Monthly outlook for Southold, NY: average high 59.3°, average low 51°. That is 0.4° above the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 17 October (63.8°), the coolest 18 October (39.3°).
59.3°/51°
Average high / low
+0.4°
Above normal
6 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
59.5°
59.3°
+0.1°
27 October – 5 November
59°
56.9°
+1.1°
6 November – 15 November
at normal
53.7°
—
October records over 66 years
78.4°2 October 2019All-time high
34.3°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Sag Harbor (7 mi).
Sun, 1857° / 39°0
57 °
Southold, Sunday, 18 October
Clear. High 57°, low 39°.
Pressure30.56 inHg
Wind12.3 mph N
Humidity47%
Visibility6.2 mi
Dew point33°
Mon, 1962° / 52°0
62 °
Southold, Monday, 19 October
Overcast. High 62°, low 52°.
Pressure30.42 inHg
Wind15.2 mph NE
Humidity59%
Visibility6.2 mi
Dew point42°
Tue, 2063° / 55°0
63 °
Southold, Tuesday, 20 October
Overcast. High 63°, low 55°.
Pressure30.18 inHg
Wind19.6 mph NE
Humidity63%
Visibility6.2 mi
Dew point47°
Wed, 2157° / 52°0
57 °
Southold, Wednesday, 21 October
Mostly clear. High 57°, low 52°.
Pressure30.27 inHg
Wind27.3 mph NE
Humidity74%
Visibility—
Dew point45°
Thu, 2258° / 50°0.02
58 °
Southold, Thursday, 22 October
Light rain. High 58°, low 50°.
Pressure30.09 inHg
Wind24.5 mph NE
Humidity74%
Visibility—
Dew point44°
Fri, 2360° / 52°0
60 °
Southold, Friday, 23 October
Clear. High 60°, low 52°.
Pressure30.18 inHg
Wind23.6 mph NE
Humidity54%
Visibility—
Dew point39°
Sat, 2458° / 48°0
58 °
Southold, Saturday, 24 October
Clear. High 58°, low 48°.
Pressure30.33 inHg
Wind22.1 mph NE
Humidity66%
Visibility—
Dew point40°
Sun, 2562° / 51°0
62 °
Southold, Sunday, 25 October
Overcast. High 62°, low 51°.
Pressure30.06 inHg
Wind20.2 mph N
Humidity55%
Visibility—
Dew point39°
Mon, 2656° / 46°0
56 °
Southold, Monday, 26 October
Clear. High 56°, low 46°.
Pressure30.15 inHg
Wind30.6 mph NW
Humidity55%
Visibility—
Dew point33°
Tue, 2757° / 49°0
57 °
Southold, Tuesday, 27 October
Overcast. High 57°, low 49°.
Pressure30.27 inHg
Wind11.9 mph W
Humidity46%
Visibility—
Dew point31°
Wed, 2859° / 54°0.1
59 °
Southold, Wednesday, 28 October
Light rain. High 59°, low 54°.
Pressure30.03 inHg
Wind15.5 mph SW
Humidity93%
Visibility—
Dew point53°
Thu, 2960° / 55°0.1
60 °
Southold, Thursday, 29 October
Light rain. High 60°, low 55°.
Pressure30.00 inHg
Wind16 mph NE
Humidity85%
Visibility—
Dew point52°
Fri, 3058° / 53°0.26
58 °
Southold, Friday, 30 October
Light rain. High 58°, low 53°.
Pressure30.06 inHg
Wind12.3 mph NE
Humidity88%
Visibility—
Dew point52°
Sat, 3161° / 59°0.26
61 °
Southold, Saturday, 31 October
Light rain. High 61°, low 59°.
Pressure29.71 inHg
Wind18.4 mph S
Humidity87%
Visibility—
Dew point57°
Sun, 0160° / 59°0.11
60 °
Southold, Sunday, 1 November
Light rain. High 60°, low 59°.
Pressure29.50 inHg
Wind23.2 mph N
Humidity95%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0257° / 51°0.1
57 °
Southold, Monday, 2 November
Climate normal for this date — 60-year average.
Average high57°
Average low51°
Average precipitation0.1 in
Chance of precipitation35%
Record high67° (1971)
Record low33° (1965)
Tue, 0357° / 49°0.15
57 °
Southold, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high57°
Average low49°
Average precipitation0.15 in
Chance of precipitation30%
Record high67° (1971)
Record low39° (1996)
Wed, 0456° / 49°0.06
56 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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 °
Southold, 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)
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 Southold, 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 Southold, 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.