June weather forecast
Greenbelt, MD

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Weather in June

June marks the arrival of summertime in Greenbelt. Days are longest in June, with daylight stretching up to 14.9 hours, and average temperatures hovering between 64.6°F (18.1°C) and 81.9°F (27.7°C). Evenings serve as a pleasant relief after the gradual daytime heat. Preparing for July, the warmest month, residents are seen reveling outdoors in the late evening sunshine, appreciating the balmy nights before the intense summer heat sets in.

Temperature

A slight uplift of average high-temperatures is noted in June, with temperatures adjusting from a moderately hot 73.9°F (23.3°C) in May to a still warm 81.9°F (27.7°C). Throughout June, Greenbelt's nights cool down to an average of 64.6°F (18.1°C).

Heat index

June's average heat index is computed to be a hot 87.8°F (31°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

In Greenbelt, the average relative humidity in June is 74%.

Rainfall

In Greenbelt, in June, during 15.5 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, there are 157.9 rainfall days, and 31.14" (791mm) of precipitation is accumulated.

Snowfall

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

Daylight

June has the longest days of the year, with an average of 14h and 54min of daylight.
On the first day of June, sunrise is at 5:43 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:37 pm EDT.

Sunshine

In Greenbelt, the average sunshine in June is 10.3h.

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 vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In June, a regular UV index of 6 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Frequently asked questions

What is the usual temperature for Greenbelt in June?

In Greenbelt, 81.9°F (27.7°C) is the average high-temperature and 64.6°F (18.1°C) is the average low-temperature during June. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in June is computed to be 87.8°F (31°C).

What is the average humidity in June?

The average relative humidity in June is 74%.

How much does it rain in June?

In June, the rain falls for 15.5 days. Throughout June, 2.8" (71mm) of precipitation is accumulated.

When it does not snow in Greenbelt?

May through November are months without snowfall in Greenbelt.

When are the longest days?

With an average of 14h and 54min of daylight, June has the longest days of the year.

What is the average length of the day in June?

In Greenbelt, the average day length in June is 14h and 52min.

When is the sunrise / sunset in June?

In June, on the first day of the month, sunrise is at 5:43 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:37 pm EDT.

How many hours of sunshine does Greenbelt have in June?

In June, the average sunshine duration is 10.3h.

What is the month with the highest UV index?

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

What is the UV index intensity in June?

In June, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
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
Greenbelt, MD

Average temperature in June - Greenbelt, MD
  • Average high temperature in June: 81.9°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 June: 64.6°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).

Average pressure in June
Greenbelt, MD

Average pressure in June - Greenbelt, MD
  • Average pressure in June: 29.94"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).

Average wind speed in June
Greenbelt, MD

Average wind speed in June - Greenbelt, MD
  • Average wind speed in June: 6.2mph

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).

Average humidity in June
Greenbelt, MD

Average humidity in June - Greenbelt, MD
  • Average humidity in June: 74%

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%).

Average rainfall in June
Greenbelt, MD

Average rainfall in June - Greenbelt, MD
  • Average rainfall in June: 2.8"

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

Average rainfall days in June
Greenbelt, MD

Average rainfall days in June - Greenbelt, MD
  • Average rainfall days in June: 15.5 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).

Average snowfall in June
Greenbelt, MD

Average snowfall in June - Greenbelt, MD
  • Average snowfall in June: 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").

Average snowfall days in June
Greenbelt, MD

Average snowfall days in June - Greenbelt, MD
  • Average snowfall days in June: 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).

Average daylight in June /
Average sunshine in June
Greenbelt, MD

Average daylight in June / Average sunshine in June - Greenbelt, MD
  • Average daylight in June: 14h and 5min

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 June: 10h and 2min

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).

Average sunshine days in June
Greenbelt, MD

Average sunshine days in June - Greenbelt, MD
  • Average sunshine days in June: 13 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).

Average UV index in June
Greenbelt, MD

Average UV index in June - Greenbelt, MD
  • Average UV index in June: 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).

Average cloud cover in June
Greenbelt, MD

Average cloud cover in June - Greenbelt, MD
  • Average cloud cover in June: 33

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

Average visibility in June
Greenbelt, MD

Average visibility in June - Greenbelt, MD
  • 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).

Greenbelt, Maryland, USA

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