Monthly outlook for West Islip, NY: average high 59.3°, average low 48.9°. That is 3.1° above the climate normal for November. Precipitation is expected on 3 days (about 3.4 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 4 November (73.1°), the coolest 15 November (42.3°).
59.3°/48.9°
Average high / low
+3.1°
Above normal
3 / 5
Wet days / normal
3.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
3 November – 12 November
63.1°
55.2°
+4.4°
13 November – 22 November
52.9°
50.8°
+1.2°
23 November – 2 December
at normal
48.9°
—
November records over 66 years
76.8°1 November 2024All-time high
18.1°23 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Bay Shore (3 mi).
Wed, 0473° / 48°0
73 °
West Islip, Wednesday, 4 November
Clear. High 73°, low 48°.
Pressure30.15 inHg
Wind7 mph SW
Humidity59%
Visibility6.2 mi
Dew point54°
Thu, 0570° / 60°0.13
70 °
West Islip, Thursday, 5 November
Rain. High 70°, low 60°.
Pressure29.94 inHg
Wind8.9 mph S
Humidity72%
Visibility6.2 mi
Dew point61°
Fri, 0664° / 62°1.97
64 °
West Islip, Friday, 6 November
Heavy rain. High 64°, low 62°.
Pressure29.91 inHg
Wind4 mph S
Humidity97%
Visibility2.3 mi
Dew point64°
Sat, 0768° / 54°1.24
68 °
West Islip, Saturday, 7 November
Heavy rain. High 68°, low 54°.
Pressure29.77 inHg
Wind9.7 mph W
Humidity86%
Visibility—
Dew point58°
Sun, 0860° / 47°0
60 °
West Islip, Sunday, 8 November
Clear. High 60°, low 47°.
Pressure29.88 inHg
Wind8 mph W
Humidity68%
Visibility—
Dew point44°
Mon, 0955° / 48°0
55 °
West Islip, Monday, 9 November
Overcast. High 55°, low 48°.
Pressure29.77 inHg
Wind13.8 mph NW
Humidity45%
Visibility—
Dew point32°
Tue, 1056° / 45°0
56 °
West Islip, Tuesday, 10 November
Clear. High 56°, low 45°.
Pressure30.03 inHg
Wind12.4 mph NW
Humidity51%
Visibility—
Dew point32°
Wed, 1161° / 50°0
61 °
West Islip, Wednesday, 11 November
Overcast. High 61°, low 50°.
Pressure29.91 inHg
Wind12.8 mph W
Humidity60%
Visibility—
Dew point41°
Thu, 1256° / 48°0
56 °
West Islip, Thursday, 12 November
Mostly clear. High 56°, low 48°.
Pressure29.91 inHg
Wind11.5 mph NW
Humidity45%
Visibility—
Dew point30°
Fri, 1349° / 43°0
49 °
West Islip, Friday, 13 November
Overcast. High 49°, low 43°.
Pressure30.09 inHg
Wind9.2 mph NW
Humidity49%
Visibility—
Dew point27°
Sat, 1450° / 43°0.03
50 °
West Islip, Saturday, 14 November
Light rain. High 50°, low 43°.
Pressure30.12 inHg
Wind7.9 mph NW
Humidity52%
Visibility—
Dew point29°
Sun, 1552° / 42°0
52 °
West Islip, Sunday, 15 November
Clear. High 52°, low 42°.
Pressure30.09 inHg
Wind9.5 mph N
Humidity52%
Visibility—
Dew point30°
Mon, 1658° / 45°0
58 °
West Islip, Monday, 16 November
Partly cloudy. High 58°, low 45°.
Pressure30.00 inHg
Wind10.5 mph NW
Humidity49%
Visibility—
Dew point31°
Tue, 1754° / 47°0
54 °
West Islip, Tuesday, 17 November
Clear. High 54°, low 47°.
Pressure30.18 inHg
Wind11.8 mph N
Humidity58%
Visibility—
Dew point36°
Wed, 1855° / 49°0.01
55 °
West Islip, Wednesday, 18 November
Light rain. High 55°, low 49°.
Pressure30.33 inHg
Wind12.5 mph SE
Humidity70%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1951° / 42°0.08
51 °
West Islip, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.08 in
Chance of precipitation28%
Record high61° (2003)
Record low26° (2014)
Fri, 2051° / 41°0.12
51 °
West Islip, Friday, 20 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.12 in
Chance of precipitation30%
Record high66° (1985)
Record low29° (1984)
Sat, 2150° / 40°0.11
50 °
West Islip, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.11 in
Chance of precipitation32%
Record high62° (2020)
Record low22° (1987)
Sun, 2249° / 40°0.16
49 °
West Islip, 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 low20° (2018)
Mon, 2348° / 39°0.12
48 °
West Islip, Monday, 23 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.12 in
Chance of precipitation23%
Record high64° (1992)
Record low18° (2018)
Tue, 2449° / 40°0.09
49 °
West Islip, 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° / 39°0.14
49 °
West Islip, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.14 in
Chance of precipitation33%
Record high63° (1979)
Record low25° (2005)
Thu, 2651° / 40°0.21
51 °
West Islip, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.21 in
Chance of precipitation42%
Record high63° (1979)
Record low29° (2023)
Fri, 2750° / 40°0.13
50 °
West Islip, Friday, 27 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.13 in
Chance of precipitation35%
Record high61° (1986)
Record low29° (1978)
Sat, 2850° / 41°0.16
50 °
West Islip, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.16 in
Chance of precipitation42%
Record high62° (1990)
Record low26° (2002)
Sun, 2949° / 39°0.11
49 °
West Islip, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.11 in
Chance of precipitation30%
Record high62° (2011)
Record low25° (2023)
Mon, 3047° / 38°0.14
47 °
West Islip, Monday, 30 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.14 in
Chance of precipitation35%
Record high64° (2020)
Record low26° (1976)
Tue, 0148° / 38°0.14
48 °
West Islip, 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° / 37°0.14
47 °
West Islip, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.14 in
Chance of precipitation32%
Record high59° (2023)
Record low22° (1971)
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 West Islip, 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 West Islip, 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.