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Average weather for Long Island in July

It's warm in July in Long Island with an average temperature of 29°C. Temperatures this month range from a low of 29°C to a high of 30°C. At night, you can expect temperatures between 27°C and 28°C.

Daily Temperature in July in Long Island

Start of July

The month of July starts in Long Island with hot temps, averaging around 30°C during the day and nights around 28°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.

Mid July

By mid-July, daytime temps stay steady at around 30°C, with nights around 28°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.

End of July

By the end of July, the average daytime temperature in Long Island is around 30°C, while nighttime temps are about 28°C. A shower might pop up, but overall, the weather will be dry and sunny. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.

In July, there is an average of 61 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the East.

Long Island in July

New York
Temperature Average temperature
29°C 31°C
Sun Max. temperature
30°C 33°C
Sun Min. temperature
29°C -5°C
Rain Total precipitation
61 mm 160 mm
Rain Rainy days
12 days 18 days

UV index

The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.

Is July a good time to visit Long Island?

Looking for great weather? July is a good time to be in Long Island. The temperatures are nice, and there’s not too much rain.

The hurricane season in Long Island runs from June to November.

Temperature records

With 33°C in 2023, Long Island reached the highest temperature in July over the past 10 years. The lowest daytime temperature in this month was 26°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 24°C to a highest value of 29°C.

Check out the climate of Long Island for all months and discover the best travel time

Daily Temperature in July in Long Island

This chart shows the average daily high and low temperatures in July for Long Island, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.

Daily Temperature in July in Long Island

Daily Precipitation in July in Long Island

The chart below shows the average daily precipitation in July for Long Island, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.

A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for July, you can expect about 12 days of precipitation in Long Island.

Daily Precipitation in July in Long Island

Daily UV index in July in Long Island

This chart shows the average daily UV index in July in Long Island, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

Daily UV Index in July in Long Island

Temperature in July in Long Island over the years

This chart shows the average temperature in July in Long Island, measured in degrees Celsius, over the past few years.

Temperature in July in Long Island Over the Years

Total precipitation in July in Long Island over the years

This chart shows the average precipitation in July in Long Island, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.

Precipitation in July in Long Island over the years

Daily weather in July for Long Island

Click on any day in July to get detailed info about the usual weather on that day in Long Island. Check out the historical temperatures and precipitation over the past 10 years on this day.

Weather experiences in July in Long Island

Have you been to Long Island in July?

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Average weather in Long Island by month

Click on a month below to see detailed weather info for Long Island. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.


Or check out the climate of Long Island for all months at once

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