May weather forecast
Green Valley, MD

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Weather in May

The last month of the spring, May, is a moderately hot month in Green Valley, Maryland, with an average temperature fluctuating between 57°F (13.9°C) and 74.5°F (23.6°C).

Temperature

May's onset brings a rise in the average high-temperature, moving from a comfortable 65.1°F (18.4°C) in April to a warm 74.5°F (23.6°C). Green Valley records an average nighttime low-temperature of 57°F (13.9°C) throughout May.

Humidity

May is the most humid month in Green Valley, with an average relative humidity of 76%.

Rainfall

In Green Valley, in May, it is raining for 16.3 days, with typically 2.64" (67mm) of accumulated precipitation. In Green Valley, during the entire year, the rain falls for 149.1 days and collects up to 26.14" (664mm) of precipitation.

Snowfall

In Green Valley, snow does not fall in April through November.

Daylight

The average length of the day in May is 14h and 21min.
On the first day of the month, sunrise is at 6:09 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:29 pm EDT.

Sunshine

The average sunshine in May is 8.9h.

UV index

In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 in May translates into these instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Boost your sun resistance with garments that are densely woven yet spacious.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

The high-temperature, in May, in Green Valley, is 74.5°F (23.6°C), while the low-temperature averages to 57°F (13.9°C).

What is the most humid month?

With an average relative humidity of 76%, May is the most humid month in Green Valley.

What is the average humidity in May?

The average relative humidity in May is 76%.

How many days does it rain in May?

In Green Valley, in May, it is raining for 16.3 days, with typically 2.64" (67mm) of accumulated precipitation.

When it does not snow?

April through November are months without snowfall.

How many hours of daylight does Green Valley have in May?

The average day length in May is 14h and 21min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:09 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:29 pm EDT.

How long on average sun shines in May?

In Green Valley, the average sunshine duration in May is 8.9h.

What is the UV index intensity in May?

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

Average temperature in May - Green Valley, MD
  • Average high temperature in May: 74.5°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in May: 57°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 (27.5°F).

Average pressure in May
Green Valley, MD

Average pressure in May - Green Valley, 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
Green Valley, MD

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

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in May
Green Valley, MD

Average humidity in May - Green Valley, MD
  • Average humidity in May: 76%

The month with the highest relative humidity is May (76%).
The months with the lowest relative humidity are April and July (71%).

Average rainfall in May
Green Valley, MD

Average rainfall in May - Green Valley, MD
  • Average rainfall in May: 2.64"

The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.57").

Average rainfall days in May
Green Valley, MD

Average rainfall days in May - Green Valley, MD
  • Average rainfall days in May: 16.3 days

The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is November (8.1 days).

Average snowfall in May
Green Valley, MD

Average snowfall in May - Green Valley, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.17").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in May
Green Valley, MD

Average snowfall days in May - Green Valley, MD
  • Average snowfall days in May: 0 days

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

Average daylight in May /
Average sunshine in May
Green Valley, MD

Average daylight in May / Average sunshine in May - Green Valley, 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 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).

Average sunshine days in May
Green Valley, MD

Average sunshine days in May - Green Valley, MD
  • Average sunshine days in May: 12.8 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.8 days).

Average UV index in May
Green Valley, MD

Average UV index in May - Green Valley, MD
  • Average UV index in May: 6

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in May
Green Valley, MD

Average cloud cover in May - Green Valley, 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
Green Valley, MD

Average visibility in May - Green Valley, 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).

Green Valley, Maryland, USA

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