Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July's onset witnesses a minor shift in the average high-temperature, moving from an agreeable 69.4°F (20.8°C) in June to a warm 76.8°F (24.9°C). July nights anticipate an average temperature of 70.9°F (21.6°C), a modest decline from the daytime.Humidity
In Riverhead, the average relative humidity in July is 79%.Rainfall
In Riverhead, during July, the rain falls for 15.6 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, in Riverhead, there are 154.3 rainfall days, and 30" (762mm) of precipitation is accumulated.Snowfall
April, June through October are months without snowfall.Daylight
The average length of the day in July is 14h and 46min.On the first day of the month, sunrise is at 5:22 am and sunset at 8:26 pm. On the last day of July, sunrise is at 5:46 am and sunset at 8:07 pm EDT.
Sunshine
July and August, with an average of 10.7h of sunshine, are months with the most sunshine.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 vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In July, the average maximum UV index of 6 translates into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in July?
What is the average humidity in July in Riverhead?
How many days does it rain in July?
When it does not snow?
What is the average length of the day in July in Riverhead?
When are sunrise and sunset in July?
What is the month with the most sunshine?
How many hours of sunshine does Riverhead have in July?
What is the month with the highest UV index?
How high is the UV index in July?
Average temperature in July
Riverhead, NY
- Average high temperature in July: 76.8°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in July: 70.9°F
The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in July
Riverhead, 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
Riverhead, NY
- Average wind speed in July: 9.5mph
The windiest month (with the highest average wind speed) is January (14.5mph).
The calmest month (with the lowest average wind speed) is July (9.5mph).
Average humidity in July
Riverhead, NY
- Average humidity in July: 79%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is November (71%).
Average rainfall in July
Riverhead, NY
- Average rainfall in July: 2.8"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in July
Riverhead, NY
- Average rainfall days in July: 15.6 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is February (9 days).
Average snowfall in July
Riverhead, NY
- Average snowfall in July: 0"
The month with the highest snowfall is March (1.54").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in July
Riverhead, NY
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (5.5 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
Riverhead, 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 months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in July
Riverhead, NY
- Average sunshine days in July: 13.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is February (13.2 days).
Average UV index in July
Riverhead, 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
Riverhead, NY
- Average cloud cover in July: 28
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in July
Riverhead, 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).
Riverhead, New York, USA
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