Monthly outlook for Harbor Isle, NY: average high 59.2°, average low 49°. That is 1.7° above the climate normal for October. Precipitation is expected on 2 days (about 1.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 30 October (69.8°), the coolest 8 November (40.1°).
59.2°/49°
Average high / low
+1.7°
Above normal
2 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
62.7°
57.4°
+2.9°
8 November – 17 November
53.3°
53.1°
+0.1°
18 November – 27 November
at normal
50.1°
—
October records over 66 years
89.6°2 October 2019All-time high
32.7°27 October 1976All-time low
Fri, 3070° / 50°0
70 °
Harbor Isle, Friday, 30 October
Clear. High 70°, low 50°.
Pressure30.06 inHg
Wind9.9 mph NW
Humidity58%
Visibility6.2 mi
Dew point52°
Sat, 3157° / 47°0
57 °
Harbor Isle, Saturday, 31 October
Mostly clear. High 57°, low 47°.
Pressure30.45 inHg
Wind6.4 mph NW
Humidity50%
Visibility6.2 mi
Dew point35°
Sun, 0158° / 44°0
58 °
Harbor Isle, Sunday, 1 November
Overcast. High 58°, low 44°.
Pressure30.50 inHg
Wind2.3 mph W
Humidity49%
Visibility6.2 mi
Dew point35°
Mon, 0263° / 49°0
63 °
Harbor Isle, Monday, 2 November
Clear. High 63°, low 49°.
Pressure30.39 inHg
Wind7.5 mph SW
Humidity59%
Visibility—
Dew point42°
Tue, 0364° / 52°0
64 °
Harbor Isle, Tuesday, 3 November
Overcast. High 64°, low 52°.
Pressure30.33 inHg
Wind6.1 mph W
Humidity57%
Visibility—
Dew point44°
Wed, 0458° / 57°0
58 °
Harbor Isle, Wednesday, 4 November
Light rain. High 58°, low 57°.
Pressure30.45 inHg
Wind20.3 mph E
Humidity78%
Visibility—
Dew point51°
Thu, 0564° / 58°0.07
64 °
Harbor Isle, Thursday, 5 November
Light rain. High 64°, low 58°.
Pressure30.15 inHg
Wind17.8 mph SE
Humidity79%
Visibility—
Dew point54°
Fri, 0665° / 62°1.04
65 °
Harbor Isle, Friday, 6 November
Rain. High 65°, low 62°.
Pressure29.62 inHg
Wind24.7 mph S
Humidity95%
Visibility—
Dew point64°
Sat, 0762° / 48°0.02
62 °
Harbor Isle, Saturday, 7 November
Light rain. High 62°, low 48°.
Pressure29.59 inHg
Wind21.4 mph NW
Humidity87%
Visibility—
Dew point55°
Sun, 0850° / 40°0
50 °
Harbor Isle, Sunday, 8 November
Clear. High 50°, low 40°.
Pressure30.06 inHg
Wind22 mph NW
Humidity49%
Visibility—
Dew point25°
Mon, 0955° / 42°0
55 °
Harbor Isle, Monday, 9 November
Clear. High 55°, low 42°.
Pressure30.12 inHg
Wind20.9 mph NW
Humidity51%
Visibility—
Dew point28°
Tue, 1053° / 49°0
53 °
Harbor Isle, Tuesday, 10 November
Overcast. High 53°, low 49°.
Pressure30.09 inHg
Wind9 mph N
Humidity45%
Visibility—
Dew point30°
Wed, 1153° / 50°0
53 °
Harbor Isle, Wednesday, 11 November
Overcast. High 53°, low 50°.
Pressure29.91 inHg
Wind14.6 mph N
Humidity59%
Visibility—
Dew point37°
Thu, 1252° / 46°0.01
52 °
Harbor Isle, Thursday, 12 November
Light rain. High 52°, low 46°.
Pressure29.80 inHg
Wind15.1 mph N
Humidity56%
Visibility—
Dew point32°
Fri, 1356° / 44°0
56 °
Harbor Isle, Friday, 13 November
Clear. High 56°, low 44°.
Pressure29.94 inHg
Wind14.2 mph NW
Humidity47%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.