May weather forecast
Glenmont, MD

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Weather in May

The last month of the spring, May, is a moderately hot month in Glenmont, Maryland, with an average temperature varying between 73.9°F (23.3°C) and 55.8°F (13.2°C).

Temperature

The start of May brings a rise in the average high-temperature, moving from an enjoyable 64.2°F (17.9°C) in April to a moderately hot 73.9°F (23.3°C). Glenmont's temperature tends to fall to an average low of 55.8°F (13.2°C) during the nights of May.

Humidity

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

Rainfall

In Glenmont, during May, the rain falls for 17.8 days and regularly aggregates up to 3.23" (82mm) of precipitation. Throughout the year, there are 160.9 rainfall days, and 32.99" (838mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Glenmont, the average length of the day in May is 14h and 20min.
On the first day of May, sunrise is at 6:08 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:27 pm EDT.

Sunshine

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 threat to health from unsafe exposure to UV radiation for average individuals.
Note: In May, the UV index of 6 transforms into the following advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

An average high-temperature, in May, in Glenmont, is 73.9°F (23.3°C) and the average low-temperature is 55.8°F (13.2°C).

What are the most humid months?

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 May, the average relative humidity is 76%.

How many days does it rain in May?

In Glenmont, in May, during 17.8 rainfall days, 3.23" (82mm) of precipitation is typically accumulated.

When it does not snow?

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 Glenmont have in May?

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

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:08 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:27 pm EDT.

How many hours of sunshine does Glenmont have in May?

In Glenmont, the average sunshine duration in May is 8.8h.

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 reading 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
Glenmont, MD

Average temperature in May - Glenmont, MD
  • Average high temperature in May: 73.9°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in May: 55.8°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in May
Glenmont, MD

Average pressure in May - Glenmont, 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
Glenmont, MD

Average wind speed in May - Glenmont, MD
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in May
Glenmont, MD

Average humidity in May - Glenmont, MD
  • Average humidity in May: 76%

The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).

Average rainfall in May
Glenmont, MD

Average rainfall in May - Glenmont, MD
  • Average rainfall in May: 3.23"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days in May
Glenmont, MD

Average rainfall days in May - Glenmont, MD
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in May
Glenmont, MD

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

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

Average snowfall days in May
Glenmont, MD

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

The months with the highest number of snowfall days are January and February (5.1 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
Glenmont, MD

Average daylight in May / Average sunshine in May - Glenmont, 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).

Average sunshine days in May
Glenmont, MD

Average sunshine days in May - Glenmont, MD
  • Average sunshine days in May: 11 days

The month with the most sunshine days is November (19.4 days).
The months with the least sunshine days are May and July (11 days).

Average UV index in May
Glenmont, MD

Average UV index in May - Glenmont, 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).

Average cloud cover in May
Glenmont, MD

Average cloud cover in May - Glenmont, 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).

Average visibility in May
Glenmont, MD

Average visibility in May - Glenmont, 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).

Glenmont, Maryland, USA

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