July weather forecast and climate
Islip, NY

What is the warmest month in Islip?

July is the warmest month in Islip, with an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 66°F (18.9°C).

What is the temperature in July in Islip?

In July, in Islip, New York, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 66°F (18.9°C).

How many days does it rain in July in Islip?

In Islip, in July, it is raining for 9.1 days, with typically 3.4" (87.1mm) of accumulated precipitation.

What is the sea temperature in July in Islip?

The average seawater temperature, in July, in Islip, New York, is 72.1°F (22.3°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 72.1°F (22.3°C) water may be enjoyable. The official water temperature required for the Olympic swimming competition is 77°F (25°C) to 82.4°F (28°C).
Average temperature in July - Islip, NY
  • Average high temperature in July: 81.7°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (38°F).

  • Average low temperature in July: 66°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (23.3°F).

Average rainfall in July - Islip, NY
  • Average rainfall in July: 3.4"

The wettest month (with the highest rainfall) is March (4.4").
The driest month (with the lowest rainfall) is February (3.3").

Average rainfall days in July - Islip, NY
  • Average rainfall days in July: 9.1 days

The month with the highest number of rainy days is April (11.3 days).
Months with the lowest number of rainy days are August and October (8.5 days).

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

The month with the highest snowfall is February (7.1").
Months with the lowest snowfall are May, June, July, August, September and October (0").

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

The month with the highest number of snowfall days is January (3.7 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in July - Islip, NY
  • Average sea temperature in July: 72.1°F

The best month for swimming (with the highest average sea temperature) is August (74°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).

Average daylight in July - Islip, NY
  • Average daylight in July: 14.7h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).

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