May weather forecast
Mount Penn, PA

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Weather in May

The last month of the spring, May, is a pleasant month in Mount Penn, Pennsylvania, with an average temperature ranging between min 51.4°F (10.8°C) and max 70.3°F (21.3°C).

Temperature

The onset of May marks an increase in the average high-temperature, moving from a refreshing 59.5°F (15.3°C) in April to an agreeable 70.3°F (21.3°C). Mount Penn observes an average nighttime low-temperature of 51.4°F (10.8°C) during the month of May.

Humidity

In May, the average relative humidity in Mount Penn is 80%.

Rainfall

In May, the rain falls for 15.7 days. Throughout May, 1.3" (33mm) of precipitation is accumulated. In Mount Penn, during the entire year, the rain falls for 129 days and collects up to 13.5" (343mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Mount Penn aggregates 0.04" (1mm) of snow. In Mount Penn, during the entire year, snow falls for 19.4 days and aggregates up to 4.45" (113mm) of snow.

Daylight

In Mount Penn, the average length of the day in May is 14h and 26min.
On the first day of the month, sunrise is at 6:01 am and sunset at 7:59 pm. On the last day of May, sunrise is at 5:35 am and sunset at 8:26 pm EDT.

Sunshine

The average sunshine in May is 8.4h.

UV index

May through July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 6 during May leads to these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.

Frequently asked questions

What are the temperatures in May?

The average high-temperature and low-temperature during May are 70.3°F (21.3°C) and 51.4°F (10.8°C) respectively.

What is the average humidity in May?

In Mount Penn, the average relative humidity in May is 80%.

How much does it rain in May?

In Mount Penn, during May, the rain falls for 15.7 days and regularly aggregates up to 1.3" (33mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Mount Penn aggregates 0.04" (1mm) of snow.

How many hours of daylight does Mount Penn have in May?

In Mount Penn, the average day length in May is 14h and 26min.

What time are sunrise and sunset in May?

On the first day of May in Mount Penn, sunrise is at 6:01 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:26 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.4h.

When is the highest UV index?

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

What is the UV index reading in May?

In Mount Penn, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
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
Mount Penn, PA

Average temperature in May - Mount Penn, PA
  • Average high temperature in May: 70.3°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in May
Mount Penn, PA

Average pressure in May - Mount Penn, PA
  • 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
Mount Penn, PA

Average wind speed in May - Mount Penn, PA
  • Average wind speed in May: 6.3mph

The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in May
Mount Penn, PA

Average humidity in May - Mount Penn, PA
  • Average humidity in May: 80%

The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in May
Mount Penn, PA

Average rainfall in May - Mount Penn, PA
  • Average rainfall in May: 1.3"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is February (0.79").

Average rainfall days in May
Mount Penn, PA

Average rainfall days in May - Mount Penn, PA
  • Average rainfall days in May: 15.7 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (7.1 days).

Average snowfall in May
Mount Penn, PA

Average snowfall in May - Mount Penn, PA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (1.54").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Mount Penn, PA

Average snowfall days in May - Mount Penn, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Mount Penn, PA

Average daylight in May / Average sunshine in May - Mount Penn, PA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 8h and 2min

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 42min).

Average sunshine days in May
Mount Penn, PA

Average sunshine days in May - Mount Penn, PA
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in May
Mount Penn, PA

Average UV index in May - Mount Penn, PA
  • Average UV index in May: 6

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in May
Mount Penn, PA

Average cloud cover in May - Mount Penn, PA
  • Average cloud cover in May: 47

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in May
Mount Penn, PA

Average visibility in May - Mount Penn, PA
  • Average visibility in May: 5mi

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

Mount Penn, Pennsylvania, USA

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