Monthly outlook for Harbor Green, NY: average high 81.7°, average low 72°. That is 2° above the climate normal for August. Precipitation is expected on 5 days (about 2.0 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 9 August (91.3°), the coolest 23 August (64°).
81.7°/72°
Average high / low
+2°
Above normal
5 / 5
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
83.8°
78.7°
+2.8°
18 August – 27 August
78.2°
77.3°
+0.5°
28 August – 6 September
at normal
76.2°
—
August records over 66 years
92.7°2 August 1975All-time high
52.7°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Massapequa (1 mi).
Sun, 0991° / 75°0
91 °
Harbor Green, Sunday, 9 August
Overcast. High 91°, low 75°.
Pressure29.94 inHg
Wind10.5 mph W
Humidity50%
Visibility6.2 mi
Dew point64°
Mon, 1086° / 74°0.03
86 °
Harbor Green, Monday, 10 August
Light rain. High 86°, low 74°.
Pressure29.97 inHg
Wind8.2 mph S
Humidity53%
Visibility6.2 mi
Dew point65°
Tue, 1190° / 79°0.02
90 °
Harbor Green, Tuesday, 11 August
Light rain. High 90°, low 79°.
Pressure29.85 inHg
Wind8.7 mph NW
Humidity38%
Visibility6.2 mi
Dew point58°
Wed, 1281° / 76°0.25
81 °
Harbor Green, Wednesday, 12 August
Rain. High 81°, low 76°.
Pressure29.74 inHg
Wind7.5 mph NW
Humidity66%
Visibility6.2 mi
Dew point67°
Thu, 1388° / 72°0.04
88 °
Harbor Green, Thursday, 13 August
Light rain. High 88°, low 72°.
Pressure29.74 inHg
Wind19.1 mph W
Humidity62%
Visibility—
Dew point67°
Fri, 1479° / 71°0
79 °
Harbor Green, Friday, 14 August
Overcast. High 79°, low 71°.
Pressure29.94 inHg
Wind14.4 mph N
Humidity38%
Visibility—
Dew point46°
Sat, 1578° / 67°0
78 °
Harbor Green, Saturday, 15 August
Clear. High 78°, low 67°.
Pressure30.15 inHg
Wind12.3 mph N
Humidity39%
Visibility—
Dew point45°
Sun, 1679° / 70°0
79 °
Harbor Green, Sunday, 16 August
Overcast. High 79°, low 70°.
Pressure30.30 inHg
Wind10.7 mph S
Humidity37%
Visibility—
Dew point46°
Mon, 1778° / 71°0
78 °
Harbor Green, Monday, 17 August
Partly cloudy. High 78°, low 71°.
Pressure30.24 inHg
Wind15.2 mph S
Humidity50%
Visibility—
Dew point55°
Tue, 1880° / 74°0.25
80 °
Harbor Green, Tuesday, 18 August
Light rain. High 80°, low 74°.
Pressure30.00 inHg
Wind17.3 mph SW
Humidity72%
Visibility—
Dew point68°
Wed, 1982° / 74°0.11
82 °
Harbor Green, Wednesday, 19 August
Light rain. High 82°, low 74°.
Pressure29.85 inHg
Wind9.8 mph W
Humidity64%
Visibility—
Dew point64°
Thu, 2079° / 72°0.01
79 °
Harbor Green, Thursday, 20 August
Light rain. High 79°, low 72°.
Pressure29.97 inHg
Wind10.5 mph N
Humidity59%
Visibility—
Dew point59°
Fri, 2177° / 71°0.89
77 °
Harbor Green, Friday, 21 August
Heavy rain. High 77°, low 71°.
Pressure29.97 inHg
Wind15.1 mph SW
Humidity55%
Visibility—
Dew point59°
Sat, 2279° / 71°0.39
79 °
Harbor Green, Saturday, 22 August
Rain. High 79°, low 71°.
Pressure29.77 inHg
Wind9.5 mph N
Humidity84%
Visibility—
Dew point67°
Sun, 2373° / 64°0
73 °
Harbor Green, Sunday, 23 August
Partly cloudy. High 73°, low 64°.
Pressure29.94 inHg
Wind21.4 mph NW
Humidity40%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2477° / 67°0.07
77 °
Harbor Green, Monday, 24 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.07 in
Chance of precipitation22%
Record high86° (2021)
Record low56° (1971)
Tue, 2578° / 67°0.09
78 °
Harbor Green, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low67°
Average precipitation0.09 in
Chance of precipitation23%
Record high89° (2020)
Record low59° (1963)
Wed, 2677° / 68°0.07
77 °
Harbor Green, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.07 in
Chance of precipitation22%
Record high86° (2016)
Record low61° (1963)
Thu, 2778° / 69°0.13
78 °
Harbor Green, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low69°
Average precipitation0.13 in
Chance of precipitation33%
Record high89° (2020)
Record low59° (1969)
Fri, 2878° / 69°0.19
78 °
Harbor Green, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low69°
Average precipitation0.19 in
Chance of precipitation38%
Record high89° (1973)
Record low58° (1986)
Sat, 2977° / 68°0.14
77 °
Harbor Green, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.14 in
Chance of precipitation30%
Record high86° (2010)
Record low53° (1982)
Sun, 3077° / 68°0.08
77 °
Harbor Green, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.08 in
Chance of precipitation27%
Record high89° (1973)
Record low55° (1965)
Mon, 3177° / 67°0.05
77 °
Harbor Green, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.05 in
Chance of precipitation20%
Record high89° (2010)
Record low56° (1976)
Tue, 0176° / 67°0.06
76 °
Harbor Green, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.06 in
Chance of precipitation28%
Record high87° (1973)
Record low55° (2017)
Wed, 0275° / 66°0.16
75 °
Harbor Green, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.16 in
Chance of precipitation30%
Record high87° (1966)
Record low55° (2017)
Thu, 0376° / 67°0.12
76 °
Harbor Green, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.12 in
Chance of precipitation30%
Record high85° (1993)
Record low56° (1967)
Fri, 0476° / 67°0.12
76 °
Harbor Green, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.12 in
Chance of precipitation25%
Record high86° (2018)
Record low56° (1997)
Sat, 0575° / 67°0.05
75 °
Harbor Green, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low67°
Average precipitation0.05 in
Chance of precipitation17%
Record high87° (2023)
Record low57° (2000)
Sun, 0675° / 66°0.17
75 °
Harbor Green, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.17 in
Chance of precipitation37%
Record high88° (2023)
Record low56° (1984)
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 Harbor Green, 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 Harbor Green, 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.