Monthly outlook for Harbor Isle, NY: average high 56.6°, average low 48°. That is 2.1° above the climate normal for November. Precipitation is expected on 1 day (about 0.7 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 6 November (66.8°), the coolest 15 November (37.7°).
56.6°/48°
Average high / low
+2.1°
Above normal
1 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
6 November – 15 November
54.9°
53.9°
+0.6°
16 November – 25 November
59.5°
50.2°
+5.1°
26 November – 5 December
at normal
48°
—
November records over 66 years
78.4°1 November 2024All-time high
16.7°23 November 2018All-time low
Sat, 0760° / 50°0
60 °
Harbor Isle, Saturday, 7 November
Overcast. High 60°, low 50°.
Pressure29.77 inHg
Wind7 mph W
Humidity71%
Visibility6.2 mi
Dew point53°
Sun, 0860° / 48°0
60 °
Harbor Isle, Sunday, 8 November
Partly cloudy. High 60°, low 48°.
Pressure29.88 inHg
Wind10.1 mph W
Humidity56%
Visibility6.2 mi
Dew point44°
Mon, 0956° / 48°0.01
56 °
Harbor Isle, Monday, 9 November
Light rain. High 56°, low 48°.
Pressure29.80 inHg
Wind14.7 mph W
Humidity55%
Visibility6.2 mi
Dew point40°
Tue, 1058° / 45°0
58 °
Harbor Isle, Tuesday, 10 November
Overcast. High 58°, low 45°.
Pressure29.97 inHg
Wind10.1 mph SW
Humidity70%
Visibility—
Dew point41°
Wed, 1157° / 46°0
57 °
Harbor Isle, Wednesday, 11 November
Mostly clear. High 57°, low 46°.
Pressure29.91 inHg
Wind9.4 mph W
Humidity70%
Visibility—
Dew point42°
Thu, 1251° / 45°0
51 °
Harbor Isle, Thursday, 12 November
Overcast. High 51°, low 45°.
Pressure29.88 inHg
Wind17.2 mph N
Humidity63%
Visibility—
Dew point38°
Fri, 1345° / 38°0
45 °
Harbor Isle, Friday, 13 November
Clear. High 45°, low 38°.
Pressure29.97 inHg
Wind13.5 mph N
Humidity44%
Visibility—
Dew point19°
Sat, 1445° / 39°0
45 °
Harbor Isle, Saturday, 14 November
Overcast. High 45°, low 39°.
Pressure30.00 inHg
Wind16.8 mph NW
Humidity48%
Visibility—
Dew point21°
Sun, 1551° / 38°0
51 °
Harbor Isle, Sunday, 15 November
Clear. High 51°, low 38°.
Pressure30.15 inHg
Wind16.2 mph W
Humidity48%
Visibility—
Dew point23°
Mon, 1659° / 47°0
59 °
Harbor Isle, Monday, 16 November
Clear. High 59°, low 47°.
Pressure30.15 inHg
Wind20.5 mph W
Humidity63%
Visibility—
Dew point37°
Tue, 1759° / 52°0
59 °
Harbor Isle, Tuesday, 17 November
Overcast. High 59°, low 52°.
Pressure30.27 inHg
Wind16 mph W
Humidity62%
Visibility—
Dew point42°
Wed, 1861° / 53°0
61 °
Harbor Isle, Wednesday, 18 November
Mostly clear. High 61°, low 53°.
Pressure30.36 inHg
Wind14.2 mph NW
Humidity60%
Visibility—
Dew point42°
Thu, 1954° / 49°0
54 °
Harbor Isle, Thursday, 19 November
Partly cloudy. High 54°, low 49°.
Pressure30.68 inHg
Wind14.7 mph NE
Humidity69%
Visibility—
Dew point42°
Fri, 2060° / 54°0
60 °
Harbor Isle, Friday, 20 November
Overcast. High 60°, low 54°.
Pressure30.50 inHg
Wind12.3 mph SW
Humidity79%
Visibility—
Dew point49°
Sat, 2163° / 55°0
63 °
Harbor Isle, Saturday, 21 November
Overcast. High 63°, low 55°.
Pressure30.33 inHg
Wind17.9 mph E
Humidity68%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 2348° / 37°0.11
48 °
Harbor Isle, Monday, 23 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.11 in
Chance of precipitation20%
Record high66° (1992)
Record low17° (2018)
Tue, 2450° / 38°0.09
50 °
Harbor Isle, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.09 in
Chance of precipitation27%
Record high65° (2014)
Record low21° (1989)
Wed, 2549° / 38°0.13
49 °
Harbor Isle, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.13 in
Chance of precipitation32%
Record high64° (1979)
Record low24° (2005)
Thu, 2651° / 39°0.19
51 °
Harbor Isle, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.19 in
Chance of precipitation45%
Record high63° (1999)
Record low28° (1993)
Fri, 2751° / 39°0.13
51 °
Harbor Isle, Friday, 27 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.13 in
Chance of precipitation33%
Record high62° (1988)
Record low27° (1974)
Sat, 2851° / 40°0.14
51 °
Harbor Isle, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.14 in
Chance of precipitation35%
Record high65° (1990)
Record low25° (1996)
Sun, 2949° / 38°0.09
49 °
Harbor Isle, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.09 in
Chance of precipitation30%
Record high63° (1990)
Record low26° (2023)
Mon, 3048° / 37°0.13
48 °
Harbor Isle, Monday, 30 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.13 in
Chance of precipitation35%
Record high64° (2001)
Record low24° (1976)
Tue, 0147° / 37°0.14
47 °
Harbor Isle, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.14 in
Chance of precipitation33%
Record high66° (2001)
Record low22° (1967)
Wed, 0247° / 36°0.12
47 °
Harbor Isle, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.12 in
Chance of precipitation30%
Record high60° (1970)
Record low21° (1971)
Thu, 0347° / 35°0.14
47 °
Harbor Isle, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.14 in
Chance of precipitation28%
Record high62° (1998)
Record low15° (1976)
Fri, 0446° / 35°0.1
46 °
Harbor Isle, Friday, 4 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.1 in
Chance of precipitation25%
Record high68° (1998)
Record low17° (1989)
Sat, 0544° / 35°0.16
44 °
Harbor Isle, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.16 in
Chance of precipitation30%
Record high65° (2001)
Record low20° (2025)
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.