Monthly outlook for Roslyn Harbor, NY: average high 55.4°, average low 45.3°. That is 3.1° above the climate normal for November. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 24 November (62.6°), the coolest 14 November (37°).
55.4°/45.3°
Average high / low
+3.1°
Above normal
3 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 November – 21 November
54°
50.5°
+1.9°
22 November – 1 December
57.6°
48.2°
+5.2°
2 December – 11 December
at normal
44.2°
—
November records over 66 years
78.3°1 November 2024All-time high
16.9°23 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Greenvale (1 mi).
Fri, 1350° / 42°0.42
50 °
Roslyn Harbor, Friday, 13 November
Rain. High 50°, low 42°.
Pressure29.59 inHg
Wind12.8 mph N
Humidity83%
Visibility3.3 mi
Dew point37°
Sat, 1446° / 37°0
46 °
Roslyn Harbor, Saturday, 14 November
Overcast. High 46°, low 37°.
Pressure29.80 inHg
Wind10.4 mph NW
Humidity58%
Visibility6.2 mi
Dew point27°
Sun, 1548° / 41°0
48 °
Roslyn Harbor, Sunday, 15 November
Partly cloudy. High 48°, low 41°.
Pressure30.09 inHg
Wind10.7 mph NW
Humidity55%
Visibility6.2 mi
Dew point31°
Mon, 1649° / 38°0
49 °
Roslyn Harbor, Monday, 16 November
Clear. High 49°, low 38°.
Pressure30.39 inHg
Wind6.3 mph NW
Humidity59%
Visibility6.2 mi
Dew point34°
Tue, 1753° / 38°0
53 °
Roslyn Harbor, Tuesday, 17 November
Clear. High 53°, low 38°.
Pressure30.47 inHg
Wind5.5 mph W
Humidity75%
Visibility—
Dew point37°
Wed, 1856° / 42°0
56 °
Roslyn Harbor, Wednesday, 18 November
Clear. High 56°, low 42°.
Pressure30.50 inHg
Wind5.1 mph W
Humidity52%
Visibility—
Dew point31°
Thu, 1957° / 45°0
57 °
Roslyn Harbor, Thursday, 19 November
Clear. High 57°, low 45°.
Pressure30.42 inHg
Wind5.7 mph SW
Humidity44%
Visibility—
Dew point30°
Fri, 2062° / 48°0
62 °
Roslyn Harbor, Friday, 20 November
Partly cloudy. High 62°, low 48°.
Pressure30.21 inHg
Wind7.8 mph W
Humidity41%
Visibility—
Dew point31°
Sat, 2158° / 49°0
58 °
Roslyn Harbor, Saturday, 21 November
Clear. High 58°, low 49°.
Pressure30.21 inHg
Wind11.6 mph NW
Humidity57%
Visibility—
Dew point40°
Sun, 2256° / 45°0
56 °
Roslyn Harbor, Sunday, 22 November
Partly cloudy. High 56°, low 45°.
Pressure30.33 inHg
Wind8.9 mph S
Humidity57%
Visibility—
Dew point35°
Mon, 2361° / 52°0
61 °
Roslyn Harbor, Monday, 23 November
Overcast. High 61°, low 52°.
Pressure30.15 inHg
Wind6.7 mph S
Humidity84%
Visibility—
Dew point51°
Tue, 2463° / 55°0
63 °
Roslyn Harbor, Tuesday, 24 November
Clear. High 63°, low 55°.
Pressure30.12 inHg
Wind5.2 mph E
Humidity79%
Visibility—
Dew point54°
Wed, 2561° / 54°0.33
61 °
Roslyn Harbor, Wednesday, 25 November
Rain. High 61°, low 54°.
Pressure29.94 inHg
Wind14.1 mph NW
Humidity98%
Visibility—
Dew point59°
Thu, 2651° / 43°0
51 °
Roslyn Harbor, Thursday, 26 November
Clear. High 51°, low 43°.
Pressure30.30 inHg
Wind14.5 mph NW
Humidity47%
Visibility—
Dew point28°
Fri, 2753° / 43°0
53 °
Roslyn Harbor, Friday, 27 November
Overcast. High 53°, low 43°.
Pressure30.56 inHg
Wind9.9 mph SE
Humidity44%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2850° / 39°0.14
50 °
Roslyn Harbor, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.14 in
Chance of precipitation37%
Record high64° (1973)
Record low25° (2002)
Sun, 2948° / 38°0.09
48 °
Roslyn Harbor, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.09 in
Chance of precipitation30%
Record high62° (1990)
Record low25° (2023)
Mon, 3047° / 37°0.12
47 °
Roslyn Harbor, Monday, 30 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.12 in
Chance of precipitation35%
Record high63° (2020)
Record low24° (1976)
Tue, 0147° / 36°0.14
47 °
Roslyn Harbor, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.14 in
Chance of precipitation33%
Record high65° (2001)
Record low22° (1967)
Wed, 0246° / 35°0.12
46 °
Roslyn Harbor, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.12 in
Chance of precipitation30%
Record high61° (2023)
Record low21° (1971)
Thu, 0346° / 35°0.14
46 °
Roslyn Harbor, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.14 in
Chance of precipitation30%
Record high60° (2009)
Record low15° (1976)
Fri, 0445° / 35°0.1
45 °
Roslyn Harbor, Friday, 4 December
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.1 in
Chance of precipitation25%
Record high67° (1998)
Record low17° (1989)
Sat, 0544° / 35°0.16
44 °
Roslyn Harbor, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.16 in
Chance of precipitation30%
Record high64° (2001)
Record low19° (2025)
Sun, 0645° / 35°0.15
45 °
Roslyn Harbor, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.15 in
Chance of precipitation43%
Record high66° (2001)
Record low23° (2007)
Mon, 0744° / 34°0.13
44 °
Roslyn Harbor, Monday, 7 December
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.13 in
Chance of precipitation30%
Record high69° (1998)
Record low22° (1964)
Tue, 0842° / 33°0.1
42 °
Roslyn Harbor, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high42°
Average low33°
Average precipitation0.1 in
Chance of precipitation35%
Record high58° (1966)
Record low20° (2006)
Wed, 0944° / 33°0.22
44 °
Roslyn Harbor, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.22 in
Chance of precipitation35%
Record high61° (1978)
Record low17° (1968)
Thu, 1044° / 34°0.12
44 °
Roslyn Harbor, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.12 in
Chance of precipitation35%
Record high59° (2023)
Record low11° (1968)
Fri, 1143° / 33°0.22
43 °
Roslyn Harbor, Friday, 11 December
Climate normal for this date — 60-year average.
Average high43°
Average low33°
Average precipitation0.22 in
Chance of precipitation42%
Record high64° (2021)
Record low15° (1977)
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 Roslyn Harbor, 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 Roslyn Harbor, 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.