July weather forecast
Greenbelt, MD

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Weather in July

The sun-coated days of July extend the gold-studded summer afternoons of June in Greenbelt. The heat of July is the year's peak, with temperatures soaring to 87.4°F (30.8°C). The summer bloom and the brilliant blue sky are both inviting and pleasing to the eye. Despite the reduced sunlight hours from the previous month, July manages to provide the most sunshine in the day, providing ample opportunity for outdoor activities.

Temperature

The month of July sees the highest average temperatures in Greenbelt, Maryland, reaching 87.4°F (30.8°C) at the peak and 70°F (21.1°C) at the low.

Heat index

The heat index value during July is calculated to be a torrid 98.6°F (37°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

April and July, with an average relative humidity of 71%, are the least humid months in Greenbelt.

Rainfall

In Greenbelt, in July, it is raining for 16.8 days, with typically 3.11" (79mm) of accumulated precipitation. In Greenbelt, during the entire year, the rain falls for 157.9 days and collects up to 31.14" (791mm) of precipitation.

Snowfall

In Greenbelt, Maryland, snow does not fall in May through November.

Daylight

In July, the average length of the day is 14h and 35min.
On the first day of July in Greenbelt, Maryland, sunrise is at 5:45 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:19 pm EDT.

Sunshine

With an average of 10.9h of sunshine, July has the most sunshine of the year.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average UV index of 6 in July transforms into this advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What is the warmest month in Greenbelt?

In Greenbelt, the average highest temperatures are observed in July, with a high of 87.4°F (30.8°C) and a low of 70°F (21.1°C).

How hot is July in Greenbelt?

The high-temperature in Greenbelt during July is 87.4°F (30.8°C) and the low-temperature is 70°F (21.1°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 98.6°F (37°C).

What is the least humid month in Greenbelt?

The months with the lowest humidity are April and July, with an average relative humidity of 71%.

What is the average humidity in July in Greenbelt?

The average relative humidity in July in Greenbelt is 71%.

How many days does it rain in July in Greenbelt?

In Greenbelt, Maryland, in July, it is raining for 16.8 days, with typically 3.11" (79mm) of accumulated precipitation.

When it does not snow in Greenbelt?

May through November are months without snowfall in Greenbelt, Maryland.

How many hours of daylight does Greenbelt have in July?

In Greenbelt, the average day length in July is 14h and 35min.

What time are sunrise and sunset in July in Greenbelt?

In July, on the first day of the month, sunrise is at 5:45 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:19 pm EDT.

What month has the most sunshine in Greenbelt?

July has the most sunshine of the year, with an average of 10.9h of sunshine.

How long on average sun shines in July in Greenbelt?

In July, the average sunshine duration in Greenbelt is 10.9h.

When is the highest UV index in Greenbelt?

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

What is the UV index reading in July in Greenbelt?

In Greenbelt, Maryland, the average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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
Greenbelt, MD

Average temperature in July - Greenbelt, MD
  • Average high temperature in July: 87.4°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in July: 70°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in July
Greenbelt, MD

Average pressure in July - Greenbelt, 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 (29.94"Hg).

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Average wind speed in July
Greenbelt, MD

Average wind speed in July - Greenbelt, MD
  • Average wind speed in July: 5.4mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in July
Greenbelt, MD

Average humidity in July - Greenbelt, MD
  • Average humidity in July: 71%

The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).

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Average rainfall in July
Greenbelt, MD

Average rainfall in July - Greenbelt, MD
  • Average rainfall in July: 3.11"

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.01").

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Average rainfall days in July
Greenbelt, MD

Average rainfall days in July - Greenbelt, MD
  • Average rainfall days in July: 16.8 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (9 days).

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Average snowfall in July
Greenbelt, MD

Average snowfall in July - Greenbelt, MD
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in July
Greenbelt, MD

Average snowfall days in July - Greenbelt, MD
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (4.1 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
Greenbelt, MD

Average daylight in July / Average sunshine in July - Greenbelt, 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in July
Greenbelt, MD

Average sunshine days in July - Greenbelt, MD
  • Average sunshine days in July: 12 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in July
Greenbelt, MD

Average UV index in July - Greenbelt, 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 and December (UV index 2).

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Average cloud cover in July
Greenbelt, MD

Average cloud cover in July - Greenbelt, MD
  • Average cloud cover in July: 29

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in July
Greenbelt, MD

Average visibility in July - Greenbelt, MD
  • 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).

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Greenbelt, Maryland, USA

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