Home   Weather   Long Island   Climate
Flag for USA

Climate & Weather Averages in Long Island, New York, USA

Currently: 65 °F. Overcast. (Weather station: Syracuse Hancock International Airport, USA). See more current weather

Annual Weather Averages Near Long Island

Averages are for Syracuse Hancock International Airport, which is 10 miles from Long Island.

Based on weather reports collected during 1992–2021.

Jan
32
17
2.67
Feb
34
18
2.49
Mar
42
25
2.99
Apr
56
36
3.42
May
70
47
3.37
Jun
78
57
3.75
Jul
82
62
4.03
Aug
81
61
3.82
Sep
74
53
3.3
Oct
61
43
4.03
Nov
49
33
3.28
Dec
38
24
3.42

All Year Climate & Weather Averages in Long Island

High Temp: 82 °F

Low Temp: 17 °F

Mean Temp: 49 °F

Precipitation: 3.38"

Humidity: 70%

Dew Point: 39 °F

Wind: 13 mph

Pressure: 30.03 "Hg

Visibility: 9 mi

January Climate & Weather Averages in Long Island

High Temp: 32 °F

Low Temp: 17 °F

Mean Temp: 25 °F

Precipitation: 2.67"

Humidity: 75%

Dew Point: 18 °F

Wind: 15 mph

Pressure: 30.07 "Hg

Visibility: 7 mi

February Climate & Weather Averages in Long Island

High Temp: 34 °F

Low Temp: 18 °F

Mean Temp: 26 °F

Precipitation: 2.49"

Humidity: 72%

Dew Point: 18 °F

Wind: 15 mph

Pressure: 30.06 "Hg

Visibility: 7 mi

March Climate & Weather Averages in Long Island

High Temp: 42 °F

Low Temp: 25 °F

Mean Temp: 34 °F

Precipitation: 2.99"

Humidity: 67%

Dew Point: 24 °F

Wind: 15 mph

Pressure: 30.07 "Hg

Visibility: 8 mi

April Climate & Weather Averages in Long Island

High Temp: 56 °F

Low Temp: 36 °F

Mean Temp: 46 °F

Precipitation: 3.42"

Humidity: 62%

Dew Point: 33 °F

Wind: 15 mph

Pressure: 29.98 "Hg

Visibility: 9 mi

May Climate & Weather Averages in Long Island

High Temp: 70 °F

Low Temp: 47 °F

Mean Temp: 58 °F

Precipitation: 3.37"

Humidity: 65%

Dew Point: 46 °F

Wind: 12 mph

Pressure: 29.99 "Hg

Visibility: 9 mi

June Climate & Weather Averages in Long Island

High Temp: 78 °F

Low Temp: 57 °F

Mean Temp: 67 °F

Precipitation: 3.75"

Humidity: 68%

Dew Point: 56 °F

Wind: 11 mph

Pressure: 29.94 "Hg

Visibility: 9 mi

July Climate & Weather Averages in Long Island

High Temp: 82 °F

Low Temp: 62 °F

Mean Temp: 72 °F

Precipitation: 4.03"

Humidity: 69%

Dew Point: 61 °F

Wind: 10 mph

Pressure: 29.95 "Hg

Visibility: 9 mi

August Climate & Weather Averages in Long Island

High Temp: 81 °F

Low Temp: 61 °F

Mean Temp: 71 °F

Precipitation: 3.82"

Humidity: 71%

Dew Point: 61 °F

Wind: 10 mph

Pressure: 29.99 "Hg

Visibility: 9 mi

September Climate & Weather Averages in Long Island

High Temp: 74 °F

Low Temp: 53 °F

Mean Temp: 63 °F

Precipitation: 3.30"

Humidity: 73%

Dew Point: 54 °F

Wind: 10 mph

Pressure: 30.05 "Hg

Visibility: 9 mi

October Climate & Weather Averages in Long Island

High Temp: 61 °F

Low Temp: 43 °F

Mean Temp: 52 °F

Precipitation: 4.03"

Humidity: 73%

Dew Point: 43 °F

Wind: 12 mph

Pressure: 30.04 "Hg

Visibility: 9 mi

November Climate & Weather Averages in Long Island

High Temp: 49 °F

Low Temp: 33 °F

Mean Temp: 41 °F

Precipitation: 3.28"

Humidity: 73%

Dew Point: 32 °F

Wind: 14 mph

Pressure: 30.09 "Hg

Visibility: 9 mi

December Climate & Weather Averages in Long Island

High Temp: 38 °F

Low Temp: 24 °F

Mean Temp: 31 °F

Precipitation: 3.42"

Humidity: 77%

Dew Point: 24 °F

Wind: 15 mph

Pressure: 30.08 "Hg

Visibility: 8 mi

Quick Climate Info

Hottest MonthJuly (72 °F avg)
Coldest MonthJanuary (25 °F avg)
Wettest MonthOctober (4.03" avg)
Windiest MonthJanuary (15 mph avg)
Annual precip.40.58" (per year)

Weather by CustomWeather, © 2025