Monthly outlook for Harbor Isle, NY: average high 59.6°, average low 49.6°. That is 0.9° above the climate normal for October. Precipitation is expected on 4 days (about 2.5 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 26 October (66.6°), the coolest 24 October (39.9°).
59.6°/49.6°
Average high / low
+0.9°
Above normal
4 / 4
Wet days / normal
2.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
61.6°
58.9°
+1.5°
3 November – 12 November
56.3°
55.6°
+0.4°
13 November – 22 November
at normal
51.1°
—
October records over 66 years
89.6°2 October 2019All-time high
32.7°27 October 1976All-time low
Sun, 2566° / 44°0
66 °
Harbor Isle, Sunday, 25 October
Clear. High 66°, low 44°.
Pressure30.56 inHg
Wind2 mph NW
Humidity35%
Visibility6.2 mi
Dew point33°
Mon, 2667° / 48°0
67 °
Harbor Isle, Monday, 26 October
Clear. High 67°, low 48°.
Pressure30.27 inHg
Wind5.1 mph W
Humidity50%
Visibility6.2 mi
Dew point42°
Tue, 2760° / 49°0
60 °
Harbor Isle, Tuesday, 27 October
Clear. High 60°, low 49°.
Pressure30.33 inHg
Wind6.8 mph N
Humidity44%
Visibility6.2 mi
Dew point35°
Wed, 2855° / 45°0
55 °
Harbor Isle, Wednesday, 28 October
Clear. High 55°, low 45°.
Pressure30.53 inHg
Wind7 mph NE
Humidity52%
Visibility—
Dew point34°
Thu, 2961° / 51°0
61 °
Harbor Isle, Thursday, 29 October
Clear. High 61°, low 51°.
Pressure30.39 inHg
Wind7.9 mph S
Humidity69%
Visibility—
Dew point48°
Fri, 3066° / 54°0
66 °
Harbor Isle, Friday, 30 October
Clear. High 66°, low 54°.
Pressure30.15 inHg
Wind15 mph N
Humidity65%
Visibility—
Dew point45°
Sat, 3159° / 54°0
59 °
Harbor Isle, Saturday, 31 October
Clear. High 59°, low 54°.
Pressure30.33 inHg
Wind16.2 mph N
Humidity66%
Visibility—
Dew point45°
Sun, 0157° / 52°0
57 °
Harbor Isle, Sunday, 1 November
Overcast. High 57°, low 52°.
Pressure30.39 inHg
Wind11.2 mph S
Humidity61%
Visibility—
Dew point41°
Mon, 0262° / 57°0.02
62 °
Harbor Isle, Monday, 2 November
Light rain. High 62°, low 57°.
Pressure30.09 inHg
Wind13.1 mph SW
Humidity76%
Visibility—
Dew point50°
Tue, 0361° / 57°0.08
61 °
Harbor Isle, Tuesday, 3 November
Light rain. High 61°, low 57°.
Pressure30.12 inHg
Wind13.4 mph SE
Humidity68%
Visibility—
Dew point48°
Wed, 0461° / 59°0.98
61 °
Harbor Isle, Wednesday, 4 November
Rain. High 61°, low 59°.
Pressure29.94 inHg
Wind14.7 mph S
Humidity96%
Visibility—
Dew point59°
Thu, 0563° / 60°1.34
63 °
Harbor Isle, Thursday, 5 November
Heavy rain. High 63°, low 60°.
Pressure29.62 inHg
Wind21.1 mph S
Humidity97%
Visibility—
Dew point62°
Fri, 0658° / 41°0.07
58 °
Harbor Isle, Friday, 6 November
Light rain. High 58°, low 41°.
Pressure29.68 inHg
Wind30.7 mph NW
Humidity60%
Visibility—
Dew point36°
Sat, 0746° / 41°0
46 °
Harbor Isle, Saturday, 7 November
Clear. High 46°, low 41°.
Pressure30.36 inHg
Wind18.1 mph NW
Humidity44%
Visibility—
Dew point22°
Sun, 0849° / 41°0
49 °
Harbor Isle, Sunday, 8 November
Mostly clear. High 49°, low 41°.
Pressure30.53 inHg
Wind13.4 mph SW
Humidity42%
Visibility—
Dew point21°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sat, 2150° / 39°0.11
50 °
Harbor Isle, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.11 in
Chance of precipitation30%
Record high64° (1991)
Record low21° (1987)
Sun, 2249° / 39°0.13
49 °
Harbor Isle, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.13 in
Chance of precipitation35%
Record high65° (2007)
Record low19° (2018)
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.