July weather forecast
Sayville, NY

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Weather in July

July in Sayville, New York, is a warm summer month, with an average temperature varying between 71.6°F (22°C) and 77.9°F (25.5°C).

Temperature

The start of July brings a subtle shift in the average high-temperature, edging up from June's pleasant 70.7°F (21.5°C) to a moderately hot 77.9°F (25.5°C). Nights in July in Sayville showcase an average temperature of 71.6°F (22°C), slightly cooler than the daytime.

Humidity

In July, the average relative humidity is 76%.

Rainfall

In Sayville, in July, during 17.7 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. In Sayville, New York, during the entire year, the rain falls for 155.3 days and collects up to 34.84" (885mm) of precipitation.

Snowfall

April, June through September and November are months without snowfall in Sayville.

Daylight

In July, the average length of the day in Sayville is 14h and 45min.
On the first day of July in Sayville, sunrise is at 5:25 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:08 pm EDT.

Sunshine

With an average of 10.8h of sunshine, July has the most sunshine of the year in Sayville.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 6 during July leads to these advisories:
Prevent overexposure. Protection from the sun's harmful effects is needed. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Sayville in July?

In July, in Sayville, the average high-temperature is 77.9°F (25.5°C), and the average low-temperature is 71.6°F (22°C).

What is the average humidity in July in Sayville?

In July, the average relative humidity in Sayville, New York, is 76%.

How much does it rain in Sayville in July?

In July, the rain falls for 17.7 days. Throughout July, 3.62" (92mm) of precipitation is accumulated.

When it does not snow in Sayville?

April, June through September and November are months without snowfall in Sayville, New York.

How many hours of daylight does Sayville have in July?

The average day length in July in Sayville, New York, is 14h and 45min.

What time are sunrise and sunset in July in Sayville?

In July, on the first day of the month, sunrise is at 5:25 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:08 pm EDT.

What month has the most sunshine in Sayville?

The month with the most sunshine is July, with an average of 10.8h of sunshine.

How many hours of sunshine does Sayville have in July?

In July, the average sunshine duration is 10.8h.

What is the month with the highest UV index in Sayville?

The months with the highest UV index in Sayville, New York, are June through August, with an average maximum UV index of 6.

What is the UV index reading in July in Sayville?

In Sayville, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to 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 July
Sayville, NY

Average temperature in July - Sayville, NY
  • Average high temperature in July: 77.9°F

The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in July: 71.6°F

The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

Average pressure in July
Sayville, NY

Average pressure in July - Sayville, NY
  • Average pressure in July: 29.96"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 July
Sayville, NY

Average wind speed in July - Sayville, NY
  • Average wind speed in July: 9mph

The windiest month (with the highest average wind speed) is January (13.8mph).
The calmest months (with the lowest average wind speed) are July and August (9mph).

Average humidity in July
Sayville, NY

Average humidity in July - Sayville, NY
  • Average humidity in July: 76%

The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).

Average rainfall in July
Sayville, NY

Average rainfall in July - Sayville, NY
  • Average rainfall in July: 3.62"

The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days in July
Sayville, NY

Average rainfall days in July - Sayville, NY
  • Average rainfall days in July: 17.7 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in July
Sayville, NY

Average snowfall in July - Sayville, NY
  • Average snowfall in July: 0"

The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, June, July, August, September and November (0").

Average snowfall days in July
Sayville, NY

Average snowfall days in July - Sayville, NY
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Sayville, NY

Average daylight in July / Average sunshine in July - Sayville, NY
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in July: 10h and 5min

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 48min).

Average sunshine days in July
Sayville, NY

Average sunshine days in July - Sayville, NY
  • Average sunshine days in July: 11.3 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in July
Sayville, NY

Average UV index in July - Sayville, 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 and December (UV index 2).

Average cloud cover in July
Sayville, NY

Average cloud cover in July - Sayville, NY
  • Average cloud cover in July: 28

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in July
Sayville, NY

Average visibility in July - Sayville, 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).

Sayville, New York, USA

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