Monthly outlook for Old Mastic, NY: average high 57.4°, average low 46.1°. That is 0.2° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 30 October (65.4°), the coolest 24 October (35°).
57.4°/46.1°
Average high / low
+0.2°
Above normal
0 / 5
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
59.2°
58°
+0.7°
3 November – 12 November
54.3°
54.9°
-0.3°
13 November – 22 November
at normal
50.6°
—
October records over 66 years
83.8°2 October 2019All-time high
33.8°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Brookhaven (8 mi).
Sun, 2564° / 39°0
64 °
Old Mastic, Sunday, 25 October
Clear. High 64°, low 39°.
Pressure30.56 inHg
Wind2.8 mph N
Humidity41%
Visibility6.2 mi
Dew point37°
Mon, 2664° / 45°0
64 °
Old Mastic, Monday, 26 October
Clear. High 64°, low 45°.
Pressure30.24 inHg
Wind4 mph W
Humidity51%
Visibility6.2 mi
Dew point43°
Tue, 2757° / 44°0
57 °
Old Mastic, Tuesday, 27 October
Clear. High 57°, low 44°.
Pressure30.36 inHg
Wind8.5 mph N
Humidity47%
Visibility6.2 mi
Dew point33°
Wed, 2855° / 42°0
55 °
Old Mastic, Wednesday, 28 October
Clear. High 55°, low 42°.
Pressure30.50 inHg
Wind2.7 mph E
Humidity56%
Visibility6.2 mi
Dew point37°
Thu, 2962° / 46°0
62 °
Old Mastic, Thursday, 29 October
Partly cloudy. High 62°, low 46°.
Pressure30.36 inHg
Wind10.4 mph SW
Humidity63%
Visibility—
Dew point46°
Fri, 3065° / 55°0
65 °
Old Mastic, Friday, 30 October
Clear. High 65°, low 55°.
Pressure30.09 inHg
Wind14.3 mph N
Humidity66%
Visibility—
Dew point49°
Sat, 3158° / 48°0.01
58 °
Old Mastic, Saturday, 31 October
Light rain. High 58°, low 48°.
Pressure30.39 inHg
Wind20.4 mph NE
Humidity62%
Visibility—
Dew point40°
Sun, 0154° / 48°0
54 °
Old Mastic, Sunday, 1 November
Overcast. High 54°, low 48°.
Pressure30.50 inHg
Wind16.5 mph E
Humidity68%
Visibility—
Dew point40°
Mon, 0255° / 50°0.01
55 °
Old Mastic, Monday, 2 November
Light rain. High 55°, low 50°.
Pressure30.21 inHg
Wind16.2 mph NE
Humidity73%
Visibility—
Dew point44°
Tue, 0357° / 51°0.01
57 °
Old Mastic, Tuesday, 3 November
Light rain. High 57°, low 51°.
Pressure29.80 inHg
Wind13.8 mph NW
Humidity75%
Visibility—
Dew point46°
Wed, 0452° / 47°0
52 °
Old Mastic, Wednesday, 4 November
Light rain. High 52°, low 47°.
Pressure29.88 inHg
Wind14.1 mph NW
Humidity50%
Visibility—
Dew point31°
Thu, 0549° / 42°0
49 °
Old Mastic, Thursday, 5 November
Clear. High 49°, low 42°.
Pressure30.33 inHg
Wind13.9 mph NW
Humidity51%
Visibility—
Dew point28°
Fri, 0652° / 43°0
52 °
Old Mastic, Friday, 6 November
Overcast. High 52°, low 43°.
Pressure30.53 inHg
Wind12 mph SW
Humidity50%
Visibility—
Dew point28°
Sat, 0757° / 50°0
57 °
Old Mastic, Saturday, 7 November
Mostly clear. High 57°, low 50°.
Pressure30.33 inHg
Wind15.9 mph SW
Humidity58%
Visibility—
Dew point39°
Sun, 0859° / 54°0.01
59 °
Old Mastic, Sunday, 8 November
Light rain. High 59°, low 54°.
Pressure30.06 inHg
Wind16.3 mph S
Humidity65%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0954° / 45°0.11
54 °
Old Mastic, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.11 in
Chance of precipitation23%
Record high68° (2020)
Record low29° (2019)
Tue, 1055° / 45°0.17
55 °
Old Mastic, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.17 in
Chance of precipitation42%
Record high65° (1999)
Record low28° (2017)
Wed, 1154° / 45°0.15
54 °
Old Mastic, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.15 in
Chance of precipitation37%
Record high68° (2024)
Record low26° (2017)
Thu, 1252° / 44°0.16
52 °
Old Mastic, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low44°
Average precipitation0.16 in
Chance of precipitation38%
Record high70° (2022)
Record low30° (2019)
Fri, 1351° / 42°0.23
51 °
Old Mastic, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.23 in
Chance of precipitation40%
Record high65° (1964)
Record low24° (2019)
Sat, 1451° / 42°0.11
51 °
Old Mastic, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.11 in
Chance of precipitation22%
Record high63° (1989)
Record low27° (2019)
Sun, 1552° / 42°0.12
52 °
Old Mastic, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.12 in
Chance of precipitation42%
Record high69° (1993)
Record low26° (1967)
Mon, 1651° / 42°0.15
51 °
Old Mastic, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.15 in
Chance of precipitation38%
Record high65° (2006)
Record low25° (1967)
Tue, 1751° / 42°0.15
51 °
Old Mastic, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.15 in
Chance of precipitation33%
Record high65° (2006)
Record low31° (2019)
Wed, 1851° / 42°0.07
51 °
Old Mastic, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.07 in
Chance of precipitation25%
Record high63° (2024)
Record low30° (2014)
Thu, 1951° / 42°0.07
51 °
Old Mastic, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.07 in
Chance of precipitation25%
Record high62° (2021)
Record low26° (2014)
Fri, 2050° / 41°0.13
50 °
Old Mastic, Friday, 20 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.13 in
Chance of precipitation28%
Record high65° (1985)
Record low29° (1984)
Sat, 2150° / 40°0.11
50 °
Old Mastic, 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 °
Old Mastic, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.16 in
Chance of precipitation40%
Record high60° (1991)
Record low20° (2018)
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 Old Mastic, 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 Old Mastic, 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.