May weather forecast
O'Donnell, MD

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Weather in May

The last month of the spring, May, is a pleasant month in O'Donnell, Maryland, with an average temperature varying between 72.5°F (22.5°C) and 55.4°F (13°C).

Temperature

May brings a temperature increase, with average high-temperatures moving from April's comfortable 63.1°F (17.3°C) to a pleasant 72.5°F (22.5°C). The nighttime temperature dips to a mild 55.4°F (13°C) on average during May.

Humidity

With an average relative humidity of 77%, May is the most humid month in O'Donnell.

Rainfall

In O'Donnell, in May, during 17.8 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. Throughout the year, there are 157.1 rainfall days, and 29.02" (737mm) of precipitation is accumulated.

Snowfall

In O'Donnell, Maryland, snow does not fall in April through October.

Daylight

In May, the average length of the day in O'Donnell is 14h and 20min.
On the first day of the month, sunrise is at 6:07 am and sunset at 8:01 pm. On the last day of May, sunrise is at 5:42 am and sunset at 8:27 pm EDT.

Sunshine

The average sunshine in May in O'Donnell is 8.9h.

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 threat to health from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 6 in May interprets into the following advice:
Shield from overexposure. Defense against sun-related harm is required. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What is the temperature in May in O'Donnell?

During May, O'Donnell experiences an average high-temperature of 72.5°F (22.5°C) and a low-temperature of 55.4°F (13°C).

What is the most humid month in O'Donnell?

May is the most humid month in O'Donnell, with an average relative humidity of 77%.

What is the average humidity in May in O'Donnell?

In O'Donnell, Maryland, the average relative humidity in May is 77%.

How many days does it rain in May in O'Donnell?

In May, in O'Donnell, Maryland, the rain falls for 17.8 days. Throughout May, 3.11" (79mm) of precipitation is accumulated.

When it does not snow in O'Donnell?

April through October are months without snowfall in O'Donnell, Maryland.

What is the average length of the day in May in O'Donnell?

In O'Donnell, the average day length in May is 14h and 20min.

When are sunrise and sunset in May in O'Donnell?

In May, on the first day of the month, sunrise is at 6:07 am and sunset at 8:01 pm. On the last day of the month, in O'Donnell, sunrise is at 5:42 am and sunset at 8:27 pm EDT.

How long on average sun shines in May in O'Donnell?

In O'Donnell, Maryland, the average sunshine duration in May is 8.9h.

When is the highest UV index in O'Donnell?

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

How high is the UV index in May in O'Donnell?

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health threat 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
O'Donnell, MD

Average temperature in May - O
  • Average high temperature in May: 72.5°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in May: 55.4°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

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Average pressure in May
O'Donnell, MD

Average pressure in May - O
  • 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 (29.94"Hg).

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Average wind speed in May
O'Donnell, MD

Average wind speed in May - O
  • Average wind speed in May: 6.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in May
O'Donnell, MD

Average humidity in May - O
  • Average humidity in May: 77%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April and July (72%).

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Average rainfall in May
O'Donnell, MD

Average rainfall in May - O
  • Average rainfall in May: 3.11"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is November (1.22").

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Average rainfall days in May
O'Donnell, MD

Average rainfall days in May - O
  • 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 January (8.4 days).

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Average snowfall in May
O'Donnell, MD

Average snowfall in May - O
  • Average snowfall in May: 0"

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

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Average snowfall days in May
O'Donnell, MD

Average snowfall days in May - O
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
O'Donnell, MD

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

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Average sunshine days in May
O'Donnell, MD

Average sunshine days in May - O
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (11.1 days).

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Average UV index in May
O'Donnell, MD

Average UV index in May - O
  • 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, November and December (UV index 2).

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Average cloud cover in May
O'Donnell, MD

Average cloud cover in May - O
  • 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).

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Average visibility in May
O'Donnell, MD

Average visibility in May - O
  • 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).

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O'Donnell, Maryland, USA

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