Monthly outlook for Harbor Isle, NY: average high 59.8°, average low 50.8°. That is 0.6° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 22 October (65.9°), the coolest 24 October (42.7°).
59.8°/50.8°
Average high / low
+0.6°
Above normal
0 / 4
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
61.2°
59.2°
+1.1°
1 November – 10 November
57.3°
56.7°
+0.3°
11 November – 20 November
at normal
51.9°
—
October records over 66 years
89.6°2 October 2019All-time high
32.7°27 October 1976All-time low
Fri, 2359° / 47°0
59 °
Harbor Isle, Friday, 23 October
Clear. High 59°, low 47°.
Pressure30.36 inHg
Wind6.6 mph N
Humidity47%
Visibility6.2 mi
Dew point33°
Sat, 2458° / 43°0
58 °
Harbor Isle, Saturday, 24 October
Overcast. High 58°, low 43°.
Pressure30.53 inHg
Wind3.2 mph NW
Humidity44%
Visibility6.2 mi
Dew point33°
Sun, 2561° / 43°0
61 °
Harbor Isle, Sunday, 25 October
Clear. High 61°, low 43°.
Pressure30.56 inHg
Wind1.2 mph NW
Humidity42%
Visibility6.2 mi
Dew point36°
Mon, 2665° / 47°0
65 °
Harbor Isle, Monday, 26 October
Clear. High 65°, low 47°.
Pressure30.33 inHg
Wind6.6 mph NW
Humidity52%
Visibility—
Dew point37°
Tue, 2756° / 49°0
56 °
Harbor Isle, Tuesday, 27 October
Clear. High 56°, low 49°.
Pressure30.39 inHg
Wind10.1 mph N
Humidity50%
Visibility—
Dew point34°
Wed, 2858° / 52°0
58 °
Harbor Isle, Wednesday, 28 October
Overcast. High 58°, low 52°.
Pressure30.33 inHg
Wind8.3 mph S
Humidity57%
Visibility—
Dew point39°
Thu, 2964° / 57°0
64 °
Harbor Isle, Thursday, 29 October
Overcast. High 64°, low 57°.
Pressure30.15 inHg
Wind12.5 mph SW
Humidity77%
Visibility—
Dew point52°
Fri, 3063° / 59°0
63 °
Harbor Isle, Friday, 30 October
Overcast. High 63°, low 59°.
Pressure30.18 inHg
Wind7.5 mph E
Humidity73%
Visibility—
Dew point52°
Sat, 3164° / 58°0
64 °
Harbor Isle, Saturday, 31 October
Overcast. High 64°, low 58°.
Pressure30.21 inHg
Wind11.4 mph E
Humidity88%
Visibility—
Dew point57°
Sun, 0165° / 60°0
65 °
Harbor Isle, Sunday, 1 November
Overcast. High 65°, low 60°.
Pressure29.94 inHg
Wind14.6 mph SW
Humidity85%
Visibility—
Dew point57°
Mon, 0261° / 56°0
61 °
Harbor Isle, Monday, 2 November
Overcast. High 61°, low 56°.
Pressure30.00 inHg
Wind15.2 mph NE
Humidity57%
Visibility—
Dew point44°
Tue, 0357° / 50°0
57 °
Harbor Isle, Tuesday, 3 November
Overcast. High 57°, low 50°.
Pressure30.30 inHg
Wind15.2 mph N
Humidity41%
Visibility—
Dew point29°
Wed, 0455° / 49°0
55 °
Harbor Isle, Wednesday, 4 November
Overcast. High 55°, low 49°.
Pressure30.39 inHg
Wind17 mph N
Humidity42%
Visibility—
Dew point29°
Thu, 0550° / 44°0
50 °
Harbor Isle, Thursday, 5 November
Overcast. High 50°, low 44°.
Pressure30.62 inHg
Wind17.1 mph NE
Humidity48%
Visibility—
Dew point27°
Fri, 0656° / 49°0
56 °
Harbor Isle, Friday, 6 November
Light rain. High 56°, low 49°.
Pressure30.53 inHg
Wind14.3 mph E
Humidity62%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0756° / 44°0.09
56 °
Harbor Isle, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.09 in
Chance of precipitation25%
Record high75° (2022)
Record low33° (1962)
Sun, 0855° / 44°0.15
55 °
Harbor Isle, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.15 in
Chance of precipitation27%
Record high71° (2020)
Record low32° (2019)
Mon, 0955° / 43°0.08
55 °
Harbor Isle, Monday, 9 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.08 in
Chance of precipitation25%
Record high68° (1975)
Record low24° (2019)
Tue, 1056° / 44°0.16
56 °
Harbor Isle, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.16 in
Chance of precipitation37%
Record high68° (1999)
Record low27° (2017)
Wed, 1154° / 44°0.13
54 °
Harbor Isle, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.13 in
Chance of precipitation35%
Record high69° (2024)
Record low25° (2017)
Thu, 1253° / 42°0.14
53 °
Harbor Isle, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.14 in
Chance of precipitation38%
Record high69° (2022)
Record low29° (2019)
Fri, 1352° / 41°0.2
52 °
Harbor Isle, Friday, 13 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.2 in
Chance of precipitation37%
Record high69° (1964)
Record low24° (2019)
Sat, 1452° / 41°0.09
52 °
Harbor Isle, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.09 in
Chance of precipitation23%
Record high67° (1989)
Record low25° (2019)
Sun, 1553° / 41°0.11
53 °
Harbor Isle, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.11 in
Chance of precipitation38%
Record high72° (1993)
Record low26° (1967)
Mon, 1652° / 40°0.12
52 °
Harbor Isle, Monday, 16 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.12 in
Chance of precipitation32%
Record high68° (2001)
Record low24° (1967)
Tue, 1751° / 40°0.11
51 °
Harbor Isle, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.11 in
Chance of precipitation32%
Record high65° (2006)
Record low29° (1967)
Wed, 1851° / 40°0.07
51 °
Harbor Isle, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.07 in
Chance of precipitation25%
Record high64° (1963)
Record low28° (2014)
Thu, 1951° / 40°0.08
51 °
Harbor Isle, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.08 in
Chance of precipitation25%
Record high64° (1985)
Record low24° (2014)
Fri, 2051° / 40°0.12
51 °
Harbor Isle, Friday, 20 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.12 in
Chance of precipitation27%
Record high69° (1985)
Record low28° (1984)
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 Harbor Isle, NY 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 Harbor Isle, NY 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.