May weather forecast
McHenry, MD

Weather in May

The last month of the spring, May, is a pleasant month in McHenry, Maryland, with average temperature varying between 48.9°F (9.4°C) and 68.5°F (20.3°C).

Temperature

In May, the average high-temperature rises, from a moderate 57.9°F (14.4°C) in April, to an agreeable 68.5°F (20.3°C). In McHenry, the average low-temperature is 48.9°F (9.4°C).

Humidity

In May, the average relative humidity is 81%.

Rainfall

The month with the most rainfall is May when the rain falls for 20.9 days and typically aggregates up to 3.43" (87mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in McHenry. May is the last month it regularly snows. During 0.5 snowfall days, in May, McHenry aggregates 0.94" (24mm) of snow. Throughout the year, in McHenry, there are 48.4 snowfall days, and 26.69" (678mm) of snow is accumulated.

Daylight

In McHenry, the average length of the day in May is 14.4h.

Sunshine

The average sunshine in May is 8.4h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in May in McHenry?

In McHenry, Maryland, the average relative humidity in May is 81%.

What is the rainiest month in McHenry?

The month with the most rainfall in McHenry, Maryland, is May when the rain falls for 20.9 days and typically aggregates up to 3.43" (87mm) of precipitation.

How many days does it rain in May in McHenry?

In McHenry, Maryland, in May, during 20.9 rainfall days, 3.43" (87mm) of precipitation is typically accumulated.

What is the last month it snows in McHenry?

May is the last month it regularly snows in McHenry. During 0.5 snowfall days, in May, McHenry aggregates 0.94" (24mm) of snow.

How many hours of daylight does McHenry have in May?

In McHenry, the average length of the day in May is 14.4h.

How long on average sun shines in May in McHenry?

The average sunshine in May in McHenry is 8.4h.

What are the months with the highest UV index in McHenry?

May through August, with an average maximum UV index of 5, are months with the highest UV index in McHenry.

How high is the UV index in May in McHenry?

In McHenry, Maryland, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in May
McHenry, MD

Average temperature in May - McHenry, MD
  • Average high temperature in May: 68.5°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (32°F).

  • Average low temperature in May: 48.9°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

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Average pressure in May
McHenry, MD

Average pressure in May - McHenry, MD
  • Average pressure in May: 30"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.95").

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Average wind speed in May
McHenry, MD

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

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in May
McHenry, MD

Average humidity in May - McHenry, MD
  • Average humidity in May: 81%

The month with the highest relative humidity is February (87%).
Months with the lowest relative humidity are April, June, July and August (79%).

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Average rainfall in May
McHenry, MD

Average rainfall in May - McHenry, MD
  • Average rainfall in May: 3.43"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is November (1.85").

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Average rainfall days in May
McHenry, MD

Average rainfall days in May - McHenry, MD
  • Average rainfall days in May: 20.9 days

The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in May
McHenry, MD

Average snowfall in May - McHenry, MD
  • Average snowfall in May: 0.94"

The month with the highest snowfall is February (5.28").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
McHenry, MD

Average snowfall days in May - McHenry, MD
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is January (11.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
McHenry, MD

Average daylight in May / Average sunshine in May - McHenry, MD
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in May: 8.4h

The month with the most sunshine is August (Average sunshine: 9.7h).
The month with the least sunshine is January (Average sunshine: 3.1h).

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Average sunshine days in May
McHenry, MD

Average sunshine days in May - McHenry, MD
  • Average sunshine days in May: 8.3 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (8.3 days).

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Average UV index in May
McHenry, MD

Average UV index in May - McHenry, MD
  • Average UV index in May: 5

Months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
McHenry, MD

Average cloud cover in May - McHenry, MD
  • Average cloud cover in May: 50

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 40).

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Average visibility in May
McHenry, MD

Average visibility in May - McHenry, MD
  • Average visibility in May: 5mi

Months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).

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