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

As Greenbelt, Maryland, transitions into June, a marginal rise in the average high-temperature is observed, moving from 73.9°F (23.3°C) in May to a still moderately hot 81.9°F (27.7°C). The average low-temperature of 64.6°F (18.1°C) is witnessed during June.

Heat index

June's mean heat index is calculated to be a hot 87.8°F (31°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Note that heat index values are valued for light wind and location in the shade. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

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

Rainfall

In Greenbelt, during June, the rain falls for 15.5 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, in Greenbelt, there are 157.9 rainfall days, and 31.14" (791mm) of precipitation is accumulated.

Snowfall

May through November are months without snowfall in Greenbelt.

Daylight

With an average of 14h and 54min of daylight, June has the longest days of the year in Greenbelt.
On the first day of June in Greenbelt, 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 June, the average sunshine in Greenbelt is 10.3h.

UV index

The months with the highest UV index in Greenbelt are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum UV index of 6 in June translates into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

What is the temperature in June in Greenbelt?

In June, the average high-temperature and low-temperature are 81.9°F (27.7°C) and 64.6°F (18.1°C) respectively. In June, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 87.8°F (31°C).

What is the average humidity in June in Greenbelt?

In June, the average relative humidity is 74%.

How many days does it rain in June in Greenbelt?

In Greenbelt, in June, it is raining for 15.5 days, with typically 2.8" (71mm) of accumulated precipitation.

When it does not snow in Greenbelt?

May through November are months without snowfall.

When are the longest days in Greenbelt?

June has the longest days of the year in Greenbelt, Maryland, with an average of 14h and 54min of daylight.

What is the average length of the day in June in Greenbelt?

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

What time are sunrise and sunset in June in Greenbelt?

On the first day of June in Greenbelt, 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.

When is the highest UV index in Greenbelt?

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

How high is the UV index in June in Greenbelt?

In June, the average daily maximum UV index in Greenbelt is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to 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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Greenbelt, Maryland, USA

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