As of 16:29 EDT

Weather in Setauket, NY

65°

Setauket, Saturday, 10 October, 16:29

Overcast. Feels like 64°. High 66°, low 50°.

Pressure30.39 inHg

Wind10.4 mph SE

Humidity59%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Monthly outlook for Setauket, NY: average high 60.5°, average low 51.1°. That is 0.4° below the climate normal for October. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 14 October (71.6°), the coolest 20 October (43.1°).

60.5°/51.1°

Average high / low

−0.4°

Below normal

5 / 4

Wet days / normal

1.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	64.2°	62°	+1.2°
20 October – 29 October	54.4°	59.1°	-2.6°
30 October – 8 November	at normal	56°	—

October records over 66 years

89.4°2 October 2019All-time high

32.7°27 October 1976All-time low

Climate normals and records are computed from the nearest reference point — Stony Brook University (3 mi).

Sun, 1166° / 48°

0.33

66 °

Setauket, Sunday, 11 October

Rain. High 66°, low 48°.

Pressure30.30 inHg

Wind14.4 mph E

Humidity74%

Visibility3.7 mi

Dew point53°

Mon, 1267° / 50°

0.26

67 °

Setauket, Monday, 12 October

Rain. High 67°, low 50°.

Pressure29.74 inHg

Wind15.4 mph N

Humidity85%

Visibility6.2 mi

Dew point57°

Tue, 1367° / 62°

67 °

Setauket, Tuesday, 13 October

Clear. High 67°, low 62°.

Pressure29.94 inHg

Wind4.3 mph E

Humidity87%

Visibility6.2 mi

Dew point60°

Wed, 1472° / 66°

72 °

Setauket, Wednesday, 14 October

Clear. High 72°, low 66°.

Pressure29.83 inHg

Wind8.4 mph W

Humidity84%

Visibility6.2 mi

Dew point64°

Thu, 1564° / 58°

64 °

Setauket, Thursday, 15 October

Partly cloudy. High 64°, low 58°.

Pressure30.15 inHg

Wind17.5 mph N

Humidity65%

Visibility—

Dew point50°

Fri, 1666° / 55°

0.78

66 °

Setauket, Friday, 16 October

Rain. High 66°, low 55°.

Pressure30.03 inHg

Wind14.5 mph SW

Humidity79%

Visibility—

Dew point51°

Sat, 1766° / 53°

0.07

66 °

Setauket, Saturday, 17 October

Light rain. High 66°, low 53°.

Pressure29.85 inHg

Wind16.3 mph W

Humidity88%

Visibility—

Dew point62°

Sun, 1856° / 46°

0.1

56 °

Setauket, Sunday, 18 October

Light rain. High 56°, low 46°.

Pressure29.97 inHg

Wind20.7 mph NW

Humidity73%

Visibility—

Dew point44°

Mon, 1951° / 43°

51 °

Setauket, Monday, 19 October

Mostly clear. High 51°, low 43°.

Pressure30.45 inHg

Wind17.6 mph N

Humidity57%

Visibility—

Dew point32°

Tue, 2050° / 43°

50 °

Setauket, Tuesday, 20 October

Clear. High 50°, low 43°.

Pressure30.56 inHg

Wind13.7 mph N

Humidity43%

Visibility—

Dew point24°

Wed, 2153° / 47°

53 °

Setauket, Wednesday, 21 October

Overcast. High 53°, low 47°.

Pressure30.53 inHg

Wind7.4 mph SE

Humidity53%

Visibility—

Dew point32°

Thu, 2255° / 49°

55 °

Setauket, Thursday, 22 October

Clear. High 55°, low 49°.

Pressure30.62 inHg

Wind9 mph E

Humidity59%

Visibility—

Dew point38°

Fri, 2354° / 48°

54 °

Setauket, Friday, 23 October

Clear. High 54°, low 48°.

Pressure30.47 inHg

Wind11.1 mph NE

Humidity61%

Visibility—

Dew point37°

Sat, 2459° / 50°

59 °

Setauket, Saturday, 24 October

Overcast. High 59°, low 50°.

Pressure30.33 inHg

Wind10.3 mph N

Humidity55%

Visibility—

Dew point36°

Sun, 2556° / 50°

56 °

Setauket, Sunday, 25 October

Mostly clear. High 56°, low 50°.

Pressure30.12 inHg

Wind13.8 mph NW

Humidity56%

Visibility—

Dew point37°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 2658° / 49°

0.16

58 °

Setauket, Monday, 26 October

Climate normal for this date — 60-year average.

Average high58°

Average low49°

Average precipitation0.16 in

Chance of precipitation35%

Record high76° (2023)

Record low37° (1962)

Tue, 2758° / 49°

0.16

58 °

Setauket, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high58°

Average low49°

Average precipitation0.16 in

Chance of precipitation27%

Record high75° (2023)

Record low33° (1976)

Wed, 2858° / 48°

0.17

58 °

Setauket, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high58°

Average low48°

Average precipitation0.17 in

Chance of precipitation33%

Record high79° (2023)

Record low33° (1976)

Thu, 2956° / 47°

0.19

56 °

Setauket, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high56°

Average low47°

Average precipitation0.19 in

Chance of precipitation25%

Record high72° (1984)

Record low34° (1965)

Fri, 3056° / 46°

0.12

56 °

Setauket, Friday, 30 October

Climate normal for this date — 60-year average.

Average high56°

Average low46°

Average precipitation0.12 in

Chance of precipitation25%

Record high72° (2024)

Record low36° (2011)

Sat, 3157° / 47°

0.06

57 °

Setauket, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high57°

Average low47°

Average precipitation0.06 in

Chance of precipitation23%

Record high78° (2024)

Record low35° (2020)

Sun, 0158° / 49°

0.14

58 °

Setauket, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high58°

Average low49°

Average precipitation0.14 in

Chance of precipitation30%

Record high80° (2024)

Record low37° (1976)

Mon, 0257° / 48°

0.08

57 °

Setauket, Monday, 2 November

Climate normal for this date — 60-year average.

Average high57°

Average low48°

Average precipitation0.08 in

Chance of precipitation32%

Record high70° (2017)

Record low32° (1965)

Tue, 0357° / 47°

0.12

57 °

Setauket, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high57°

Average low47°

Average precipitation0.12 in

Chance of precipitation30%

Record high71° (2017)

Record low37° (1996)

Wed, 0456° / 46°

0.05

56 °

Setauket, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°

Average low46°

Average precipitation0.05 in

Chance of precipitation27%

Record high70° (2022)

Record low36° (2013)

Thu, 0556° / 46°

0.15

56 °

Setauket, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high56°

Average low46°

Average precipitation0.15 in

Chance of precipitation28%

Record high73° (2022)

Record low37° (1965)

Fri, 0655° / 46°

0.11

55 °

Setauket, Friday, 6 November

Climate normal for this date — 60-year average.

Average high55°

Average low46°

Average precipitation0.11 in

Chance of precipitation30%

Record high75° (2024)

Record low35° (1962)

Sat, 0755° / 45°

0.1

55 °

Setauket, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°

Average low45°

Average precipitation0.1 in

Chance of precipitation25%

Record high75° (2022)

Record low34° (2025)

Sun, 0854° / 44°

0.17

54 °

Setauket, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high54°

Average low44°

Average precipitation0.17 in

Chance of precipitation30%

Record high72° (2020)

Record low32° (2019)

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 Setauket, 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 Setauket, 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.