Monthly outlook for Mastic Beach, NY: average high 60.6°, average low 50°. That is 0.3° below the climate normal for October. Precipitation is expected on 4 days (about 1.9 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 14 October (78.2°), the coolest 20 October (42.8°).
60.6°/50°
Average high / low
−0.3°
Below normal
4 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
64.3°
62°
+1.3°
20 October – 29 October
54.4°
59.1°
-2.6°
30 October – 8 November
at normal
56.2°
—
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).
Sun, 1162° / 50°0.3
62 °
Mastic Beach, Sunday, 11 October
Rain. High 62°, low 50°.
Pressure30.30 inHg
Wind9.8 mph E
Humidity81%
Visibility3.8 mi
Dew point54°
Mon, 1268° / 51°0.85
68 °
Mastic Beach, Monday, 12 October
Heavy rain. High 68°, low 51°.
Pressure29.71 inHg
Wind10.4 mph N
Humidity92%
Visibility6.2 mi
Dew point58°
Tue, 1368° / 56°0
68 °
Mastic Beach, Tuesday, 13 October
Clear. High 68°, low 56°.
Pressure29.94 inHg
Wind7 mph S
Humidity78%
Visibility6.2 mi
Dew point60°
Wed, 1478° / 66°0
78 °
Mastic Beach, Wednesday, 14 October
Clear. High 78°, low 66°.
Pressure29.83 inHg
Wind7 mph NW
Humidity70%
Visibility6.2 mi
Dew point66°
Thu, 1563° / 51°0
63 °
Mastic Beach, Thursday, 15 October
Mostly clear. High 63°, low 51°.
Pressure30.15 inHg
Wind12.2 mph N
Humidity64%
Visibility—
Dew point50°
Fri, 1665° / 49°0.63
65 °
Mastic Beach, Friday, 16 October
Rain. High 65°, low 49°.
Pressure30.06 inHg
Wind16.8 mph SW
Humidity84%
Visibility—
Dew point50°
Sat, 1766° / 53°0.01
66 °
Mastic Beach, Saturday, 17 October
Light rain. High 66°, low 53°.
Pressure29.85 inHg
Wind14.8 mph SW
Humidity88%
Visibility—
Dew point62°
Sun, 1856° / 46°0.06
56 °
Mastic Beach, Sunday, 18 October
Light rain. High 56°, low 46°.
Pressure29.97 inHg
Wind16.7 mph NW
Humidity67%
Visibility—
Dew point43°
Mon, 1950° / 45°0
50 °
Mastic Beach, Monday, 19 October
Clear. High 50°, low 45°.
Pressure30.45 inHg
Wind16.4 mph N
Humidity56%
Visibility—
Dew point32°
Tue, 2050° / 43°0
50 °
Mastic Beach, Tuesday, 20 October
Clear. High 50°, low 43°.
Pressure30.56 inHg
Wind16.4 mph N
Humidity43%
Visibility—
Dew point24°
Wed, 2153° / 46°0
53 °
Mastic Beach, Wednesday, 21 October
Partly cloudy. High 53°, low 46°.
Pressure30.53 inHg
Wind5.5 mph E
Humidity46%
Visibility—
Dew point30°
Thu, 2255° / 49°0
55 °
Mastic Beach, Thursday, 22 October
Clear. High 55°, low 49°.
Pressure30.62 inHg
Wind9.2 mph NE
Humidity56%
Visibility—
Dew point37°
Fri, 2355° / 48°0
55 °
Mastic Beach, Friday, 23 October
Clear. High 55°, low 48°.
Pressure30.47 inHg
Wind10.6 mph NE
Humidity64%
Visibility—
Dew point40°
Sat, 2458° / 49°0
58 °
Mastic Beach, Saturday, 24 October
Overcast. High 58°, low 49°.
Pressure30.30 inHg
Wind11.4 mph NE
Humidity57%
Visibility—
Dew point38°
Sun, 2556° / 51°0
56 °
Mastic Beach, Sunday, 25 October
Overcast. High 56°, low 51°.
Pressure30.24 inHg
Wind15.3 mph E
Humidity69%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2658° / 50°0.16
58 °
Mastic Beach, Monday, 26 October
Climate normal for this date — 60-year average.
Average high58°
Average low50°
Average precipitation0.16 in
Chance of precipitation37%
Record high71° (2022)
Record low38° (1962)
Tue, 2758° / 50°0.16
58 °
Mastic Beach, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low50°
Average precipitation0.16 in
Chance of precipitation27%
Record high72° (2023)
Record low34° (1976)
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)
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.