May weather forecast
Harpers Mill, MD

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Weather in May

The last month of the spring, May, is an agreeable month in Harpers Mill, Maryland, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 72.3°F (22.4°C).

Temperature

May marks a rise in the average high-temperature, moving from April's enjoyable 63.1°F (17.3°C) to a pleasant 72.3°F (22.4°C). In Harpers Mill, May is marked by an average low-temperature of 56.8°F (13.8°C).

Humidity

The most humid month in Harpers Mill is May, with an average relative humidity of 77%.

Rainfall

In Harpers Mill, in May, during 18 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. In Harpers Mill, during the entire year, the rain falls for 157.2 days and collects up to 30.47" (774mm) of precipitation.

Snowfall

April through October are months without snowfall in Harpers Mill.

Daylight

In May, the average length of the day 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, in Harpers Mill, sunrise is at 5:42 am and sunset at 8:26 pm EDT.

Sunshine

The average sunshine in May is 9.2h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 6 in May transforms into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

What is the average May temperature in Harpers Mill?

The high-temperature during May is 72.3°F (22.4°C) and the low-temperature is 56.8°F (13.8°C).

What is the most humid month in Harpers Mill?

May is the most humid month in Harpers Mill, Maryland, with an average relative humidity of 77%.

What is the average humidity in May in Harpers Mill?

In Harpers Mill, Maryland, the average relative humidity in May is 77%.

How many days does it rain in May in Harpers Mill?

In Harpers Mill, in May, it is raining for 18 days, with typically 2.95" (75mm) of accumulated precipitation.

When it does not snow in Harpers Mill?

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

What is the average length of the day in May in Harpers Mill?

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

When are sunrise and sunset in May in Harpers Mill?

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 long on average sun shines in May in Harpers Mill?

In May, the average sunshine duration in Harpers Mill is 9.2h.

What is the month with the highest UV index in Harpers Mill?

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

How high is the UV index in May in Harpers Mill?

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Harpers Mill, MD

Average temperature in May - Harpers Mill, MD
  • Average high temperature in May: 72.3°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in May: 56.8°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).

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Average pressure in May
Harpers Mill, MD

Average pressure in May - Harpers Mill, 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
Harpers Mill, MD

Average wind speed in May - Harpers Mill, MD
  • Average wind speed in May: 7.3mph

The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in May
Harpers Mill, MD

Average humidity in May - Harpers Mill, MD
  • Average humidity in May: 77%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are March, April and July (72%).

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Average rainfall in May
Harpers Mill, MD

Average rainfall in May - Harpers Mill, MD
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.81").

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Average rainfall days in May
Harpers Mill, MD

Average rainfall days in May - Harpers Mill, MD
  • Average rainfall days in May: 18 days

The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and November (8.4 days).

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Average snowfall in May
Harpers Mill, MD

Average snowfall in May - Harpers Mill, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.09").
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
Harpers Mill, MD

Average snowfall days in May - Harpers Mill, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Harpers Mill, MD

Average daylight in May / Average sunshine in May - Harpers Mill, 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
Harpers Mill, MD

Average sunshine days in May - Harpers Mill, MD
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is November (19.9 days).
The months with the least sunshine days are May and July (10.8 days).

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Average UV index in May
Harpers Mill, MD

Average UV index in May - Harpers Mill, 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
Harpers Mill, MD

Average cloud cover in May - Harpers Mill, MD
  • Average cloud cover in May: 42

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in May
Harpers Mill, MD

Average visibility in May - Harpers Mill, 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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Harpers Mill, Maryland, USA

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