July weather forecast
Locust Valley, NY

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Weather in July

July, the same as June, is another warm summer month in Locust Valley, New York, with an average temperature varying between 81.5°F (27.5°C) and 70.3°F (21.3°C).

Temperature

The temperatures reach their highest averages in July, with highs of 81.5°F (27.5°C) and lows of 70.3°F (21.3°C).

Heat index

July's average heat index is appraised at a tropical 86°F (30°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In Locust Valley, the average relative humidity in July is 73%.

Rainfall

In Locust Valley, during July, the rain falls for 17.9 days and regularly aggregates up to 4.02" (102mm) of precipitation. In Locust Valley, 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

The average length of the day in July is 14h and 46min.
On the first day of July, sunrise is at 5:26 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:11 pm EDT.

Sunshine

With an average of 10.7h of sunshine, July has the most sunshine of the year.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum high UV index of 6 in July translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months in Locust Valley?

The warmest period tends to be July, when average temperatures fluctuate between a high of 81.5°F (27.5°C) and a low of 70.3°F (21.3°C).

What are July temperatures in Locust Valley?

The high-temperature during July is 81.5°F (27.5°C) and the low-temperature is 70.3°F (21.3°C). 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 is the average humidity in July in Locust Valley?

The average relative humidity in July in Locust Valley is 73%.

How many days does it rain in July in Locust Valley?

In Locust Valley, in July, it is raining for 17.9 days, with typically 4.02" (102mm) of accumulated precipitation.

When it does not snow in Locust Valley?

May through October are months without snowfall.

What is the average length of the day in July in Locust Valley?

The average day length in July in Locust Valley, New York, is 14h and 46min.

When is the sunrise / sunset in July in Locust Valley?

On the first day of July, sunrise is at 5:26 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:11 pm EDT.

What month has the most sunshine in Locust Valley?

The month with the most sunshine in Locust Valley is July, with an average of 10.7h of sunshine.

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

The average sunshine duration in July in Locust Valley is 10.7h.

What is the month 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.

What is the UV index intensity in July in Locust Valley?

The average daily maximum UV index in July in Locust Valley, New York, is 6. A UV Index value 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 July
Locust Valley, NY

Average temperature in July - Locust Valley, NY
  • Average high temperature in July: 81.5°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 July: 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 July
Locust Valley, NY

Average pressure in July - Locust Valley, NY
  • Average pressure in July: 29.96"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 July
Locust Valley, NY

Average wind speed in July - Locust Valley, NY
  • Average wind speed in July: 7.3mph

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 July
Locust Valley, NY

Average humidity in July - Locust Valley, NY
  • Average humidity in July: 73%

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 July
Locust Valley, NY

Average rainfall in July - Locust Valley, NY
  • Average rainfall in July: 4.02"

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 July
Locust Valley, NY

Average rainfall days in July - Locust Valley, NY
  • Average rainfall days in July: 17.9 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 July
Locust Valley, NY

Average snowfall in July - Locust Valley, NY
  • Average snowfall in July: 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 July
Locust Valley, NY

Average snowfall days in July - Locust Valley, NY
  • Average snowfall days in July: 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 July /
Average sunshine in July
Locust Valley, NY

Average daylight in July / Average sunshine in July - Locust Valley, NY
  • Average daylight in July: 14h 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 July: 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 July
Locust Valley, NY

Average sunshine days in July - Locust Valley, NY
  • Average sunshine days in July: 10.6 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 July
Locust Valley, NY

Average UV index in July - Locust Valley, NY
  • Average UV index in July: 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 July
Locust Valley, NY

Average cloud cover in July - Locust Valley, NY
  • Average cloud cover in July: 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 July
Locust Valley, NY

Average visibility in July - Locust Valley, NY
  • Average visibility in July: 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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