Monthly outlook for Mastic, NY: average high 64.1°, average low 53.7°. That is 1.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 4 days and 2.2 inches. The warmest day looks like 12 October (74.7°), the coolest 7 October (43.6°).
64.1°/53.7°
Average high / low
+1.1°
Above normal
5 / 4
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
66.4°
63.3°
+1.7°
17 October – 26 October
60.3°
59.8°
+0.3°
27 October – 5 November
at normal
57.2°
—
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 (6 mi).
Thu, 0873° / 54°0.02
73 °
Mastic, Thursday, 8 October
Light rain. High 73°, low 54°.
Pressure29.85 inHg
Wind6.9 mph SW
Humidity72%
Visibility6.2 mi
Dew point58°
Fri, 0968° / 51°0
68 °
Mastic, Friday, 9 October
Clear. High 68°, low 51°.
Pressure30.18 inHg
Wind8.1 mph NW
Humidity48%
Visibility6.2 mi
Dew point45°
Sat, 1067° / 51°0
67 °
Mastic, Saturday, 10 October
Overcast. High 67°, low 51°.
Pressure30.42 inHg
Wind5.2 mph S
Humidity45%
Visibility6.2 mi
Dew point45°
Sun, 1170° / 61°0.22
70 °
Mastic, Sunday, 11 October
Rain. High 70°, low 61°.
Pressure30.30 inHg
Wind14.9 mph SE
Humidity77%
Visibility—
Dew point61°
Mon, 1275° / 65°0.65
75 °
Mastic, Monday, 12 October
Rain. High 75°, low 65°.
Pressure29.53 inHg
Wind16.3 mph SE
Humidity94%
Visibility—
Dew point68°
Tue, 1368° / 54°0.24
68 °
Mastic, Tuesday, 13 October
Rain. High 68°, low 54°.
Pressure29.83 inHg
Wind21.5 mph NE
Humidity75%
Visibility—
Dew point58°
Wed, 1458° / 50°0.02
58 °
Mastic, Wednesday, 14 October
Light rain. High 58°, low 50°.
Pressure30.15 inHg
Wind19.8 mph NE
Humidity64%
Visibility—
Dew point41°
Thu, 1559° / 51°0
59 °
Mastic, Thursday, 15 October
Partly cloudy. High 59°, low 51°.
Pressure30.30 inHg
Wind14.7 mph E
Humidity59%
Visibility—
Dew point41°
Fri, 1661° / 55°0.04
61 °
Mastic, Friday, 16 October
Light rain. High 61°, low 55°.
Pressure30.24 inHg
Wind13.2 mph NE
Humidity87%
Visibility—
Dew point55°
Sat, 1763° / 58°0.1
63 °
Mastic, Saturday, 17 October
Light rain. High 63°, low 58°.
Pressure29.94 inHg
Wind10.8 mph NW
Humidity85%
Visibility—
Dew point58°
Sun, 1856° / 51°0
56 °
Mastic, Sunday, 18 October
Clear. High 56°, low 51°.
Pressure29.97 inHg
Wind19.3 mph NW
Humidity59%
Visibility—
Dew point39°
Mon, 1958° / 49°0
58 °
Mastic, Monday, 19 October
Clear. High 58°, low 49°.
Pressure30.24 inHg
Wind10.9 mph SW
Humidity49%
Visibility—
Dew point35°
Tue, 2061° / 55°0
61 °
Mastic, Tuesday, 20 October
Mostly clear. High 61°, low 55°.
Pressure30.30 inHg
Wind9.1 mph SW
Humidity52%
Visibility—
Dew point42°
Wed, 2162° / 56°0
62 °
Mastic, Wednesday, 21 October
Partly cloudy. High 62°, low 56°.
Pressure30.30 inHg
Wind6 mph S
Humidity63%
Visibility—
Dew point47°
Thu, 2262° / 57°0
62 °
Mastic, Thursday, 22 October
Overcast. High 62°, low 57°.
Pressure30.18 inHg
Wind8.3 mph SE
Humidity69%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2359° / 51°0.08
59 °
Mastic, Friday, 23 October
Climate normal for this date — 60-year average.
Average high59°
Average low51°
Average precipitation0.08 in
Chance of precipitation25%
Record high70° (2007)
Record low34° (1969)
Sat, 2459° / 51°0.15
59 °
Mastic, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high59°
Average low51°
Average precipitation0.15 in
Chance of precipitation35%
Record high71° (2017)
Record low35° (1969)
Sun, 2560° / 51°0.16
60 °
Mastic, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high60°
Average low51°
Average precipitation0.16 in
Chance of precipitation35%
Record high71° (2022)
Record low42° (1960)
Mon, 2658° / 50°0.16
58 °
Mastic, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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)
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, 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, 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.