Monthly outlook for Islip Terrace, NY: average high 59.6°, average low 50.7°. That is 2.8° above the climate normal for November. Precipitation is expected on 8 days (about 4.1 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 5 November (70.9°), the coolest 1 November (41.1°).
59.6°/50.7°
Average high / low
+2.8°
Above normal
8 / 5
Wet days / normal
4.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
1 November – 10 November
63°
56.1°
+3.8°
11 November – 20 November
54°
51.7°
+1.3°
21 November – 30 November
at normal
49.3°
—
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).
Mon, 0268° / 43°0
68 °
Islip Terrace, Monday, 2 November
Overcast. High 68°, low 43°.
Pressure30.39 inHg
Wind6.4 mph SW
Humidity36%
Visibility6.2 mi
Dew point37°
Tue, 0366° / 48°0
66 °
Islip Terrace, Tuesday, 3 November
Overcast. High 66°, low 48°.
Pressure30.30 inHg
Wind7.2 mph SW
Humidity57%
Visibility6.2 mi
Dew point50°
Wed, 0469° / 54°0
69 °
Islip Terrace, Wednesday, 4 November
Clear. High 69°, low 54°.
Pressure30.15 inHg
Wind7 mph SW
Humidity62%
Visibility6.2 mi
Dew point55°
Thu, 0571° / 59°0.13
71 °
Islip Terrace, Thursday, 5 November
Light rain. High 71°, low 59°.
Pressure29.97 inHg
Wind9.2 mph S
Humidity85%
Visibility—
Dew point63°
Fri, 0667° / 62°0.29
67 °
Islip Terrace, Friday, 6 November
Light rain. High 67°, low 62°.
Pressure29.85 inHg
Wind13.7 mph S
Humidity91%
Visibility—
Dew point64°
Sat, 0763° / 59°0.46
63 °
Islip Terrace, Saturday, 7 November
Rain. High 63°, low 59°.
Pressure29.68 inHg
Wind10.4 mph SE
Humidity96%
Visibility—
Dew point60°
Sun, 0860° / 54°0.4
60 °
Islip Terrace, Sunday, 8 November
Rain. High 60°, low 54°.
Pressure29.35 inHg
Wind16 mph SW
Humidity74%
Visibility—
Dew point49°
Mon, 0952° / 49°0.22
52 °
Islip Terrace, Monday, 9 November
Rain. High 52°, low 49°.
Pressure29.35 inHg
Wind20.2 mph SW
Humidity67%
Visibility—
Dew point41°
Tue, 1051° / 49°0.06
51 °
Islip Terrace, Tuesday, 10 November
Light rain. High 51°, low 49°.
Pressure29.47 inHg
Wind19 mph W
Humidity73%
Visibility—
Dew point41°
Wed, 1151° / 48°0.02
51 °
Islip Terrace, Wednesday, 11 November
Light rain. High 51°, low 48°.
Pressure29.68 inHg
Wind15.9 mph W
Humidity51%
Visibility—
Dew point32°
Thu, 1252° / 45°0
52 °
Islip Terrace, Thursday, 12 November
Mostly clear. High 52°, low 45°.
Pressure30.00 inHg
Wind10 mph NW
Humidity58%
Visibility—
Dew point35°
Fri, 1353° / 47°0
53 °
Islip Terrace, Friday, 13 November
Light rain. High 53°, low 47°.
Pressure30.12 inHg
Wind8.4 mph SE
Humidity55%
Visibility—
Dew point35°
Sat, 1457° / 52°2.47
57 °
Islip Terrace, Saturday, 14 November
Heavy rain. High 57°, low 52°.
Pressure29.29 inHg
Wind26.6 mph E
Humidity94%
Visibility—
Dew point55°
Sun, 1554° / 51°0.09
54 °
Islip Terrace, Sunday, 15 November
Light rain. High 54°, low 51°.
Pressure29.21 inHg
Wind18.6 mph N
Humidity86%
Visibility—
Dew point49°
Mon, 1657° / 49°0
57 °
Islip Terrace, Monday, 16 November
Clear. High 57°, low 49°.
Pressure30.00 inHg
Wind15.7 mph N
Humidity63%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1751° / 42°0.14
51 °
Islip Terrace, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.14 in
Chance of precipitation37%
Record high65° (2006)
Record low31° (1967)
Wed, 1851° / 42°0.08
51 °
Islip Terrace, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.08 in
Chance of precipitation23%
Record high64° (2024)
Record low30° (2014)
Thu, 1951° / 42°0.07
51 °
Islip Terrace, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.07 in
Chance of precipitation28%
Record high62° (2021)
Record low26° (2014)
Fri, 2051° / 41°0.12
51 °
Islip Terrace, Friday, 20 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.12 in
Chance of precipitation32%
Record high66° (1985)
Record low29° (1984)
Sat, 2150° / 40°0.1
50 °
Islip Terrace, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.1 in
Chance of precipitation30%
Record high62° (2020)
Record low22° (1987)
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)
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.