June weather forecast
Upper Marlboro, MD

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Weather in June

The first month of the summer, June, is also a moderately hot month in Upper Marlboro, Maryland, with an average temperature fluctuating between 64.9°F (18.3°C) and 81.5°F (27.5°C).

Temperature

With the transition into June, Upper Marlboro experiences a subtle uplift in average high-temperatures, adjusting from 73.6°F (23.1°C) in May to a still moderately hot 81.5°F (27.5°C). During June, Upper Marlboro witnesses a consistent average low-temperature of 64.9°F (18.3°C).

Heat index

During June, the heat index is evaluated at a hot 86°F (30°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In Upper Marlboro, Maryland, the average relative humidity in June is 75%.

Rainfall

In Upper Marlboro, in June, during 15.8 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Upper Marlboro, Maryland, during the entire year, the rain falls for 164.8 days and collects up to 32.87" (835mm) of precipitation.

Snowfall

In Upper Marlboro, snow does not fall in May through October.

Daylight

With an average of 14h and 48min of daylight, June has the longest days of the year in Upper Marlboro.
On the first day of the month, sunrise is at 5:43 am and sunset at 8:26 pm. On the last day of June, in Upper Marlboro, Maryland, sunrise is at 5:45 am and sunset at 8:36 pm EDT.

Sunshine

The average sunshine in June is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In June, the maximum UV index of 6 suggests these recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What is the average June temperature in Upper Marlboro?

Upper Marlboro in June has an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.9°F (18.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in June is evaluated at 86°F (30°C).

What is the average humidity in June in Upper Marlboro?

In June, the average relative humidity in Upper Marlboro is 75%.

How much does it rain in Upper Marlboro in June?

In June, in Upper Marlboro, Maryland, the rain falls for 15.8 days. Throughout June, 2.91" (74mm) of precipitation is accumulated.

When it does not snow in Upper Marlboro?

In Upper Marlboro, snow does not fall in May through October.

When are the longest days in Upper Marlboro?

The month with the longest days is June, with an average of 14h and 48min of daylight.

What is the average length of the day in June in Upper Marlboro?

In Upper Marlboro, Maryland, the average day length in June is 14h and 50min.

What time are sunrise and sunset in June in Upper Marlboro?

In June, on the first day of the month, sunrise is at 5:43 am and sunset at 8:26 pm. On the last day of the month, in Upper Marlboro, sunrise is at 5:45 am and sunset at 8:36 pm EDT.

How many hours of sunshine does Upper Marlboro have in June?

The average sunshine duration in June is 10.4h.

When is the highest UV index in Upper Marlboro?

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

What is the UV index reading in June in Upper Marlboro?

The average daily maximum UV index in June in Upper Marlboro is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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 June
Upper Marlboro, MD

Average temperature in June - Upper Marlboro, MD
  • Average high temperature in June: 81.5°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in June: 64.9°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).

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Average pressure in June
Upper Marlboro, MD

Average pressure in June - Upper Marlboro, 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
Upper Marlboro, MD

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

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).

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Average humidity in June
Upper Marlboro, MD

Average humidity in June - Upper Marlboro, MD
  • Average humidity in June: 75%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are January, March and April (72%).

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Average rainfall in June
Upper Marlboro, MD

Average rainfall in June - Upper Marlboro, MD
  • Average rainfall in June: 2.91"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in June
Upper Marlboro, MD

Average rainfall days in June - Upper Marlboro, MD
  • Average rainfall days in June: 15.8 days

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

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Average snowfall in June
Upper Marlboro, MD

Average snowfall in June - Upper Marlboro, MD
  • Average snowfall in June: 0"

The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in June
Upper Marlboro, MD

Average snowfall days in June - Upper Marlboro, MD
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is January (4.6 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
Upper Marlboro, MD

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

The month with the longest days is June (Average daylight: 14h and 48min).
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: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

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Average sunshine days in June
Upper Marlboro, MD

Average sunshine days in June - Upper Marlboro, MD
  • Average sunshine days in June: 11.6 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in June
Upper Marlboro, MD

Average UV index in June - Upper Marlboro, 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, November and December (UV index 2).

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Average cloud cover in June
Upper Marlboro, MD

Average cloud cover in June - Upper Marlboro, MD
  • Average cloud cover in June: 31

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in June
Upper Marlboro, MD

Average visibility in June - Upper Marlboro, 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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Upper Marlboro, Maryland, USA

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