May weather forecast
Chartwood, MD

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Weather in May

The last month of the spring, May, is an agreeable month in Chartwood, Maryland, with an average temperature ranging between min 57.2°F (14°C) and max 72.1°F (22.3°C).

Temperature

Chartwood in May sees a temperature change, with average high-temperatures moving from a refreshing 62.8°F (17.1°C) in April to a pleasant 72.1°F (22.3°C). May brings Chartwood a consistent average low-temperature of 57.2°F (14°C).

Humidity

With an average relative humidity of 78%, May is the most humid month in Chartwood.

Rainfall

In Chartwood, in May, during 17.5 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Chartwood, during the entire year, the rain falls for 155.7 days and collects up to 31.22" (793mm) of precipitation.

Snowfall

In Chartwood, snow does not fall in May through October.

Daylight

In Chartwood, the average length of the day in May is 14h and 20min.
On the first day of the month, sunrise is at 6:07 am and sunset at 7:59 pm. On the last day of May, sunrise is at 5:42 am and sunset at 8:26 pm EDT.

Sunshine

The average sunshine in May in Chartwood is 9.1h.

UV index

The months with the highest UV index in Chartwood, Maryland, 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 rays for the ordinary person.
Note: In May, an average UV index of 6 transforms into the following instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Frequently asked questions

What are May temperatures in Chartwood?

During May, Chartwood experiences an average high-temperature of 72.1°F (22.3°C) and a low-temperature of 57.2°F (14°C).

What is the most humid month in Chartwood?

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

What is the average humidity in May in Chartwood?

The average relative humidity in May in Chartwood, Maryland, is 78%.

How much does it rain in Chartwood in May?

In May, in Chartwood, Maryland, the rain falls for 17.5 days. Throughout May, 2.87" (73mm) of precipitation is accumulated.

When it does not snow in Chartwood?

May through October are months without snowfall in Chartwood.

Does it snow in Chartwood in May?

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

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

The average day length in May in Chartwood, Maryland, is 14h and 20min.

What time are sunrise and sunset in May in Chartwood?

In May, on the first day of the month, sunrise is at 6:07 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:26 pm EDT.

How many hours of sunshine does Chartwood have in May?

In May, the average sunshine duration in Chartwood, Maryland, is 9.1h.

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

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

What is the UV index intensity in May in Chartwood?

In Chartwood, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health risk 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
Chartwood, MD

Average temperature in May - Chartwood, MD
  • Average high temperature in May: 72.1°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in May: 57.2°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in May
Chartwood, MD

Average pressure in May - Chartwood, 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 (29.94"Hg).

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Average wind speed in May
Chartwood, MD

Average wind speed in May - Chartwood, MD
  • Average wind speed in May: 7.5mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in May
Chartwood, MD

Average humidity in May - Chartwood, 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
Chartwood, MD

Average rainfall in May - Chartwood, MD
  • Average rainfall in May: 2.87"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in May
Chartwood, MD

Average rainfall days in May - Chartwood, MD
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in May
Chartwood, MD

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

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Chartwood, MD

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

The month with the highest number of snowfall days is January (4.4 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
Chartwood, MD

Average daylight in May / Average sunshine in May - Chartwood, 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 1min

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 6min).

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Average sunshine days in May
Chartwood, MD

Average sunshine days in May - Chartwood, MD
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in May
Chartwood, MD

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

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Average cloud cover in May
Chartwood, MD

Average cloud cover in May - Chartwood, MD
  • Average cloud cover in May: 42

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
Chartwood, MD

Average visibility in May - Chartwood, 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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Chartwood, Maryland, USA

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