May weather forecast
Macungie, PA

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Weather in May

The last month of the spring, May, is a pleasant month in Macungie, Pennsylvania, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 51.1°F (10.6°C).

Temperature

May signals a shift in the average high-temperature, moving from April's mild 58.8°F (14.9°C) to an agreeable 70°F (21.1°C). Macungie experiences a mean temperature of 51.1°F (10.6°C) during May nights.

Humidity

In May, the average relative humidity is 79%.

Rainfall

In May, the rain falls for 17.5 days. Throughout May, 3.07" (78mm) of precipitation is accumulated. In Macungie, during the entire year, the rain falls for 156.9 days and collects up to 33.15" (842mm) of precipitation.

Snowfall

Months with snowfall in Macungie are January through May, October through December. May is the last month it regularly snows in Macungie. During 0.1 snowfall days, in May, Macungie aggregates 0.12" (3mm) of snow. Throughout the year, there are 31.2 snowfall days, and 18.98" (482mm) of snow is accumulated.

Daylight

The average length of the day in May in Macungie is 14h and 27min.
On the first day of the month, sunrise is at 6:00 am and sunset at 7:58 pm. On the last day of May, sunrise is at 5:33 am and sunset at 8:26 pm EDT.

Sunshine

In May, the average sunshine in Macungie is 8.1h.

UV index

In Macungie, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

What is the average May temperature in Macungie?

Macungie in May has an average high-temperature of 70°F (21.1°C) and an average low-temperature of 51.1°F (10.6°C).

What is the average humidity in May in Macungie?

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

How many days does it rain in May in Macungie?

In May, in Macungie, the rain falls for 17.5 days. Throughout May, 3.07" (78mm) of precipitation is accumulated.

What is the last month it snows in Macungie?

May is the last month it regularly snows in Macungie, Pennsylvania. During 0.1 snowfall days, in May, Macungie aggregates 0.12" (3mm) of snow.

What is the average length of the day in May in Macungie?

The average day length in May is 14h and 27min.

When is the sunrise / sunset in May in Macungie?

On the first day of May, sunrise is at 6:00 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:26 pm EDT.

How long on average sun shines in May in Macungie?

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

What is the UV index intensity in May in Macungie?

The average daily maximum UV index in May in Macungie is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Macungie, PA

Average temperature in May - Macungie, PA
  • Average high temperature in May: 70°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in May: 51.1°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in May
Macungie, PA

Average pressure in May - Macungie, 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
Macungie, PA

Average wind speed in May - Macungie, PA
  • Average wind speed in May: 6.2mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in May
Macungie, PA

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

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in May
Macungie, PA

Average rainfall in May - Macungie, PA
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in May
Macungie, PA

Average rainfall days in May - Macungie, PA
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in May
Macungie, PA

Average snowfall in May - Macungie, PA
  • Average snowfall in May: 0.12"

The month with the highest snowfall is March (5.16").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Macungie, PA

Average snowfall days in May - Macungie, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (9.3 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
Macungie, PA

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

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 18min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in May
Macungie, PA

Average sunshine days in May - Macungie, PA
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (11.3 days).

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Average UV index in May
Macungie, PA

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

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

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Average cloud cover in May
Macungie, PA

Average cloud cover in May - Macungie, PA
  • Average cloud cover in May: 49

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in May
Macungie, PA

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

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

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Macungie, Pennsylvania, USA

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