As of 08:45 EST

Weather in Islip Terrace, NY

63°

Islip Terrace, Friday, 6 November, 08:45

Thunderstorm. Feels like 64°. High 66°, low 60°.

Pressure29.85 inHg

Wind8.1 mph E

Humidity92%

Visibility2.0 mi

Dew point61°

See detailed hourly forecast

Monthly outlook for Islip Terrace, NY: average high 56.1°, average low 46.4°. That is 1.9° above the climate normal for November. Precipitation is expected on 1 day (about 2.5 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 6 November (66.4°), the coolest 15 November (36.5°).

56.1°/46.4°

Average high / low

+1.9°

Above normal

1 / 5

Wet days / normal

2.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
6 November – 15 November	53.7°	53.6°	+0.1°
16 November – 25 November	60°	50.1°	+5.5°
26 November – 5 December	at normal	48°	—

November records over 66 years

75.2°1 November 2024All-time high

19.8°23 November 2018All-time low

Climate normals and records are computed from the nearest reference point — Islip (1 mi).

Sat, 0760° / 49°

0.02

60 °

Islip Terrace, Saturday, 7 November

Light rain. High 60°, low 49°.

Pressure29.77 inHg

Wind4.5 mph W

Humidity83%

Visibility6.2 mi

Dew point57°

Sun, 0860° / 46°

60 °

Islip Terrace, Sunday, 8 November

Partly cloudy. High 60°, low 46°.

Pressure29.85 inHg

Wind11.3 mph W

Humidity57%

Visibility6.2 mi

Dew point44°

Mon, 0955° / 46°

0.01

55 °

Islip Terrace, Monday, 9 November

Light rain. High 55°, low 46°.

Pressure29.77 inHg

Wind13.4 mph W

Humidity58%

Visibility6.2 mi

Dew point41°

Tue, 1055° / 43°

55 °

Islip Terrace, Tuesday, 10 November

Overcast. High 55°, low 43°.

Pressure29.97 inHg

Wind8.1 mph SW

Humidity72%

Visibility—

Dew point41°

Wed, 1156° / 44°

56 °

Islip Terrace, Wednesday, 11 November

Mostly clear. High 56°, low 44°.

Pressure29.88 inHg

Wind9.6 mph NW

Humidity69%

Visibility—

Dew point41°

Thu, 1250° / 44°

0.02

50 °

Islip Terrace, Thursday, 12 November

Light rain. High 50°, low 44°.

Pressure29.88 inHg

Wind10.4 mph N

Humidity68%

Visibility—

Dew point40°

Fri, 1343° / 37°

43 °

Islip Terrace, Friday, 13 November

Mostly clear. High 43°, low 37°.

Pressure29.97 inHg

Wind10.8 mph N

Humidity40%

Visibility—

Dew point17°

Sat, 1443° / 38°

43 °

Islip Terrace, Saturday, 14 November

Overcast. High 43°, low 38°.

Pressure30.00 inHg

Wind10.5 mph N

Humidity40%

Visibility—

Dew point17°

Sun, 1549° / 37°

49 °

Islip Terrace, Sunday, 15 November

Clear. High 49°, low 37°.

Pressure30.12 inHg

Wind10.7 mph N

Humidity41%

Visibility—

Dew point19°

Mon, 1659° / 45°

59 °

Islip Terrace, Monday, 16 November

Mostly clear. High 59°, low 45°.

Pressure30.12 inHg

Wind13.2 mph W

Humidity56%

Visibility—

Dew point34°

Tue, 1760° / 50°

60 °

Islip Terrace, Tuesday, 17 November

Overcast. High 60°, low 50°.

Pressure30.24 inHg

Wind8.5 mph W

Humidity53%

Visibility—

Dew point38°

Wed, 1862° / 52°

62 °

Islip Terrace, Wednesday, 18 November

Clear. High 62°, low 52°.

