Monthly outlook for West Islip, NY: average high 59.7°, average low 49.4°. That is 2.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 4 November (68.4°), the coolest 1 November (38.3°).
59.7°/49.4°
Average high / low
+2.6°
Above normal
4 / 5
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
31 October – 9 November
62.6°
56.3°
+3.5°
10 November – 19 November
54.8°
52.1°
+1.5°
20 November – 29 November
at normal
49.6°
—
October records over 66 years
84.9°2 October 2019All-time high
33.6°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Bay Shore (3 mi).
Sun, 0162° / 38°0
62 °
West Islip, Sunday, 1 November
Overcast. High 62°, low 38°.
Pressure30.53 inHg
Wind2.6 mph NW
Humidity44%
Visibility6.2 mi
Dew point33°
Mon, 0264° / 46°0
64 °
West Islip, Monday, 2 November
Overcast. High 64°, low 46°.
Pressure30.39 inHg
Wind5.4 mph SW
Humidity34%
Visibility6.2 mi
Dew point36°
Tue, 0367° / 47°0
67 °
West Islip, Tuesday, 3 November
Overcast. High 67°, low 47°.
Pressure30.36 inHg
Wind2.9 mph S
Humidity45%
Visibility6.2 mi
Dew point44°
Wed, 0468° / 50°0
68 °
West Islip, Wednesday, 4 November
Clear. High 68°, low 50°.
Pressure30.27 inHg
Wind6.4 mph S
Humidity66%
Visibility—
Dew point51°
Thu, 0566° / 55°0.38
66 °
West Islip, Thursday, 5 November
Rain. High 66°, low 55°.
Pressure30.06 inHg
Wind7.3 mph S
Humidity70%
Visibility—
Dew point55°
Fri, 0663° / 58°0.01
63 °
West Islip, Friday, 6 November
Light rain. High 63°, low 58°.
Pressure30.09 inHg
Wind10.8 mph NE
Humidity86%
Visibility—
Dew point57°
Sat, 0758° / 55°0
58 °
West Islip, Saturday, 7 November
Overcast. High 58°, low 55°.
Pressure30.12 inHg
Wind9.5 mph NE
Humidity68%
Visibility—
Dew point46°
Sun, 0860° / 53°0
60 °
West Islip, Sunday, 8 November
Overcast. High 60°, low 53°.
Pressure30.06 inHg
Wind5 mph S
Humidity61%
Visibility—
Dew point45°
Mon, 0960° / 56°0.08
60 °
West Islip, Monday, 9 November
Light rain. High 60°, low 56°.
Pressure30.09 inHg
Wind10.5 mph S
Humidity84%
Visibility—
Dew point51°
Tue, 1061° / 58°0.33
61 °
West Islip, Tuesday, 10 November
Rain. High 61°, low 58°.
Pressure29.94 inHg
Wind11.8 mph S
Humidity89%
Visibility—
Dew point57°
Wed, 1161° / 52°0.48
61 °
West Islip, Wednesday, 11 November
Rain. High 61°, low 52°.
Pressure29.35 inHg
Wind20.5 mph NW
Humidity70%
Visibility—
Dew point48°
Thu, 1254° / 48°0
54 °
West Islip, Thursday, 12 November
Mostly clear. High 54°, low 48°.
Pressure29.71 inHg
Wind19.6 mph W
Humidity40%
Visibility—
Dew point28°
Fri, 1351° / 44°0
51 °
West Islip, Friday, 13 November
Clear. High 51°, low 44°.
Pressure29.94 inHg
Wind17.6 mph NW
Humidity47%
Visibility—
Dew point27°
Sat, 1451° / 44°0.03
51 °
West Islip, Saturday, 14 November
Light rain. High 51°, low 44°.
Pressure30.03 inHg
Wind10.2 mph NW
Humidity44%
Visibility—
Dew point27°
Sun, 1551° / 42°0.01
51 °
West Islip, Sunday, 15 November
Light rain. High 51°, low 42°.
Pressure30.03 inHg
Wind13.9 mph N
Humidity39%
Visibility—
Dew point21°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 1652° / 42°0.14
52 °
West Islip, Monday, 16 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.14 in
Chance of precipitation37%
Record high65° (2006)
Record low25° (1967)
Tue, 1751° / 42°0.14
51 °
West Islip, 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° (2019)
Wed, 1851° / 42°0.08
51 °
West Islip, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.08 in
Chance of precipitation25%
Record high64° (2024)
Record low30° (2014)
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)
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.