Monthly outlook for Islip Terrace, NY: average high 59.5°, average low 48.1°. That is 2.2° above the climate normal for October. Precipitation is expected on 5 days (about 2.7 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 30 October (70.8°), the coolest 31 October (40.7°).
59.5°/48.1°
Average high / low
+2.2°
Above normal
5 / 5
Wet days / normal
2.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
62.2°
56.8°
+3°
8 November – 17 November
55.1°
52.8°
+1.2°
18 November – 27 November
at normal
49.9°
—
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).
Fri, 3071° / 47°0
71 °
Islip Terrace, Friday, 30 October
Clear. High 71°, low 47°.
Pressure30.03 inHg
Wind10.3 mph NW
Humidity55%
Visibility6.2 mi
Dew point52°
Sat, 3154° / 41°0
54 °
Islip Terrace, Saturday, 31 October
Clear. High 54°, low 41°.
Pressure30.42 inHg
Wind7.6 mph N
Humidity48%
Visibility6.2 mi
Dew point32°
Sun, 0158° / 42°0
58 °
Islip Terrace, Sunday, 1 November
Overcast. High 58°, low 42°.
Pressure30.50 inHg
Wind3.2 mph NW
Humidity47%
Visibility6.2 mi
Dew point34°
Mon, 0264° / 44°0
64 °
Islip Terrace, Monday, 2 November
Overcast. High 64°, low 44°.
Pressure30.36 inHg
Wind5 mph SW
Humidity52%
Visibility6.2 mi
Dew point43°
Tue, 0370° / 50°0
70 °
Islip Terrace, Tuesday, 3 November
Overcast. High 70°, low 50°.
Pressure30.30 inHg
Wind5.2 mph SW
Humidity58%
Visibility—
Dew point46°
Wed, 0458° / 52°0
58 °
Islip Terrace, Wednesday, 4 November
Overcast. High 58°, low 52°.
Pressure30.30 inHg
Wind10.9 mph E
Humidity84%
Visibility—
Dew point51°
Thu, 0563° / 58°0.05
63 °
Islip Terrace, Thursday, 5 November
Light rain. High 63°, low 58°.
Pressure30.00 inHg
Wind16 mph SE
Humidity89%
Visibility—
Dew point57°
Fri, 0664° / 48°0.63
64 °
Islip Terrace, Friday, 6 November
Rain. High 64°, low 48°.
Pressure29.53 inHg
Wind21.5 mph SW
Humidity91%
Visibility—
Dew point60°
Sat, 0752° / 44°0
52 °
Islip Terrace, Saturday, 7 November
Clear. High 52°, low 44°.
Pressure30.24 inHg
Wind13.4 mph N
Humidity33%
Visibility—
Dew point19°
Sun, 0857° / 47°0
57 °
Islip Terrace, Sunday, 8 November
Mostly clear. High 57°, low 47°.
Pressure30.33 inHg
Wind6.5 mph SW
Humidity37%
Visibility—
Dew point26°
Mon, 0958° / 51°0
58 °
Islip Terrace, Monday, 9 November
Overcast. High 58°, low 51°.
Pressure30.24 inHg
Wind9.2 mph SE
Humidity52%
Visibility—
Dew point38°
Tue, 1058° / 54°1.33
58 °
Islip Terrace, Tuesday, 10 November
Rain. High 58°, low 54°.
Pressure30.00 inHg
Wind19.8 mph NE
Humidity91%
Visibility—
Dew point54°
Wed, 1153° / 50°0.57
53 °
Islip Terrace, Wednesday, 11 November
Rain. High 53°, low 50°.
Pressure30.00 inHg
Wind19.5 mph NE
Humidity89%
Visibility—
Dew point49°
Thu, 1255° / 49°0
55 °
Islip Terrace, Thursday, 12 November
Overcast. High 55°, low 49°.
Pressure30.12 inHg
Wind9.1 mph E
Humidity64%
Visibility—
Dew point40°
Fri, 1351° / 50°0.16
51 °
Islip Terrace, Friday, 13 November
Light rain. High 51°, low 50°.
Pressure30.06 inHg
Wind10.6 mph E
Humidity81%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.