Monthly outlook for Islip Terrace, NY: average high 58.9°, average low 47°. That is 1.3° above the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 30 October (69.9°), the coolest 28 October (38°).
58.9°/47°
Average high / low
+1.3°
Above normal
4 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
27 October – 5 November
60.5°
57.5°
+1.7°
6 November – 15 November
56.2°
53.6°
+1.4°
16 November – 25 November
at normal
50.1°
—
October records over 66 years
82.9°8 October 2007All-time high
33.6°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Islip (1 mi).
Wed, 2861° / 38°0
61 °
Islip Terrace, Wednesday, 28 October
Overcast. High 61°, low 38°.
Pressure30.45 inHg
Wind0.7 mph E
Humidity57%
Visibility6.2 mi
Dew point42°
Thu, 2964° / 47°0
64 °
Islip Terrace, Thursday, 29 October
Clear. High 64°, low 47°.
Pressure30.24 inHg
Wind5.7 mph SW
Humidity57%
Visibility6.2 mi
Dew point48°
Fri, 3070° / 53°0
70 °
Islip Terrace, Friday, 30 October
Clear. High 70°, low 53°.
Pressure30.06 inHg
Wind8.6 mph NW
Humidity56%
Visibility6.2 mi
Dew point52°
Sat, 3158° / 47°0
58 °
Islip Terrace, Saturday, 31 October
Clear. High 58°, low 47°.
Pressure30.39 inHg
Wind7.4 mph N
Humidity53%
Visibility—
Dew point36°
Sun, 0161° / 44°0
61 °
Islip Terrace, Sunday, 1 November
Clear. High 61°, low 44°.
Pressure30.45 inHg
Wind7.8 mph S
Humidity54%
Visibility—
Dew point39°
Mon, 0261° / 58°0.15
61 °
Islip Terrace, Monday, 2 November
Rain. High 61°, low 58°.
Pressure30.06 inHg
Wind10.1 mph SE
Humidity79%
Visibility—
Dew point53°
Tue, 0359° / 47°0.07
59 °
Islip Terrace, Tuesday, 3 November
Light rain. High 59°, low 47°.
Pressure30.03 inHg
Wind16.5 mph NE
Humidity82%
Visibility—
Dew point49°
Wed, 0454° / 44°0
54 °
Islip Terrace, Wednesday, 4 November
Partly cloudy. High 54°, low 44°.
Pressure30.30 inHg
Wind10.4 mph NE
Humidity59%
Visibility—
Dew point35°
Thu, 0559° / 49°0.08
59 °
Islip Terrace, Thursday, 5 November
Light rain. High 59°, low 49°.
Pressure30.12 inHg
Wind12.1 mph SE
Humidity76%
Visibility—
Dew point45°
Fri, 0663° / 52°0.19
63 °
Islip Terrace, Friday, 6 November
Light rain. High 63°, low 52°.
Pressure29.59 inHg
Wind12.8 mph S
Humidity71%
Visibility—
Dew point52°
Sat, 0750° / 44°0
50 °
Islip Terrace, Saturday, 7 November
Clear. High 50°, low 44°.
Pressure30.00 inHg
Wind15.2 mph N
Humidity46%
Visibility—
Dew point26°
Sun, 0851° / 41°0
51 °
Islip Terrace, Sunday, 8 November
Overcast. High 51°, low 41°.
Pressure30.33 inHg
Wind9.3 mph SW
Humidity37%
Visibility—
Dew point20°
Mon, 0957° / 46°0
57 °
Islip Terrace, Monday, 9 November
Clear. High 57°, low 46°.
Pressure30.33 inHg
Wind8.3 mph W
Humidity49%
Visibility—
Dew point33°
Tue, 1057° / 50°0
57 °
Islip Terrace, Tuesday, 10 November
Overcast. High 57°, low 50°.
Pressure30.27 inHg
Wind9.5 mph SW
Humidity51%
Visibility—
Dew point37°
Wed, 1159° / 53°0
59 °
Islip Terrace, Wednesday, 11 November
Overcast. High 59°, low 53°.
Pressure30.06 inHg
Wind10.2 mph SW
Humidity82%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1253° / 44°0.17
53 °
Islip Terrace, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.17 in
Chance of precipitation43%
Record high69° (2022)
Record low31° (2019)
Fri, 1351° / 42°0.23
51 °
Islip Terrace, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.23 in
Chance of precipitation40%
Record high66° (1964)
Record low26° (2019)
Sat, 1451° / 42°0.11
51 °
Islip Terrace, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.11 in
Chance of precipitation23%
Record high64° (1989)
Record low28° (1986)
Sun, 1552° / 43°0.12
52 °
Islip Terrace, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.12 in
Chance of precipitation43%
Record high70° (1993)
Record low26° (1967)
Mon, 1652° / 42°0.15
52 °
Islip Terrace, Monday, 16 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.15 in
Chance of precipitation37%
Record high65° (2006)
Record low25° (1967)
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)
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.