Monthly outlook for Sag Harbor, NY: average high 58.9°, average low 51.3°. That is 0.7° above the climate normal for October. Precipitation is expected on 2 days (about 1.2 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 22 October (65°), the coolest 23 October (45.6°).
58.9°/51.3°
Average high / low
+0.7°
Above normal
2 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
59.1°
58.3°
+0.4°
31 October – 9 November
58.7°
55.9°
+1.5°
10 November – 19 November
at normal
52.4°
—
October records over 66 years
78.4°2 October 2019All-time high
34.3°27 October 1976All-time low
Thu, 2265° / 46°0
65 °
Sag Harbor, Thursday, 22 October
Overcast. High 65°, low 46°.
Pressure29.94 inHg
Wind15.1 mph NW
Humidity63%
Visibility6.2 mi
Dew point44°
Fri, 2355° / 46°0
55 °
Sag Harbor, Friday, 23 October
Clear. High 55°, low 46°.
Pressure30.39 inHg
Wind11.7 mph NE
Humidity57%
Visibility6.2 mi
Dew point35°
Sat, 2456° / 48°0
56 °
Sag Harbor, Saturday, 24 October
Partly cloudy. High 56°, low 48°.
Pressure30.56 inHg
Wind2.7 mph NW
Humidity60%
Visibility6.2 mi
Dew point37°
Sun, 2557° / 49°0
57 °
Sag Harbor, Sunday, 25 October
Clear. High 57°, low 49°.
Pressure30.56 inHg
Wind8.2 mph SW
Humidity91%
Visibility—
Dew point47°
Mon, 2659° / 52°0
59 °
Sag Harbor, Monday, 26 October
Mostly clear. High 59°, low 52°.
Pressure30.36 inHg
Wind10.1 mph W
Humidity91%
Visibility—
Dew point50°
Tue, 2757° / 50°0
57 °
Sag Harbor, Tuesday, 27 October
Clear. High 57°, low 50°.
Pressure30.39 inHg
Wind11.6 mph NE
Humidity63%
Visibility—
Dew point40°
Wed, 2857° / 50°0
57 °
Sag Harbor, Wednesday, 28 October
Overcast. High 57°, low 50°.
Pressure30.47 inHg
Wind11.5 mph S
Humidity60%
Visibility—
Dew point42°
Thu, 2965° / 56°0
65 °
Sag Harbor, Thursday, 29 October
Overcast. High 65°, low 56°.
Pressure30.27 inHg
Wind15.1 mph SW
Humidity80%
Visibility—
Dew point55°
Fri, 3060° / 50°0.06
60 °
Sag Harbor, Friday, 30 October
Light rain. High 60°, low 50°.
Pressure30.18 inHg
Wind15.2 mph NE
Humidity83%
Visibility—
Dew point52°
Sat, 3153° / 48°0
53 °
Sag Harbor, Saturday, 31 October
Clear. High 53°, low 48°.
Pressure30.53 inHg
Wind16.9 mph NE
Humidity57%
Visibility—
Dew point35°
Sun, 0157° / 50°0
57 °
Sag Harbor, Sunday, 1 November
Overcast. High 57°, low 50°.
Pressure30.68 inHg
Wind14.7 mph E
Humidity59%
Visibility—
Dew point39°
Mon, 0262° / 58°0
62 °
Sag Harbor, Monday, 2 November
Overcast. High 62°, low 58°.
Pressure30.45 inHg
Wind13.9 mph SE
Humidity76%
Visibility—
Dew point53°
Tue, 0362° / 58°0
62 °
Sag Harbor, Tuesday, 3 November
Overcast. High 62°, low 58°.
Pressure30.30 inHg
Wind14 mph E
Humidity71%
Visibility—
Dew point53°
Wed, 0457° / 56°0.02
57 °
Sag Harbor, Wednesday, 4 November
Light rain. High 57°, low 56°.
Pressure30.21 inHg
Wind23.8 mph E
Humidity87%
Visibility—
Dew point53°
Thu, 0560° / 56°1.13
60 °
Sag Harbor, Thursday, 5 November
Rain. High 60°, low 56°.
Pressure30.06 inHg
Wind24.5 mph E
Humidity95%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1851° / 44°0.08
51 °
Sag Harbor, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.08 in
Chance of precipitation22%
Record high62° (2021)
Record low32° (2020)
Thu, 1951° / 44°0.09
51 °
Sag Harbor, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high51°
Average low44°
Average precipitation0.09 in
Chance of precipitation23%
Record high63° (2021)
Record low29° (2008)
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.