May weather forecast
Stephen Knolls, MD

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Weather in May

The last month of the spring, May, is a moderately hot month in Stephen Knolls, Maryland, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 74.3°F (23.5°C).

Temperature

In May, the average high-temperature increases from a comfortable 64.9°F (18.3°C) in April to a warm 74.3°F (23.5°C). In May, Stephen Knolls experiences a temperature dip to an average of 56.5°F (13.6°C) at night.

Humidity

The months with the highest humidity are May, October and December, with an average relative humidity of 75%.

Rainfall

In Stephen Knolls, during May, the rain falls for 17.7 days and regularly aggregates up to 2.87" (73mm) of precipitation. In Stephen Knolls, during the entire year, the rain falls for 154.8 days and collects up to 30.28" (769mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Stephen Knolls, the average length of the day in May is 14h and 20min.
On the first day of May, sunrise is at 6:09 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 8.6h.

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 risk from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 6 during May translates into these guidelines:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

What are the temperatures in Stephen Knolls in May?

An average high-temperature, in May, in Stephen Knolls, is 74.3°F (23.5°C) and the average low-temperature is 56.5°F (13.6°C).

What are the most humid months?

May, October and December, with an average relative humidity of 75%, are most humid months in Stephen Knolls.

What is the average humidity in May?

In May, the average relative humidity is 75%.

How many days does it rain in May?

In Stephen Knolls, Maryland, during May, the rain falls for 17.7 days and regularly aggregates up to 2.87" (73mm) of precipitation.

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 Stephen Knolls have in May?

In May, the average day length is 14h and 20min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:09 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 Stephen Knolls have in May?

The average sunshine duration in May is 8.6h.

When is the highest UV index in Stephen Knolls?

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

What is the UV index reading in May?

In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe 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
Stephen Knolls, MD

Average temperature in May - Stephen Knolls, MD
  • Average high temperature in May: 74.3°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in May: 56.5°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).

Average pressure in May
Stephen Knolls, MD

Average pressure in May - Stephen Knolls, 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
Stephen Knolls, MD

Average wind speed in May - Stephen Knolls, MD
  • Average wind speed in May: 6.6mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in May
Stephen Knolls, MD

Average humidity in May - Stephen Knolls, MD
  • Average humidity in May: 75%

The months with the highest relative humidity are May, October and December (75%).
The month with the lowest relative humidity is July (69%).

Average rainfall in May
Stephen Knolls, MD

Average rainfall in May - Stephen Knolls, MD
  • Average rainfall in May: 2.87"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.89").

Average rainfall days in May
Stephen Knolls, MD

Average rainfall days in May - Stephen Knolls, MD
  • Average rainfall days in May: 17.7 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in May
Stephen Knolls, MD

Average snowfall in May - Stephen Knolls, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Stephen Knolls, MD

Average snowfall days in May - Stephen Knolls, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (4.6 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
Stephen Knolls, MD

Average daylight in May / Average sunshine in May - Stephen Knolls, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in May
Stephen Knolls, MD

Average sunshine days in May - Stephen Knolls, MD
  • Average sunshine days in May: 12 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12 days).

Average UV index in May
Stephen Knolls, MD

Average UV index in May - Stephen Knolls, 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
Stephen Knolls, MD

Average cloud cover in May - Stephen Knolls, MD
  • Average cloud cover in May: 45

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in May
Stephen Knolls, MD

Average visibility in May - Stephen Knolls, 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).

Stephen Knolls, Maryland, USA

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