May weather forecast
Fort Washington, MD

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Weather in May

May, the last month of the spring in Fort Washington, is a moderately hot month, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 74.7°F (23.7°C).

Temperature

With the transition into May, Fort Washington experiences an increase in average high-temperatures, moving up from an enjoyable 65.1°F (18.4°C) in April to a moderately hot 74.7°F (23.7°C). May nights experience a consistent temperature drop to a mild 56.8°F (13.8°C).

Humidity

May, October and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

In Fort Washington, Maryland, during May, the rain falls for 17.7 days and regularly aggregates up to 2.95" (75mm) of precipitation. Throughout the year, there are 158.2 rainfall days, and 30.67" (779mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In Fort Washington, the average length of the day in May is 14h and 18min.
On the first day of May, sunrise is at 6:09 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:26 pm EDT.

Sunshine

In Fort Washington, the average sunshine in May is 9h.

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 health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 6 during May translates into these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.

Frequently asked questions

What are May temperatures?

The high-temperature during May is 74.7°F (23.7°C) and the low-temperature is 56.8°F (13.8°C).

What is the most humid month?

The months with the highest humidity are May, October and December, with an average relative humidity of 76%.

What is the average humidity in May?

In Fort Washington, the average relative humidity in May is 76%.

How many days does it rain in May?

In Fort Washington, in May, during 17.7 rainfall days, 2.95" (75mm) of precipitation is typically accumulated.

When it does not snow in Fort Washington?

May through October are months without snowfall.

Does it snow in May?

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

How many hours of daylight does Fort Washington have in May?

In Fort Washington, the average day length in May is 14h and 18min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 6:09 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:26 pm EDT.

How long on average sun shines in May?

The average sunshine duration in May is 9h.

When is the highest UV index?

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?

The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high hazard to health 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 May
Fort Washington, MD

Average temperature in May - Fort Washington, MD
  • Average high temperature in May: 74.7°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in May: 56.8°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

Average pressure in May
Fort Washington, MD

Average pressure in May - Fort Washington, 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).

Average wind speed in May
Fort Washington, MD

Average wind speed in May - Fort Washington, 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 (5mph).

Average humidity in May
Fort Washington, MD

Average humidity in May - Fort Washington, MD
  • Average humidity in May: 76%

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%).

Average rainfall in May
Fort Washington, MD

Average rainfall in May - Fort Washington, MD
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in May
Fort Washington, MD

Average rainfall days in May - Fort Washington, MD
  • Average rainfall days in May: 17.7 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in May
Fort Washington, MD

Average snowfall in May - Fort Washington, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Fort Washington, MD

Average snowfall days in May - Fort Washington, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Fort Washington, MD

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

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 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 6min).

Average sunshine days in May
Fort Washington, MD

Average sunshine days in May - Fort Washington, MD
  • Average sunshine days in May: 11.5 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.5 days).

Average UV index in May
Fort Washington, MD

Average UV index in May - Fort Washington, 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 and December (UV index 2).

Average cloud cover in May
Fort Washington, MD

Average cloud cover in May - Fort Washington, MD
  • Average cloud cover in May: 43

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in May
Fort Washington, MD

Average visibility in May - Fort Washington, 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).

Fort Washington, Maryland, USA

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