July weather forecast
Stoney Brook, MD

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Weather in July

July is a tropical summer month in Stoney Brook, Maryland, with an average temperature fluctuating between 87.3°F (30.7°C) and 68.7°F (20.4°C).

Temperature

In Stoney Brook, temperatures reach their average annual highs in July, measuring 87.3°F (30.7°C) and a minimum average of 68.7°F (20.4°C).

Heat index

For July, the heat index is evaluated at a torrid 98.6°F (37°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

July is the least humid month in Stoney Brook, Maryland, with an average relative humidity of 70%.

Rainfall

In July, the rain falls for 17.5 days. Throughout July, 3.23" (82mm) of precipitation is accumulated. In Stoney Brook, during the entire year, the rain falls for 161.3 days and collects up to 33.19" (843mm) of precipitation.

Snowfall

In Stoney Brook, snow does not fall in May through October.

Daylight

In Stoney Brook, Maryland, the average length of the day in July is 14h and 35min.
On the first day of July in Stoney Brook, sunrise is at 5:46 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:20 pm EDT.

Sunshine

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 6 during July translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. 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. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

What month is the hottest in Stoney Brook?

With average temperatures fluctuating between a high of 87.3°F (30.7°C) and a low of 68.7°F (20.4°C), July stands out as the warmest month in Stoney Brook, Maryland.

How hot is July in Stoney Brook?

In July, the average high-temperature and low-temperature in Stoney Brook are 87.3°F (30.7°C) and 68.7°F (20.4°C) respectively. In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 98.6°F (37°C).

What is the least humid month in Stoney Brook?

With an average relative humidity of 70%, July is the least humid month in Stoney Brook.

What is the average humidity in July in Stoney Brook?

The average relative humidity in July in Stoney Brook is 70%.

How many days does it rain in July in Stoney Brook?

In Stoney Brook, Maryland, in July, it is raining for 17.5 days, with typically 3.23" (82mm) of accumulated precipitation.

When it does not snow in Stoney Brook?

May through October are months without snowfall in Stoney Brook, Maryland.

What is the average length of the day in July in Stoney Brook?

In July, the average day length in Stoney Brook, Maryland, is 14h and 35min.

When are sunrise and sunset in July in Stoney Brook?

On the first day of July in Stoney Brook, Maryland, sunrise is at 5:46 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:20 pm EDT.

What month has the most sunshine in Stoney Brook?

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

How many hours of sunshine does Stoney Brook have in July?

The average sunshine duration in July in Stoney Brook is 10.8h.

When is the highest UV index in Stoney Brook?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Stoney Brook.

What is the UV index intensity in July in Stoney Brook?

The average daily maximum UV index in July in Stoney Brook is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe 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 July
Stoney Brook, MD

Average temperature in July - Stoney Brook, MD
  • Average high temperature in July: 87.3°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in July: 68.7°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

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Average pressure in July
Stoney Brook, MD

Average pressure in July - Stoney Brook, MD
  • Average pressure in July: 29.97"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in July
Stoney Brook, MD

Average wind speed in July - Stoney Brook, MD
  • Average wind speed in July: 5.2mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in July
Stoney Brook, MD

Average humidity in July - Stoney Brook, MD
  • Average humidity in July: 70%

The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in July
Stoney Brook, MD

Average rainfall in July - Stoney Brook, MD
  • Average rainfall in July: 3.23"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").

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Average rainfall days in July
Stoney Brook, MD

Average rainfall days in July - Stoney Brook, MD
  • Average rainfall days in July: 17.5 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall in July
Stoney Brook, MD

Average snowfall in July - Stoney Brook, MD
  • Average snowfall in July: 0"

The months with the highest snowfall are January and March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in July
Stoney Brook, MD

Average snowfall days in July - Stoney Brook, MD
  • Average snowfall days in July: 0 days

The months with the highest number of snowfall days are January and February (5.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in July /
Average sunshine in July
Stoney Brook, MD

Average daylight in July / Average sunshine in July - Stoney Brook, MD
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • 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 December (Average sunshine: 4h and 54min).

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Average sunshine days in July
Stoney Brook, MD

Average sunshine days in July - Stoney Brook, MD
  • Average sunshine days in July: 11 days

The month with the most sunshine days is November (19.5 days).
The months with the least sunshine days are May and July (11 days).

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Average UV index in July
Stoney Brook, MD

Average UV index in July - Stoney Brook, MD
  • Average UV index in July: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).

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Average cloud cover in July
Stoney Brook, MD

Average cloud cover in July - Stoney Brook, MD
  • Average cloud cover in July: 31

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in July
Stoney Brook, MD

Average visibility in July - Stoney Brook, MD
  • Average visibility in July: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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Stoney Brook, Maryland, USA

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