August weather forecastSyosset, NY
August
Weather in August
The last month of the summer, August, is another warm month in Syosset, New York, with temperature in the range of an average low of 71.2°F (21.8°C) and an average high of 79.2°F (26.2°C).Temperature
The introduction of August notes a subtle temperature variation to a still warm 79.2°F (26.2°C) from July's 80.1°F (26.7°C). An average low-temperature of 71.2°F (21.8°C), slightly less than the daytime peak, marks the month of August.Humidity
The average relative humidity in August in Syosset is 72%.Rainfall
In Syosset, during August, the rain falls for 10.8 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, in Syosset, there are 103.6 rainfall days, and 7.83" (199mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall in Syosset.Daylight
In Syosset, New York, the average length of the day in August is 13h and 45min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:20 am and sunset at 7:27 pm EDT.
Sunshine
The average sunshine in August in Syosset, New York, is 10.6h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Syosset, NY
- Average high temperature in August: 79.2°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in August: 71.2°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in August
Syosset, NY
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Syosset, NY
- Average wind speed in August: 8.3mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in August
Syosset, NY
- Average humidity in August: 72%
The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is November (71%).
Average rainfall in August
Syosset, NY
- Average rainfall in August: 0.71"
The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in August
Syosset, NY
- Average rainfall days in August: 10.8 days
The month with the highest number of rainy days is July (11.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in August
Syosset, NY
- Average snowfall in August: 0"
The month with the highest snowfall is March (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in August
Syosset, NY
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Syosset, NY
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 10h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in August
Syosset, NY
- Average sunshine days in August: 17.4 days
The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is July (16.9 days).
Average UV index in August
Syosset, NY
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in August
Syosset, NY
- Average cloud cover in August: 28
The month with the most cloud cover is December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in August
Syosset, NY
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





