Monthly outlook for Harbor Isle, NY: average high 56.1°, average low 47.8°. That is 2.1° above the climate normal for November. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 7 November (63.1°), the coolest 15 November (41.9°).
56.1°/47.8°
Average high / low
+2.1°
Above normal
3 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 November – 16 November
55.7°
53.5°
+1.2°
17 November – 26 November
56.8°
50.1°
+3.7°
27 November – 6 December
at normal
47.5°
—
November records over 66 years
78.4°1 November 2024All-time high
16.7°23 November 2018All-time low
Sun, 0860° / 49°0
60 °
Harbor Isle, Sunday, 8 November
Light rain. High 60°, low 49°.
Pressure29.85 inHg
Wind11.5 mph W
Humidity57%
Visibility6.2 mi
Dew point43°
Mon, 0956° / 48°0
56 °
Harbor Isle, Monday, 9 November
Overcast. High 56°, low 48°.
Pressure29.80 inHg
Wind14.5 mph NW
Humidity57%
Visibility6.2 mi
Dew point40°
Tue, 1056° / 45°0
56 °
Harbor Isle, Tuesday, 10 November
Overcast. High 56°, low 45°.
Pressure29.94 inHg
Wind8.4 mph SW
Humidity66%
Visibility6.2 mi
Dew point42°
Wed, 1156° / 47°0
56 °
Harbor Isle, Wednesday, 11 November
Mostly clear. High 56°, low 47°.
Pressure29.91 inHg
Wind6.2 mph NW
Humidity58%
Visibility6.2 mi
Dew point40°
Thu, 1258° / 47°0.16
58 °
Harbor Isle, Thursday, 12 November
Light rain. High 58°, low 47°.
Pressure29.65 inHg
Wind20.1 mph E
Humidity59%
Visibility—
Dew point41°
Fri, 1350° / 47°0.45
50 °
Harbor Isle, Friday, 13 November
Rain. High 50°, low 47°.
Pressure29.68 inHg
Wind31 mph NE
Humidity87%
Visibility—
Dew point46°
Sat, 1450° / 43°0.41
50 °
Harbor Isle, Saturday, 14 November
Rain. High 50°, low 43°.
Pressure29.47 inHg
Wind24.1 mph NE
Humidity87%
Visibility—
Dew point43°
Sun, 1552° / 42°0
52 °
Harbor Isle, Sunday, 15 November
Overcast. High 52°, low 42°.
Pressure29.91 inHg
Wind15.1 mph N
Humidity69%
Visibility—
Dew point35°
Mon, 1657° / 46°0
57 °
Harbor Isle, Monday, 16 November
Overcast. High 57°, low 46°.
Pressure30.09 inHg
Wind18.1 mph NW
Humidity61%
Visibility—
Dew point36°
Tue, 1753° / 47°0
53 °
Harbor Isle, Tuesday, 17 November
Clear. High 53°, low 47°.
Pressure30.33 inHg
Wind11.1 mph NW
Humidity69%
Visibility—
Dew point40°
Wed, 1858° / 51°0
58 °
Harbor Isle, Wednesday, 18 November
Overcast. High 58°, low 51°.
Pressure30.30 inHg
Wind12.3 mph SW
Humidity71%
Visibility—
Dew point44°
Thu, 1957° / 51°0
57 °
Harbor Isle, Thursday, 19 November
Mostly clear. High 57°, low 51°.
Pressure30.33 inHg
Wind10.7 mph NW
Humidity71%
Visibility—
Dew point43°
Fri, 2056° / 51°0
56 °
Harbor Isle, Friday, 20 November
Partly cloudy. High 56°, low 51°.
Pressure30.30 inHg
Wind11.5 mph SW
Humidity69%
Visibility—
Dew point43°
Sat, 2161° / 53°0
61 °
Harbor Isle, Saturday, 21 November
Overcast. High 61°, low 53°.
Pressure30.12 inHg
Wind13.2 mph SW
Humidity76%
Visibility—
Dew point47°
Sun, 2256° / 51°0
56 °
Harbor Isle, Sunday, 22 November
Overcast. High 56°, low 51°.
Pressure30.30 inHg
Wind11.4 mph N
Humidity60%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 0646° / 35°0.15
46 °
Harbor Isle, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.15 in
Chance of precipitation43%
Record high67° (2001)
Record low23° (2007)
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.