May weather forecast
South River Heights, MD

Share

Weather in May

The last month of the spring, May, is a pleasant month in South River Heights, Maryland, with an average temperature varying between 71.2°F (21.8°C) and 57.7°F (14.3°C).

Temperature

With the onset of May, South River Heights experiences a temperature shift, with the average high-temperature moving from a comfortable 62.2°F (16.8°C) in April to an agreeable 71.2°F (21.8°C). Nighttime temperatures consistently average a refreshing 57.7°F (14.3°C) during May.

Humidity

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

Rainfall

In South River Heights, in May, it is raining for 13.8 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 120.4 rainfall days, and 10.47" (266mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

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 in South River Heights 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 estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In May, the UV index of 6 transforms into the following advice:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.

Frequently asked questions

What is the temperature in May?

An average high-temperature, in May, in South River Heights, 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?

In South River Heights, the average relative humidity in May is 78%.

How many days does it rain in May?

In May, the rain falls for 13.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated.

When it does not snow?

In South River Heights, snow does not fall in April through October.

How many hours of daylight does South River Heights have in May?

In South River Heights, the average day length in May is 14h and 19min.

When 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 South River Heights have in May?

The average sunshine duration in May is 9h.

What are the months with the highest UV index?

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

How high is the UV index in May?

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
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
South River Heights, MD

Average temperature in May - South River Heights, 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
South River Heights, MD

Average pressure in May - South River Heights, 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
South River Heights, MD

Average wind speed in May - South River Heights, 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
South River Heights, MD

Average humidity in May - South River Heights, 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
South River Heights, MD

Average rainfall in May - South River Heights, 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
South River Heights, MD

Average rainfall days in May - South River Heights, 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
South River Heights, MD

Average snowfall in May - South River Heights, 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
South River Heights, MD

Average snowfall days in May - South River Heights, 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
South River Heights, MD

Average daylight in May / Average sunshine in May - South River Heights, 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
South River Heights, MD

Average sunshine days in May - South River Heights, 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
South River Heights, MD

Average UV index in May - South River Heights, 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
South River Heights, MD

Average cloud cover in May - South River Heights, 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
South River Heights, MD

Average visibility in May - South River Heights, 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).

South River Heights, Maryland, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location