 inHg
Wind14.4 mph E
Humidity65%
Visibility—
Dew point53°
Tue, 0362° / 48°0.31
62 °
Pontoon Beach, Tuesday, 3 November
Rain. High 62°, low 48°.
Pressure29.59 inHg
Wind16.5 mph W
Humidity64%
Visibility—
Dew point40°
Wed, 0456° / 42°0
56 °
Pontoon Beach, Wednesday, 4 November
Overcast. High 56°, low 42°.
Pressure29.85 inHg
Wind13.8 mph NW
Humidity59%
Visibility—
Dew point40°
Thu, 0549° / 45°0.01
49 °
Pontoon Beach, Thursday, 5 November
Light rain. High 49°, low 45°.
Pressure30.06 inHg
Wind12.1 mph NW
Humidity71%
Visibility—
Dew point40°
Fri, 0658° / 40°0
58 °
Pontoon Beach, Friday, 6 November
Clear. High 58°, low 40°.
Pressure30.21 inHg
Wind8.5 mph N
Humidity42%
Visibility—
Dew point31°
Sat, 0760° / 43°0
60 °
Pontoon Beach, Saturday, 7 November
Overcast. High 60°, low 43°.
Pressure30.12 inHg
Wind14.1 mph S
Humidity45%
Visibility—
Dew point36°
Sun, 0868° / 52°0
68 °
Pontoon Beach, Sunday, 8 November
Overcast. High 68°, low 52°.
Pressure29.91 inHg
Wind18 mph S
Humidity48%
Visibility—
Dew point43°
Mon, 0962° / 52°0.28
62 °
Pontoon Beach, Monday, 9 November
Rain. High 62°, low 52°.
Pressure29.77 inHg
Wind10.2 mph NW
Humidity81%
Visibility—
Dew point54°
Tue, 1060° / 47°0.01
60 °
Pontoon Beach, Tuesday, 10 November
Light rain. High 60°, low 47°.
Pressure29.80 inHg
Wind16.1 mph NW
Humidity50%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1154° / 39°0.11
54 °
Pontoon Beach, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.11 in
Chance of precipitation27%
Record high74° (1989)
Record low23° (2019)
Thu, 1252° / 37°0.09
52 °
Pontoon Beach, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.09 in
Chance of precipitation25%
Record high72° (2010)
Record low12° (2019)
Fri, 1353° / 38°0.06
53 °
Pontoon Beach, Friday, 13 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.06 in
Chance of precipitation22%
Record high77° (1999)
Record low11° (1986)
Sat, 1454° / 39°0.1
54 °
Pontoon Beach, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.1 in
Chance of precipitation28%
Record high77° (1971)
Record low16° (1986)
Sun, 1554° / 39°0.13
54 °
Pontoon Beach, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.13 in
Chance of precipitation32%
Record high76° (2025)
Record low22° (2019)
Mon, 1653° / 38°0.11
53 °
Pontoon Beach, Monday, 16 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.11 in
Chance of precipitation23%
Record high71° (2001)
Record low24° (1997)
Tue, 1754° / 39°0.12
54 °
Pontoon Beach, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.12 in
Chance of precipitation25%
Record high75° (2016)
Record low14° (1997)
Wed, 1854° / 40°0.17
54 °
Pontoon Beach, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.17 in
Chance of precipitation32%
Record high70° (2024)
Record low14° (2014)
Thu, 1953° / 39°0.07
53 °
Pontoon Beach, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.07 in
Chance of precipitation32%
Record high72° (1985)
Record low21° (2022)
Fri, 2052° / 38°0.1
52 °
Pontoon Beach, Friday, 20 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation33%
Record high71° (2007)
Record low18° (1984)
Sat, 2151° / 38°0.1
51 °
Pontoon Beach, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.1 in
Chance of precipitation25%
Record high71° (1990)
Record low17° (1964)
Sun, 2251° / 37°0.09
51 °
Pontoon Beach, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.09 in
Chance of precipitation30%
Record high71° (2010)
Record low17° (1964)
Mon, 2351° / 36°0.1
51 °
Pontoon Beach, Monday, 23 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.1 in
Chance of precipitation27%
Record high66° (1966)
Record low18° (1970)
Tue, 2450° / 35°0.15
50 °
Pontoon Beach, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.15 in
Chance of precipitation28%
Record high69° (1966)
Record low16° (1970)
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.