June weather forecast
Riverdale Heights, MD

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Weather in June

The first month of the summer, June, is also a moderately hot month in Riverdale Heights, Maryland, with an average temperature fluctuating between 81.9°F (27.7°C) and 64.6°F (18.1°C).

Temperature

June's arrival coincides with a subtle temperature rise, moving from May's warm 73.9°F (23.3°C) to a still moderately hot 81.9°F (27.7°C). Throughout the month of June, Riverdale Heights witnesses an average temperature of 64.6°F (18.1°C).

Heat index

June's heat index is calculated to be a hot 87.8°F (31°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

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

Rainfall

In Riverdale Heights, in June, it is raining for 15.5 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 157.9 rainfall days, and 31.14" (791mm) of precipitation is accumulated.

Snowfall

In Riverdale Heights, snow does not fall in May through November.

Daylight

The month with the longest days is June, 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 Riverdale Heights, the average sunshine in June is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 6 during June translates into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

What is the temperature in June in Riverdale Heights?

The high-temperature in Riverdale Heights, Maryland, during June is 81.9°F (27.7°C) and the low-temperature is 64.6°F (18.1°C). In June, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 87.8°F (31°C).

What is the average humidity in June in Riverdale Heights?

The average relative humidity in June in Riverdale Heights, Maryland, is 74%.

How much does it rain in Riverdale Heights in June?

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

When it does not snow in Riverdale Heights?

May through November are months without snowfall in Riverdale Heights, Maryland.

When are the longest days in Riverdale Heights?

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

What is the average length of the day in June in Riverdale Heights?

In June, the average day length in Riverdale Heights, Maryland, is 14h and 52min.

When are sunrise and sunset in June in Riverdale Heights?

On the first day of June in Riverdale Heights, Maryland, 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 long on average sun shines in June in Riverdale Heights?

In June, the average sunshine duration is 10.3h.

What is the month with the highest UV index in Riverdale Heights?

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

What is the UV index reading in June in Riverdale Heights?

The average daily maximum UV index in June is 6. A UV Index reading of 6 to 7 represents a high health threat from 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
Riverdale Heights, MD

Average temperature in June - Riverdale Heights, 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
Riverdale Heights, MD

Average pressure in June - Riverdale Heights, 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
Riverdale Heights, MD

Average wind speed in June - Riverdale Heights, 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
Riverdale Heights, MD

Average humidity in June - Riverdale Heights, 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
Riverdale Heights, MD

Average rainfall in June - Riverdale Heights, 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
Riverdale Heights, MD

Average rainfall days in June - Riverdale Heights, 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
Riverdale Heights, MD

Average snowfall in June - Riverdale Heights, 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
Riverdale Heights, MD

Average snowfall days in June - Riverdale Heights, 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
Riverdale Heights, MD

Average daylight in June / Average sunshine in June - Riverdale Heights, 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
Riverdale Heights, MD

Average sunshine days in June - Riverdale Heights, 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
Riverdale Heights, MD

Average UV index in June - Riverdale Heights, 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
Riverdale Heights, MD

Average cloud cover in June - Riverdale Heights, 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
Riverdale Heights, MD

Average visibility in June - Riverdale Heights, 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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Riverdale Heights, Maryland, USA

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