May weather forecast
Dellwood, MD

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Weather in May

The last month of the spring, May, is an agreeable month in Dellwood, Maryland, with an average temperature varying between 71.2°F (21.8°C) and 57.7°F (14.3°C).

Temperature

As May begins, there is an increase in the average high-temperature, moving from a refreshing 62.2°F (16.8°C) in April to an agreeable 71.2°F (21.8°C). In Dellwood, May nights witness a steady temperature drop to a moderate 57.7°F (14.3°C).

Humidity

The most humid month is May, with an average relative humidity of 78%.

Rainfall

In Dellwood, in May, it is raining for 13.8 days, with typically 0.87" (22mm) of accumulated precipitation. In Dellwood, Maryland, during the entire year, the rain falls for 120.4 days and collects up to 10.47" (266mm) of precipitation.

Snowfall

April through October are months without snowfall in Dellwood.

Daylight

In May, the average length of the day is 14h and 19min.
On the first day of May in Dellwood, sunrise is at 6:06 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:25 pm EDT.

Sunshine

In Dellwood, the average sunshine in May is 9h.

UV index

The months with the highest UV index in Dellwood are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 6 during May leads to these advisories:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

What is the usual temperature for Dellwood in May?

In May, the average high-temperature and low-temperature in Dellwood, Maryland, are 71.2°F (21.8°C) and 57.7°F (14.3°C) respectively.

What is the most humid month in Dellwood?

The most humid month in Dellwood is May, with an average relative humidity of 78%.

What is the average humidity in May in Dellwood?

In Dellwood, the average relative humidity in May is 78%.

How much does it rain in Dellwood in May?

In May, in Dellwood, the rain falls for 13.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated.

When it does not snow in Dellwood?

In Dellwood, Maryland, snow does not fall in April through October.

What is the average length of the day in May in Dellwood?

The average day length in May in Dellwood is 14h and 19min.

When is the sunrise / sunset in May in Dellwood?

In May, on the first day of the month, sunrise is at 6:06 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:25 pm EDT.

How many hours of sunshine does Dellwood have in May?

In May, the average sunshine duration in Dellwood is 9h.

What are the months with the highest UV index in Dellwood?

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

How high is the UV index in May in Dellwood?

The average daily maximum UV index in May in Dellwood is 6. A UV Index reading of 6 to 7 represents 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 May
Dellwood, MD

Average temperature in May - Dellwood, MD
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in May: 57.7°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

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Average pressure in May
Dellwood, MD

Average pressure in May - Dellwood, MD
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Dellwood, MD

Average wind speed in May - Dellwood, MD
  • Average wind speed in May: 8mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in May
Dellwood, MD

Average humidity in May - Dellwood, MD
  • Average humidity in May: 78%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).

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Average rainfall in May
Dellwood, MD

Average rainfall in May - Dellwood, MD
  • Average rainfall in May: 0.87"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in May
Dellwood, MD

Average rainfall days in May - Dellwood, MD
  • Average rainfall days in May: 13.8 days

The months with the highest number of rainy days are July and August (14.3 days).
The month with the least rainy days is November (5.3 days).

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Average snowfall in May
Dellwood, MD

Average snowfall in May - Dellwood, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
Dellwood, MD

Average snowfall days in May - Dellwood, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.5 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 May /
Average sunshine in May
Dellwood, MD

Average daylight in May / Average sunshine in May - Dellwood, MD
  • Average daylight in May: 14h and 2min

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 May: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in May
Dellwood, MD

Average sunshine days in May - Dellwood, MD
  • Average sunshine days in May: 14.7 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is August (13.8 days).

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Average UV index in May
Dellwood, MD

Average UV index in May - Dellwood, MD
  • Average UV index in May: 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, February and December (UV index 2).

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Average cloud cover in May
Dellwood, MD

Average cloud cover in May - Dellwood, MD
  • Average cloud cover in May: 41

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in May
Dellwood, MD

Average visibility in May - Dellwood, MD
  • Average visibility in May: 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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Dellwood, Maryland, USA

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