Pressure30.33 inHg

Wind9.6 mph N

Humidity51%

Visibility—

Dew point40°

Thu, 1954° / 47°

54 °

Islip Terrace, Thursday, 19 November

Partly cloudy. High 54°, low 47°.

Pressure30.68 inHg

Wind10.7 mph NE

Humidity60%

Visibility—

Dew point39°

Fri, 2059° / 51°

59 °

Islip Terrace, Friday, 20 November

Overcast. High 59°, low 51°.

Pressure30.47 inHg

Wind10.5 mph SW

Humidity73%

Visibility—

Dew point47°

Sat, 2165° / 55°

65 °

Islip Terrace, Saturday, 21 November

Overcast. High 65°, low 55°.

Pressure30.30 inHg

Wind12.6 mph E

Humidity53%

Visibility—

Dew point43°

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

Sun, 2249° / 40°

0.16

49 °

Islip Terrace, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high49°

Average low40°

Average precipitation0.16 in

Chance of precipitation37%

Record high61° (2007)

Record low21° (2018)

Mon, 2348° / 39°

0.13

48 °

Islip Terrace, Monday, 23 November

Climate normal for this date — 60-year average.

Average high48°

Average low39°

Average precipitation0.13 in

Chance of precipitation23%

Record high64° (1992)

Record low20° (2018)

Tue, 2449° / 40°

0.09

49 °

Islip Terrace, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high49°

Average low40°

Average precipitation0.09 in

Chance of precipitation28%

Record high62° (1979)

Record low26° (2013)

Wed, 2549° / 40°

0.14

49 °

Islip Terrace, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high49°

Average low40°

Average precipitation0.14 in

Chance of precipitation33%

Record high63° (1979)

Record low25° (2005)

Thu, 2651° / 41°

0.21

51 °

Islip Terrace, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high51°

Average low41°

Average precipitation0.21 in

Chance of precipitation43%

Record high63° (1979)

Record low29° (1978)

Fri, 2750° / 41°

0.13

50 °

Islip Terrace, Friday, 27 November

Climate normal for this date — 60-year average.

Average high50°

Average low41°

Average precipitation0.13 in

Chance of precipitation35%

Record high61° (1986)

Record low29° (1978)

Sat, 2851° / 41°

0.16

51 °

Islip Terrace, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high51°

Average low41°

Average precipitation0.16 in

Chance of precipitation40%

Record high62° (1990)

Record low26° (2002)

Sun, 2949° / 40°

0.1

49 °

Islip Terrace, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high49°

Average low40°

Average precipitation0.1 in

Chance of precipitation30%

Record high62° (2011)

Record low26° (2023)

Mon, 3047° / 38°

0.14

47 °

Islip Terrace, Monday, 30 November

Climate normal for this date — 60-year average.

Average high47°

Average low38°

Average precipitation0.14 in

Chance of precipitation35%

Record high63° (2020)

Record low26° (1976)

Tue, 0148° / 38°

0.14

48 °

Islip Terrace, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high48°

Average low38°

Average precipitation0.14 in

Chance of precipitation37%

Record high64° (2001)

Record low24° (1964)

Wed, 0247° / 38°

0.14

47 °

Islip Terrace, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high47°

Average low38°

Average precipitation0.14 in

Chance of precipitation33%

Record high58° (1982)

Record low22° (1971)

Thu, 0347° / 37°

0.15

47 °

Islip Terrace, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high47°

Average low37°

Average precipitation0.15 in

Chance of precipitation30%

Record high61° (2009)

Record low17° (1976)

Fri, 0446° / 36°

0.11

46 °

Islip Terrace, Friday, 4 December

Climate normal for this date — 60-year average.

Average high46°

Average low36°

Average precipitation0.11 in

Chance of precipitation23%

Record high65° (1998)

Record low18° (1989)

Sat, 0545° / 36°

0.18

45 °

Islip Terrace, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high45°

Average low36°

Average precipitation0.18 in

Chance of precipitation30%

Record high62° (2001)

Record low20° (2025)

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 Islip Terrace, 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 Islip Terrace, 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.