August weather forecast
Mount Vernon, NY

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Weather in August

August continues July's summery tune in Mount Vernon, with temperatures marginally stepping down from the peak. This month marks a gentle decrease on the rainfall chart that had been steady until now. Longer sunshine hours persist, enhancing outdoor fun activities. The breeze twirls and swirls, picking up a hint of forthcoming autumn. August sashays towards the close of summer, providing a befitting farewell with its lovely weather.

Temperature

The onset of August in Mount Vernon marks an average high-temperature of a still warm 81.9°F (27.7°C), hardly differing from July's 83.5°F (28.6°C). Throughout August, an average low-temperature of 68.9°F (20.5°C) is experienced in Mount Vernon.

Heat index

In August, the average heat index is calculated to be a tropical 86°F (30°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
One should consider that heat index numbers are for shaded settings and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

With an average relative humidity of 69%, August is the least humid month.

Rainfall

In Mount Vernon, during August, the rain falls for 16.5 days and regularly aggregates up to 3.31" (84mm) of precipitation. Throughout the year, in Mount Vernon, there are 156.5 rainfall days, and 33.19" (843mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Mount Vernon.

Daylight

The average length of the day in August in Mount Vernon is 13h and 46min.
On the first day of the month, sunrise is at 5:52 am and sunset at 8:11 pm. On the last day of August, in Mount Vernon, New York, sunrise is at 6:21 am and sunset at 7:28 pm EDT.

Sunshine

In August, the average sunshine in Mount Vernon is 10.4h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the temperature in August in Mount Vernon?

The average high-temperature, in August, in Mount Vernon, is 81.9°F (27.7°C), while the average low-temperature is 68.9°F (20.5°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in August is calculated to be 86°F (30°C).

What is the least humid month in Mount Vernon?

The least humid month is August, with an average relative humidity of 69%.

What is the average humidity in August in Mount Vernon?

In August, the average relative humidity in Mount Vernon, New York, is 69%.

How much does it rain in Mount Vernon in August?

In Mount Vernon, during August, the rain falls for 16.5 days and regularly aggregates up to 3.31" (84mm) of precipitation.

When it does not snow in Mount Vernon?

May through October are months without snowfall.

How many hours of daylight does Mount Vernon have in August?

In August, the average day length is 13h and 46min.

When is the sunrise / sunset in August in Mount Vernon?

On the first day of August in Mount Vernon, New York, sunrise is at 5:52 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 7:28 pm EDT.

How long on average sun shines in August in Mount Vernon?

In August, the average sunshine duration in Mount Vernon is 10.4h.

When is the highest UV index in Mount Vernon?

The months with the highest UV index in Mount Vernon are June through August, with an average maximum UV index of 6.

What is the UV index reading in August in Mount Vernon?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Mount Vernon, NY

Average temperature in August - Mount Vernon, NY
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in August: 68.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

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Average pressure in August
Mount Vernon, NY

Average pressure in August - Mount Vernon, NY
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Mount Vernon, NY

Average wind speed in August - Mount Vernon, NY
  • Average wind speed in August: 6.4mph

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

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Average humidity in August
Mount Vernon, NY

Average humidity in August - Mount Vernon, NY
  • Average humidity in August: 69%

The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is August (69%).

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Average rainfall in August
Mount Vernon, NY

Average rainfall in August - Mount Vernon, NY
  • Average rainfall in August: 3.31"

The wettest month (with the highest rainfall) is July (3.74").
The driest month (with the least rainfall) is February (2.01").

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Average rainfall days in August
Mount Vernon, NY

Average rainfall days in August - Mount Vernon, NY
  • Average rainfall days in August: 16.5 days

The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is January (8 days).

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Average snowfall in August
Mount Vernon, NY

Average snowfall in August - Mount Vernon, NY
  • Average snowfall in August: 0"

The month with the highest snowfall is March (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Mount Vernon, NY

Average snowfall days in August - Mount Vernon, NY
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Mount Vernon, NY

Average daylight in August / Average sunshine in August - Mount Vernon, NY
  • Average daylight in August: 13h and 5min

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 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in August
Mount Vernon, NY

Average sunshine days in August - Mount Vernon, NY
  • Average sunshine days in August: 12.4 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (10.7 days).

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Average UV index in August
Mount Vernon, NY

Average UV index in August - Mount Vernon, 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, November and December (UV index 2).

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Average cloud cover in August
Mount Vernon, NY

Average cloud cover in August - Mount Vernon, NY
  • Average cloud cover in August: 30

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in August
Mount Vernon, NY

Average visibility in August - Mount Vernon, 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).

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Mount Vernon, New York, USA

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