Monthly outlook for Sag Harbor, NY: average high 57.7°, average low 46.6°. That is 0.3° below the climate normal for October. Precipitation is expected on 2 days (about 3.0 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 20 October (65°), the coolest 19 October (36.2°).
57.7°/46.6°
Average high / low
−0.3°
Below normal
2 / 5
Wet days / normal
3.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
58.6°
59°
-0.2°
29 October – 7 November
56.2°
56.4°
-0.1°
8 November – 17 November
at normal
53°
—
October records over 66 years
78.4°2 October 2019All-time high
34.3°27 October 1976All-time low
Tue, 2065° / 40°0
65 °
Sag Harbor, Tuesday, 20 October
Clear. High 65°, low 40°.
Pressure30.24 inHg
Wind18.9 mph NE
Humidity64%
Visibility6.2 mi
Dew point47°
Wed, 2155° / 39°0
55 °
Sag Harbor, Wednesday, 21 October
Overcast. High 55°, low 39°.
Pressure30.21 inHg
Wind24 mph NE
Humidity72%
Visibility6.2 mi
Dew point45°
Thu, 2261° / 50°0
61 °
Sag Harbor, Thursday, 22 October
Clear. High 61°, low 50°.
Pressure29.88 inHg
Wind14 mph NW
Humidity64%
Visibility6.2 mi
Dew point43°
Fri, 2352° / 47°0
52 °
Sag Harbor, Friday, 23 October
Clear. High 52°, low 47°.
Pressure30.15 inHg
Wind22 mph N
Humidity62%
Visibility6.2 mi
Dew point37°
Sat, 2456° / 46°0
56 °
Sag Harbor, Saturday, 24 October
Clear. High 56°, low 46°.
Pressure30.45 inHg
Wind17.7 mph N
Humidity67%
Visibility—
Dew point36°
Sun, 2559° / 49°0
59 °
Sag Harbor, Sunday, 25 October
Clear. High 59°, low 49°.
Pressure30.53 inHg
Wind11.7 mph SW
Humidity56%
Visibility—
Dew point39°
Mon, 2661° / 52°0
61 °
Sag Harbor, Monday, 26 October
Clear. High 61°, low 52°.
Pressure30.30 inHg
Wind15 mph SW
Humidity57%
Visibility—
Dew point42°
Tue, 2760° / 54°0
60 °
Sag Harbor, Tuesday, 27 October
Clear. High 60°, low 54°.
Pressure30.21 inHg
Wind12 mph N
Humidity56%
Visibility—
Dew point42°
Wed, 2853° / 44°0.28
53 °
Sag Harbor, Wednesday, 28 October
Light rain. High 53°, low 44°.
Pressure30.12 inHg
Wind19.8 mph N
Humidity87%
Visibility—
Dew point45°
Thu, 2948° / 41°0.02
48 °
Sag Harbor, Thursday, 29 October
Light rain. High 48°, low 41°.
Pressure30.09 inHg
Wind19.5 mph N
Humidity60%
Visibility—
Dew point30°
Fri, 3054° / 45°0
54 °
Sag Harbor, Friday, 30 October
Clear. High 54°, low 45°.
Pressure30.24 inHg
Wind15 mph NW
Humidity61%
Visibility—
Dew point35°
Sat, 3157° / 47°0
57 °
Sag Harbor, Saturday, 31 October
Partly cloudy. High 57°, low 47°.
Pressure30.39 inHg
Wind14 mph SW
Humidity56%
Visibility—
Dew point39°
Sun, 0160° / 53°0
60 °
Sag Harbor, Sunday, 1 November
Overcast. High 60°, low 53°.
Pressure30.33 inHg
Wind15.5 mph SW
Humidity61%
Visibility—
Dew point45°
Mon, 0262° / 55°0
62 °
Sag Harbor, Monday, 2 November
Overcast. High 62°, low 55°.
Pressure30.24 inHg
Wind15.2 mph NE
Humidity70%
Visibility—
Dew point50°
Tue, 0356° / 48°2.72
56 °
Sag Harbor, Tuesday, 3 November
Heavy rain. High 56°, low 48°.
Pressure29.88 inHg
Wind41.2 mph N
Humidity91%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0456° / 49°0.06
56 °
Sag Harbor, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low49°
Average precipitation0.06 in
Chance of precipitation23%
Record high65° (1975)
Record low38° (1989)
Thu, 0556° / 49°0.17
56 °
Sag Harbor, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low49°
Average precipitation0.17 in
Chance of precipitation37%
Record high66° (2022)
Record low37° (1965)
Fri, 0655° / 49°0.14
55 °
Sag Harbor, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low49°
Average precipitation0.14 in
Chance of precipitation38%
Record high69° (2024)
Record low37° (1962)
Sat, 0755° / 47°0.09
55 °
Sag Harbor, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.09 in
Chance of precipitation32%
Record high72° (2022)
Record low35° (1962)
Sun, 0854° / 46°0.16
54 °
Sag Harbor, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low46°
Average precipitation0.16 in
Chance of precipitation37%
Record high66° (2020)
Record low34° (2019)
Mon, 0954° / 47°0.09
54 °
Sag Harbor, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low47°
Average precipitation0.09 in
Chance of precipitation33%
Record high64° (1989)
Record low31° (1971)
Tue, 1055° / 47°0.2
55 °
Sag Harbor, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.2 in
Chance of precipitation42%
Record high64° (1977)
Record low30° (2017)
Wed, 1154° / 46°0.18
54 °
Sag Harbor, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high54°
Average low46°
Average precipitation0.18 in
Chance of precipitation35%
Record high67° (2024)
Record low28° (2017)
Thu, 1253° / 45°0.19
53 °
Sag Harbor, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high53°
Average low45°
Average precipitation0.19 in
Chance of precipitation42%
Record high69° (2022)
Record low32° (2019)
Fri, 1352° / 44°0.24
52 °
Sag Harbor, Friday, 13 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.24 in
Chance of precipitation42%
Record high62° (1964)
Record low27° (2019)
Sat, 1451° / 44°0.13
51 °
Sag Harbor, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.13 in
Chance of precipitation23%
Record high61° (2009)
Record low28° (1986)
Sun, 1553° / 44°0.14
53 °
Sag Harbor, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.14 in
Chance of precipitation42%
Record high65° (1993)
Record low27° (1967)
Mon, 1652° / 44°0.17
52 °
Sag Harbor, Monday, 16 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.17 in
Chance of precipitation37%
Record high64° (2006)
Record low26° (1967)
Tue, 1751° / 44°0.17
51 °
Sag Harbor, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.17 in
Chance of precipitation32%
Record high64° (2006)
Record low32° (1980)
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 Sag 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 Sag 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.