Monthly outlook for Mastic Beach, NY: average high 61.1°, average low 52°. That is 0.3° above the climate normal for October. Precipitation is expected on 5 days (about 3.7 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 14 October (78.4°), the coolest 18 October (39.9°).
61.1°/52°
Average high / low
+0.3°
Above normal
5 / 5
Wet days / normal
3.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
64.2°
61.4°
+1.5°
22 October – 31 October
55.9°
58.3°
-1.4°
1 November – 10 November
at normal
55.9°
—
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 (7 mi).
Tue, 1368° / 53°0.01
68 °
Mastic Beach, Tuesday, 13 October
Light rain. High 68°, low 53°.
Pressure29.97 inHg
Wind8.3 mph SE
Humidity79%
Visibility6.2 mi
Dew point60°
Wed, 1478° / 64°0.01
78 °
Mastic Beach, Wednesday, 14 October
Light rain. High 78°, low 64°.
Pressure29.83 inHg
Wind7.2 mph W
Humidity69%
Visibility6.2 mi
Dew point67°
Thu, 1563° / 55°0
63 °
Mastic Beach, Thursday, 15 October
Partly cloudy. High 63°, low 55°.
Pressure30.18 inHg
Wind6.3 mph N
Humidity60%
Visibility6.2 mi
Dew point47°
Fri, 1671° / 54°0.6
71 °
Mastic Beach, Friday, 16 October
Rain. High 71°, low 54°.
Pressure29.62 inHg
Wind17.1 mph NW
Humidity96%
Visibility—
Dew point63°
Sat, 1750° / 41°0
50 °
Mastic Beach, Saturday, 17 October
Light rain. High 50°, low 41°.
Pressure30.12 inHg
Wind22.4 mph NW
Humidity52%
Visibility—
Dew point30°
Sun, 1853° / 40°0
53 °
Mastic Beach, Sunday, 18 October
Clear. High 53°, low 40°.
Pressure30.68 inHg
Wind17.1 mph SW
Humidity34%
Visibility—
Dew point18°
Mon, 1961° / 52°0
61 °
Mastic Beach, Monday, 19 October
Clear. High 61°, low 52°.
Pressure30.50 inHg
Wind19.5 mph SW
Humidity52%
Visibility—
Dew point38°
Tue, 2066° / 55°0
66 °
Mastic Beach, Tuesday, 20 October
Partly cloudy. High 66°, low 55°.
Pressure30.33 inHg
Wind10.6 mph W
Humidity51%
Visibility—
Dew point43°
Wed, 2162° / 58°0
62 °
Mastic Beach, Wednesday, 21 October
Overcast. High 62°, low 58°.
Pressure30.42 inHg
Wind13.1 mph E
Humidity68%
Visibility—
Dew point51°
Thu, 2261° / 59°0
61 °
Mastic Beach, Thursday, 22 October
Overcast. High 61°, low 59°.
Pressure30.39 inHg
Wind19.5 mph SE
Humidity76%
Visibility—
Dew point52°
Fri, 2364° / 57°2.58
64 °
Mastic Beach, Friday, 23 October
Heavy rain. High 64°, low 57°.
Pressure29.85 inHg
Wind30.6 mph SE
Humidity94%
Visibility—
Dew point61°
Sat, 2455° / 49°0.21
55 °
Mastic Beach, Saturday, 24 October
Rain. High 55°, low 49°.
Pressure29.35 inHg
Wind19.9 mph NW
Humidity69%
Visibility—
Dew point45°
Sun, 2551° / 45°0.16
51 °
Mastic Beach, Sunday, 25 October
Light rain. High 51°, low 45°.
Pressure29.35 inHg
Wind19.9 mph NW
Humidity81%
Visibility—
Dew point42°
Mon, 2654° / 49°0
54 °
Mastic Beach, Monday, 26 October
Light rain. High 54°, low 49°.
Pressure29.68 inHg
Wind16.1 mph NW
Humidity67%
Visibility—
Dew point41°
Tue, 2751° / 48°0
51 °
Mastic Beach, Tuesday, 27 October
Overcast. High 51°, low 48°.
Pressure29.77 inHg
Wind13.4 mph NW
Humidity60%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2858° / 49°0.17
58 °
Mastic Beach, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low49°
Average precipitation0.17 in
Chance of precipitation32%
Record high77° (2023)
Record low35° (1976)
Thu, 2957° / 48°0.19
57 °
Mastic Beach, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low48°
Average precipitation0.19 in
Chance of precipitation25%
Record high71° (1984)
Record low35° (1965)
Fri, 3056° / 47°0.11
56 °
Mastic Beach, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low47°
Average precipitation0.11 in
Chance of precipitation27%
Record high69° (2023)
Record low37° (1966)
Sat, 3157° / 48°0.06
57 °
Mastic Beach, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low48°
Average precipitation0.06 in
Chance of precipitation23%
Record high72° (2024)
Record low35° (2020)
Sun, 0158° / 49°0.14
58 °
Mastic Beach, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low49°
Average precipitation0.14 in
Chance of precipitation30%
Record high75° (2024)
Record low38° (1976)
Mon, 0258° / 49°0.08
58 °
Mastic Beach, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low49°
Average precipitation0.08 in
Chance of precipitation32%
Record high69° (1971)
Record low33° (1965)
Tue, 0357° / 48°0.12
57 °
Mastic Beach, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high57°
Average low48°
Average precipitation0.12 in
Chance of precipitation30%
Record high69° (2017)
Record low37° (1996)
Wed, 0456° / 47°0.05
56 °
Mastic Beach, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low47°
Average precipitation0.05 in
Chance of precipitation27%
Record high68° (1975)
Record low37° (2013)
Thu, 0556° / 48°0.15
56 °
Mastic Beach, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low48°
Average precipitation0.15 in
Chance of precipitation30%
Record high69° (2022)
Record low38° (1965)
Fri, 0655° / 47°0.11
55 °
Mastic Beach, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low47°
Average precipitation0.11 in
Chance of precipitation32%
Record high70° (2024)
Record low36° (1962)
Sat, 0755° / 46°0.1
55 °
Mastic Beach, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.1 in
Chance of precipitation25%
Record high75° (2022)
Record low35° (1962)
Sun, 0854° / 45°0.17
54 °
Mastic Beach, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.17 in
Chance of precipitation30%
Record high72° (2020)
Record low32° (2019)
Mon, 0954° / 45°0.11
54 °
Mastic Beach, 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 °
Mastic Beach, 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)
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 Mastic Beach, 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 Mastic Beach, 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.