May weather forecast
North Potomac, MD

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Weather in May

May, the last month of the spring in North Potomac, is a moderately hot month, with temperature in the range of an average high of 74.3°F (23.5°C) and an average low of 55.6°F (13.1°C).

Temperature

The beginning of May marks a shift in the average high-temperature, moving from April's comfortable 64.9°F (18.3°C) to a warm 74.3°F (23.5°C). During the month of May, the nighttime temperature falls to an average of 55.6°F (13.1°C).

Humidity

The average relative humidity in May is 75%.

Rainfall

In North Potomac, Maryland, during May, the rain falls for 17.1 days and regularly aggregates up to 3.19" (81mm) of precipitation. In North Potomac, during the entire year, the rain falls for 156.5 days and collects up to 30.71" (780mm) of precipitation.

Snowfall

In North Potomac, snow does not fall in May through October.

Daylight

The average length of the day in May in North Potomac is 14h and 20min.
On the first day of the month, sunrise is at 6:09 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:28 pm EDT.

Sunshine

In North Potomac, the average sunshine in May is 8.8h.

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 vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What is the average May temperature in North Potomac?

The average high-temperature and low-temperature in North Potomac, Maryland, during May are 74.3°F (23.5°C) and 55.6°F (13.1°C) respectively.

What is the average humidity in May in North Potomac?

The average relative humidity in May in North Potomac is 75%.

How many days does it rain in May in North Potomac?

In North Potomac, Maryland, in May, during 17.1 rainfall days, 3.19" (81mm) of precipitation is typically accumulated.

When it does not snow in North Potomac?

In North Potomac, snow does not fall in May through October.

Does it snow in North Potomac in May?

In May, in North Potomac, Maryland, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does North Potomac have in May?

In North Potomac, Maryland, the average day length in May is 14h and 20min.

What time are sunrise and sunset in May in North Potomac?

On the first day of May, sunrise is at 6:09 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:28 pm EDT.

How many hours of sunshine does North Potomac have in May?

The average sunshine duration in May in North Potomac, Maryland, is 8.8h.

What is the month with the highest UV index in North Potomac?

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

What is the UV index intensity in May in North Potomac?

The average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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 May
North Potomac, MD

Average temperature in May - North Potomac, MD
  • Average high temperature in May: 74.3°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 (39.4°F).

  • Average low temperature in May: 55.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

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Average pressure in May
North Potomac, MD

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

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in May
North Potomac, MD

Average wind speed in May - North Potomac, MD
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in May
North Potomac, MD

Average humidity in May - North Potomac, MD
  • Average humidity in May: 75%

The months with the highest relative humidity are October and December (76%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in May
North Potomac, MD

Average rainfall in May - North Potomac, MD
  • Average rainfall in May: 3.19"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is February (1.93").

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Average rainfall days in May
North Potomac, MD

Average rainfall days in May - North Potomac, MD
  • Average rainfall days in May: 17.1 days

The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in May
North Potomac, MD

Average snowfall in May - North Potomac, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
North Potomac, MD

Average snowfall days in May - North Potomac, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (4.8 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
North Potomac, MD

Average daylight in May / Average sunshine in May - North Potomac, 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: 8h and 5min

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
North Potomac, MD

Average sunshine days in May - North Potomac, MD
  • Average sunshine days in May: 11.7 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (11.7 days).

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Average UV index in May
North Potomac, MD

Average UV index in May - North Potomac, 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, November and December (UV index 2).

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Average cloud cover in May
North Potomac, MD

Average cloud cover in May - North Potomac, MD
  • Average cloud cover in May: 44

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in May
North Potomac, MD

Average visibility in May - North Potomac, MD
  • Average visibility in May: 5mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

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North Potomac, Maryland, USA

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