May weather forecast
Dallas, PA

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Weather in May

May, the last month of the spring in Dallas, is a comfortable month, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 67.5°F (19.7°C).

Temperature

May brings a temperature change, with average high-temperatures moving from April's fresh 55°F (12.8°C) to a comfortable 67.5°F (19.7°C). Dallas experiences an average temperature drop to a frosty 48°F (8.9°C) during May nights.

Humidity

In May, the average relative humidity in Dallas, Pennsylvania, is 79%.

Rainfall

In Dallas, Pennsylvania, in May, during 17.8 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, in Dallas, there are 154.5 rainfall days, and 25.63" (651mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, Dallas aggregates 0.39" (10mm) of snow. Throughout the year, in Dallas, there are 58.2 snowfall days, and 26.1" (663mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 31min.
On the first day of May, sunrise is at 6:00 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:30 pm EDT.

Sunshine

In May, the average sunshine in Dallas, Pennsylvania, is 8.1h.

UV index

The months with the highest UV index in Dallas are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 5 translates into these guidelines:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What are the temperatures in Dallas in May?

During May, Dallas experiences an average high-temperature of 67.5°F (19.7°C) and a low-temperature of 48°F (8.9°C).

What is the average humidity in May in Dallas?

The average relative humidity in May in Dallas, Pennsylvania, is 79%.

How much does it rain in Dallas in May?

In Dallas, in May, it is raining for 17.8 days, with typically 2.4" (61mm) of accumulated precipitation.

What is the last month it snows in Dallas?

May is the last month it regularly snows in Dallas. During 0.4 snowfall days, in May, Dallas aggregates 0.39" (10mm) of snow.

How many hours of daylight does Dallas have in May?

In May, the average day length in Dallas, Pennsylvania, is 14h and 31min.

When is the sunrise / sunset in May in Dallas?

On the first day of May, sunrise is at 6:00 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:30 pm EDT.

How many hours of sunshine does Dallas have in May?

The average sunshine duration in May in Dallas, Pennsylvania, is 8.1h.

When is the highest UV index in Dallas?

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

What is the UV index intensity in May in Dallas?

The average daily maximum UV index in May in Dallas is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Dallas, PA

Average temperature in May - Dallas, PA
  • Average high temperature in May: 67.5°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in May: 48°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in May
Dallas, PA

Average pressure in May - Dallas, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Dallas, PA

Average wind speed in May - Dallas, PA
  • Average wind speed in May: 6.5mph

The windiest months (with the highest average wind speed) are March and April (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in May
Dallas, PA

Average humidity in May - Dallas, PA
  • Average humidity in May: 79%

The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (78%).

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Average rainfall in May
Dallas, PA

Average rainfall in May - Dallas, PA
  • Average rainfall in May: 2.4"

The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in May
Dallas, PA

Average rainfall days in May - Dallas, PA
  • 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 (7.6 days).

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Average snowfall in May
Dallas, PA

Average snowfall in May - Dallas, PA
  • Average snowfall in May: 0.39"

The month with the highest snowfall is February (7.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Dallas, PA

Average snowfall days in May - Dallas, PA
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is January (13.7 days).
The 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
Dallas, PA

Average daylight in May / Average sunshine in May - Dallas, PA
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

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Average sunshine days in May
Dallas, PA

Average sunshine days in May - Dallas, PA
  • Average sunshine days in May: 11.1 days

The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is April (10.3 days).

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Average UV index in May
Dallas, PA

Average UV index in May - Dallas, PA
  • Average UV index in May: 5

The 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
Dallas, PA

Average cloud cover in May - Dallas, PA
  • Average cloud cover in May: 50

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 36).

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Average visibility in May
Dallas, PA

Average visibility in May - Dallas, PA
  • Average visibility in May: 5mi

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).

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Dallas, Pennsylvania, USA

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