May weather forecast
Glen Isle, MD

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Weather in May

May, the last month of the spring in Glen Isle, is a pleasant month, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 71.2°F (21.8°C).

Temperature

In Glen Isle, the average high-temperature in May rises, from a refreshing 62.2°F (16.8°C) in April, to an agreeable 71.2°F (21.8°C). Glen Isle's average low-temperature is measured at a refreshing 57.7°F (14.3°C) during May.

Humidity

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

Rainfall

In May, the rain falls for 13.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated. In Glen Isle, during the entire year, the rain falls for 120.4 days and collects up to 10.47" (266mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in May is 14h and 19min.
On the first day of May, 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 8:25 pm EDT.

Sunshine

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 value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, an average UV index of 6 transforms into the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

In May, in Glen Isle, the average high-temperature is 71.2°F (21.8°C), and the average low-temperature is 57.7°F (14.3°C).

What is the most humid month?

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

What is the average humidity in May?

The average relative humidity in May is 78%.

How much does it rain in May?

In Glen Isle, Maryland, in May, it is raining for 13.8 days, with typically 0.87" (22mm) of accumulated precipitation.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in May?

In Glen Isle, Maryland, the average day length in May is 14h and 19min.

What time are sunrise and sunset in May?

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 8:25 pm EDT.

How many hours of sunshine does Glen Isle have in May?

In May, the average sunshine duration is 9h.

When is the highest UV index?

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

What is the UV index intensity in May?

In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes 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
Glen Isle, MD

Average temperature in May - Glen Isle, 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).

Average pressure in May
Glen Isle, MD

Average pressure in May - Glen Isle, 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).

Average wind speed in May
Glen Isle, MD

Average wind speed in May - Glen Isle, 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).

Average humidity in May
Glen Isle, MD

Average humidity in May - Glen Isle, 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%).

Average rainfall in May
Glen Isle, MD

Average rainfall in May - Glen Isle, 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").

Average rainfall days in May
Glen Isle, MD

Average rainfall days in May - Glen Isle, 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).

Average snowfall in May
Glen Isle, MD

Average snowfall in May - Glen Isle, 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").

Average snowfall days in May
Glen Isle, MD

Average snowfall days in May - Glen Isle, 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).

Average daylight in May /
Average sunshine in May
Glen Isle, MD

Average daylight in May / Average sunshine in May - Glen Isle, 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).

Average sunshine days in May
Glen Isle, MD

Average sunshine days in May - Glen Isle, 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).

Average UV index in May
Glen Isle, MD

Average UV index in May - Glen Isle, 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).

Average cloud cover in May
Glen Isle, MD

Average cloud cover in May - Glen Isle, 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).

Average visibility in May
Glen Isle, MD

Average visibility in May - Glen Isle, 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).

Glen Isle, Maryland, USA

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