August weather forecast
Locust Valley, NY

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Weather in August

The last month of the summer, August, is another warm month in Locust Valley, New York, with an average temperature ranging between max 80.4°F (26.9°C) and min 70.3°F (21.3°C).

Temperature

August brings an average high-temperature of a still moderately hot 80.4°F (26.9°C), nearly identical to the preceding month. In August, the nighttime temperature lowers to an average of 70.3°F (21.3°C).

Humidity

August and November, with an average relative humidity of 71%, are the least humid months.

Rainfall

In Locust Valley, in August, it is raining for 16.2 days, with typically 3.54" (90mm) of accumulated precipitation. In Locust Valley, New York, during the entire year, the rain falls for 165.9 days and collects up to 37.56" (954mm) of precipitation.

Snowfall

May through October are months without snowfall in Locust Valley.

Daylight

In August, the average length of the day in Locust Valley is 13h and 45min.
On the first day of August in Locust Valley, sunrise is at 5:51 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:27 pm EDT.

Sunshine

The average sunshine in August in Locust Valley, 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 reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In August, a daily UV index of 6 turns into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Locust Valley in August?

In Locust Valley, 80.4°F (26.9°C) is the average high-temperature and 70.3°F (21.3°C) is the average low-temperature during August. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is appraised at 86°F (30°C).

What are the least humid months in Locust Valley?

The months with the lowest humidity in Locust Valley, New York, are August and November, with an average relative humidity of 71%.

What is the average humidity in August in Locust Valley?

The average relative humidity in August is 71%.

How much does it rain in Locust Valley in August?

In Locust Valley, in August, it is raining for 16.2 days, with typically 3.54" (90mm) of accumulated precipitation.

When it does not snow in Locust Valley?

In Locust Valley, New York, snow does not fall in May through October.

How many hours of daylight does Locust Valley have in August?

The average day length in August is 13h and 45min.

What time are sunrise and sunset in August in Locust Valley?

In August, on the first day of the month, sunrise is at 5:51 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:27 pm EDT.

How long on average sun shines in August in Locust Valley?

In Locust Valley, the average sunshine duration in August is 10.6h.

What are the months with the highest UV index in Locust Valley?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Locust Valley.

How high is the UV index in August in Locust Valley?

In August, the average daily maximum UV index in Locust Valley is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
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
Locust Valley, NY

Average temperature in August - Locust Valley, NY
  • Average high temperature in August: 80.4°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in August: 70.3°F

The months with the highest average low temperature are July and August (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in August
Locust Valley, NY

Average pressure in August - Locust Valley, 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).

Average wind speed in August
Locust Valley, NY

Average wind speed in August - Locust Valley, NY
  • Average wind speed in August: 7.4mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

Average humidity in August
Locust Valley, NY

Average humidity in August - Locust Valley, NY
  • Average humidity in August: 71%

The months with the highest relative humidity are February, May and December (75%).
The months with the lowest relative humidity are August and November (71%).

Average rainfall in August
Locust Valley, NY

Average rainfall in August - Locust Valley, NY
  • Average rainfall in August: 3.54"

The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (2.4").

Average rainfall days in August
Locust Valley, NY

Average rainfall days in August - Locust Valley, NY
  • Average rainfall days in August: 16.2 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in August
Locust Valley, NY

Average snowfall in August - Locust Valley, NY
  • Average snowfall in August: 0"

The month with the highest snowfall is March (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Locust Valley, NY

Average snowfall days in August - Locust Valley, NY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Locust Valley, NY

Average daylight in August / Average sunshine in August - Locust Valley, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in August
Locust Valley, NY

Average sunshine days in August - Locust Valley, NY
  • Average sunshine days in August: 12.5 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (10.6 days).

Average UV index in August
Locust Valley, NY

Average UV index in August - Locust Valley, 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).

Average cloud cover in August
Locust Valley, NY

Average cloud cover in August - Locust Valley, NY
  • Average cloud cover in August: 29

The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 29).

Average visibility in August
Locust Valley, NY

Average visibility in August - Locust Valley, 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).

Locust Valley, New York, USA

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