Monthly outlook for Copiague, NY: average high 82.1°, average low 71.5°. That is 2.5° above the climate normal for August. Precipitation is expected on 6 days (about 2.0 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 11 August (91.8°), the coolest 23 August (63.7°).
82.1°/71.5°
Average high / low
+2.5°
Above normal
6 / 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
84.4°
78.2°
+3.4°
18 August – 27 August
78.3°
76.7°
+0.8°
28 August – 6 September
at normal
75.7°
—
August records over 66 years
91.8°2 August 1975All-time high
52.9°29 August 1982All-time low
Climate normals and records are computed from the nearest reference point — Massapequa Park (3 mi).
Sun, 0991° / 75°0
91 °
Copiague, Sunday, 9 August
Overcast. High 91°, low 75°.
Pressure29.94 inHg
Wind9.7 mph W
Humidity45%
Visibility6.2 mi
Dew point64°
Mon, 1087° / 74°0.02
87 °
Copiague, Monday, 10 August
Light rain. High 87°, low 74°.
Pressure29.97 inHg
Wind8.7 mph S
Humidity49%
Visibility6.2 mi
Dew point64°
Tue, 1192° / 78°0.02
92 °
Copiague, Tuesday, 11 August
Light rain. High 92°, low 78°.
Pressure29.85 inHg
Wind8.7 mph NW
Humidity36%
Visibility6.2 mi
Dew point57°
Wed, 1281° / 75°0.25
81 °
Copiague, Wednesday, 12 August
Light rain. High 81°, low 75°.
Pressure29.74 inHg
Wind7.8 mph NW
Humidity65%
Visibility6.2 mi
Dew point67°
Thu, 1389° / 72°0.05
89 °
Copiague, Thursday, 13 August
Light rain. High 89°, low 72°.
Pressure29.74 inHg
Wind17.4 mph W
Humidity59%
Visibility—
Dew point66°
Fri, 1479° / 70°0
79 °
Copiague, Friday, 14 August
Overcast. High 79°, low 70°.
Pressure29.94 inHg
Wind13 mph N
Humidity38%
Visibility—
Dew point46°
Sat, 1578° / 66°0
78 °
Copiague, Saturday, 15 August
Clear. High 78°, low 66°.
Pressure30.15 inHg
Wind11.9 mph N
Humidity38%
Visibility—
Dew point44°
Sun, 1680° / 69°0
80 °
Copiague, Sunday, 16 August
Overcast. High 80°, low 69°.
Pressure30.30 inHg
Wind9.7 mph S
Humidity36%
Visibility—
Dew point45°
Mon, 1778° / 71°0
78 °
Copiague, Monday, 17 August
Partly cloudy. High 78°, low 71°.
Pressure30.24 inHg
Wind13.8 mph S
Humidity48%
Visibility—
Dew point55°
Tue, 1880° / 74°0.25
80 °
Copiague, Tuesday, 18 August
Light rain. High 80°, low 74°.
Pressure30.00 inHg
Wind16.8 mph SW
Humidity72%
Visibility—
Dew point68°
Wed, 1982° / 73°0.11
82 °
Copiague, Wednesday, 19 August
Light rain. High 82°, low 73°.
Pressure29.85 inHg
Wind8.8 mph W
Humidity63%
Visibility—
Dew point64°
Thu, 2079° / 72°0.02
79 °
Copiague, Thursday, 20 August
Light rain. High 79°, low 72°.
Pressure29.97 inHg
Wind9.9 mph N
Humidity61%
Visibility—
Dew point60°
Fri, 2176° / 70°0.89
76 °
Copiague, Friday, 21 August
Heavy rain. High 76°, low 70°.
Pressure29.97 inHg
Wind13.8 mph SW
Humidity56%
Visibility—
Dew point59°
Sat, 2280° / 71°0.4
80 °
Copiague, Saturday, 22 August
Rain. High 80°, low 71°.
Pressure29.77 inHg
Wind9.2 mph N
Humidity85%
Visibility—
Dew point67°
Sun, 2373° / 64°0
73 °
Copiague, Sunday, 23 August
Partly cloudy. High 73°, low 64°.
Pressure29.94 inHg
Wind20.2 mph NW
Humidity40%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2476° / 67°0.07
76 °
Copiague, Monday, 24 August
Climate normal for this date — 60-year average.
Average high76°
Average low67°
Average precipitation0.07 in
Chance of precipitation22%
Record high86° (2021)
Record low56° (1971)
Tue, 2577° / 67°0.09
77 °
Copiague, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low67°
Average precipitation0.09 in
Chance of precipitation23%
Record high89° (2020)
Record low59° (1963)
Wed, 2677° / 68°0.07
77 °
Copiague, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.07 in
Chance of precipitation22%
Record high85° (2016)
Record low61° (1960)
Thu, 2777° / 69°0.13
77 °
Copiague, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low69°
Average precipitation0.13 in
Chance of precipitation33%
Record high89° (2020)
Record low59° (1969)
Fri, 2877° / 69°0.19
77 °
Copiague, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low69°
Average precipitation0.19 in
Chance of precipitation38%
Record high88° (1973)
Record low58° (1986)
Sat, 2976° / 69°0.14
76 °
Copiague, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low69°
Average precipitation0.14 in
Chance of precipitation30%
Record high85° (2010)
Record low53° (1982)
Sun, 3077° / 68°0.08
77 °
Copiague, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low68°
Average precipitation0.08 in
Chance of precipitation27%
Record high88° (1973)
Record low55° (1965)
Mon, 3176° / 68°0.05
76 °
Copiague, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low68°
Average precipitation0.05 in
Chance of precipitation20%
Record high89° (2010)
Record low56° (1976)
Tue, 0175° / 67°0.06
75 °
Copiague, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low67°
Average precipitation0.06 in
Chance of precipitation28%
Record high86° (1973)
Record low55° (2017)
Wed, 0275° / 66°0.16
75 °
Copiague, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low66°
Average precipitation0.16 in
Chance of precipitation30%
Record high86° (1966)
Record low55° (2017)
Thu, 0375° / 67°0.12
75 °
Copiague, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low67°
Average precipitation0.12 in
Chance of precipitation30%
Record high84° (1973)
Record low56° (1967)
Fri, 0476° / 67°0.12
76 °
Copiague, 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 °
Copiague, 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, 0674° / 66°0.17
74 °
Copiague, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low66°
Average precipitation0.17 in
Chance of precipitation37%
Record high88° (2023)
Record low56° (1962)
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 Copiague, 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 Copiague, 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.