June weather forecast
Stony Brook, NY

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Weather in June

The first month of the summer, June, is an agreeable month in Stony Brook, New York, with an average temperature fluctuating between 63.1°F (17.3°C) and 71.2°F (21.8°C).

Temperature

June marks a minor ascent in the average high-temperature, adjusting from May's enjoyable 62.6°F (17°C) to an agreeable 71.2°F (21.8°C). Stony Brook's evenings during June maintain an average temperature of 63.1°F (17.3°C), aligning closely with the daytime temperatures.

Humidity

May and June, with an average relative humidity of 77%, are the most humid months in Stony Brook.

Rainfall

In Stony Brook, in June, during 14.9 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, in Stony Brook, there are 146.8 rainfall days, and 33.78" (858mm) of precipitation is accumulated.

Snowfall

April through September are months without snowfall.

Ocean temperature

In June, the average ocean temperature in Stony Brook, New York, is 64.6°F (18.1°C).
Note: For the majority of people, swimming in water at 64.6°F (18.1°C) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

The month with the longest days in Stony Brook is June, with an average of 15h and 6min of daylight.
On the first day of the month, sunrise is at 5:22 am and sunset at 8:18 pm. On the last day of June, in Stony Brook, sunrise is at 5:24 am and sunset at 8:28 pm EDT.

Sunshine

The average sunshine in June in Stony Brook, New York, is 9.8h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In June, the maximum UV index of 6 suggests these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

What are June temperatures in Stony Brook?

The average high-temperature, in June, in Stony Brook, is 71.2°F (21.8°C), while the average low-temperature is 63.1°F (17.3°C).

What is the most humid month in Stony Brook?

The months with the highest humidity are May and June, with an average relative humidity of 77%.

What is the average humidity in June in Stony Brook?

In Stony Brook, the average relative humidity in June is 77%.

How much does it rain in Stony Brook in June?

In June, in Stony Brook, the rain falls for 14.9 days. Throughout June, 2.72" (69mm) of precipitation is accumulated.

When it does not snow in Stony Brook?

In Stony Brook, snow does not fall in April through September.

How cold is the water in June in Stony Brook?

In June, the average ocean temperature is 64.6°F (18.1°C). For swimming, a surface water temperature of 64.6°F (18.1°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

When are the longest days in Stony Brook?

June has the longest days of the year in Stony Brook, New York, with an average of 15h and 6min of daylight.

What is the average length of the day in June in Stony Brook?

In June, the average day length in Stony Brook is 15h and 4min.

What time are sunrise and sunset in June in Stony Brook?

On the first day of June in Stony Brook, sunrise is at 5:22 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 8:28 pm EDT.

How many hours of sunshine does Stony Brook have in June?

In Stony Brook, the average sunshine duration in June is 9.8h.

When is the highest UV index in Stony Brook?

The months with the highest UV index in Stony Brook are June through August, with an average maximum UV index of 6.

How high is the UV index in June in Stony Brook?

The average daily maximum UV index in June in Stony Brook is 6. A UV Index reading of 6 to 7 represents 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 June
Stony Brook, NY

Average temperature in June - Stony Brook, NY
  • Average high temperature in June: 71.2°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in June: 63.1°F

The months with the highest average low temperature are July and August (71.1°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).

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Average pressure in June
Stony Brook, NY

Average pressure in June - Stony Brook, NY
  • Average pressure in June: 29.93"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).

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Average wind speed in June
Stony Brook, NY

Average wind speed in June - Stony Brook, NY
  • Average wind speed in June: 8.6mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

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Average humidity in June
Stony Brook, NY

Average humidity in June - Stony Brook, NY
  • Average humidity in June: 77%

The months with the highest relative humidity are May and June (77%).
The month with the lowest relative humidity is November (71%).

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Average rainfall in June
Stony Brook, NY

Average rainfall in June - Stony Brook, NY
  • Average rainfall in June: 2.72"

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in June
Stony Brook, NY

Average rainfall days in June - Stony Brook, NY
  • Average rainfall days in June: 14.9 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall in June
Stony Brook, NY

Average snowfall in June - Stony Brook, NY
  • Average snowfall in June: 0"

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

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Average snowfall days in June
Stony Brook, NY

Average snowfall days in June - Stony Brook, NY
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in June
Stony Brook, NY

Average sea temperature in June - Stony Brook, NY
  • Average sea temperature in June: 64.6°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).

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Average daylight in June /
Average sunshine in June
Stony Brook, NY

Average daylight in June / Average sunshine in June - Stony Brook, NY
  • Average daylight in June: 15h and 1min

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 June: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in June
Stony Brook, NY

Average sunshine days in June - Stony Brook, NY
  • Average sunshine days in June: 13.1 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (13 days).

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Average UV index in June
Stony Brook, NY

Average UV index in June - Stony Brook, NY
  • Average UV index in June: 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).

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Average cloud cover in June
Stony Brook, NY

Average cloud cover in June - Stony Brook, NY
  • Average cloud cover in June: 35

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in June
Stony Brook, NY

Average visibility in June - Stony Brook, NY
  • Average visibility in June: 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).

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Stony Brook, New York, USA

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