May weather forecast
Sterling, PA

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Weather in May

May, the last month of the spring in Sterling, is an enjoyable month, with an average temperature fluctuating between 66.7°F (19.3°C) and 47.8°F (8.8°C).

Temperature

In Sterling, the average high-temperature in May increases from a fresh 54.7°F (12.6°C) in April to a refreshing 66.7°F (19.3°C). In the month of May, an average of 47.8°F (8.8°C) marks the low-temperature in Sterling.

Humidity

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

Rainfall

In Sterling, during May, the rain falls for 17.6 days and regularly aggregates up to 2.95" (75mm) of precipitation. Throughout the year, in Sterling, there are 154.8 rainfall days, and 32.24" (819mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Sterling. During 0.6 snowfall days, in May, Sterling aggregates 0.79" (20mm) of snow. In Sterling, Pennsylvania, during the entire year, snow falls for 62.1 days and aggregates up to 38.86" (987mm) of snow.

Daylight

In Sterling, the average length of the day in May is 14h and 31min.
On the first day of May in Sterling, sunrise is at 5:57 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:28 pm EDT.

Sunshine

In May, the average sunshine in Sterling is 8h.

UV index

The months with the highest UV index in Sterling are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 5 during May translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. 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. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are the temperatures in Sterling in May?

An average high-temperature, in May, in Sterling, is 66.7°F (19.3°C) and the average low-temperature is 47.8°F (8.8°C).

What is the average humidity in May in Sterling?

The average relative humidity in May in Sterling is 80%.

How many days does it rain in May in Sterling?

In Sterling, in May, during 17.6 rainfall days, 2.95" (75mm) of precipitation is typically accumulated.

What is the last month it snows in Sterling?

May is the last month it regularly snows in Sterling, Pennsylvania. During 0.6 snowfall days, in May, Sterling aggregates 0.79" (20mm) of snow.

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

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

What time are sunrise and sunset in May in Sterling?

On the first day of May in Sterling, sunrise is at 5:57 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:28 pm EDT.

How many hours of sunshine does Sterling have in May?

In Sterling, the average sunshine duration in May is 8h.

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

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

What is the UV index reading in May in Sterling?

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

Average temperature in May - Sterling, PA
  • Average high temperature in May: 66.7°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 (29.8°F).

  • Average low temperature in May: 47.8°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in May
Sterling, PA

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

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Sterling, PA

Average wind speed in May - Sterling, PA
  • Average wind speed in May: 6.7mph

The windiest months (with the highest average wind speed) are January and February (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in May
Sterling, PA

Average humidity in May - Sterling, PA
  • Average humidity in May: 80%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is July (77%).

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Average rainfall in May
Sterling, PA

Average rainfall in May - Sterling, PA
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in May
Sterling, PA

Average rainfall days in May - Sterling, PA
  • Average rainfall days in May: 17.6 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in May
Sterling, PA

Average snowfall in May - Sterling, PA
  • Average snowfall in May: 0.79"

The month with the highest snowfall is February (8.03").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Sterling, PA

Average snowfall days in May - Sterling, PA
  • Average snowfall days in May: 0.6 days

The month with the highest number of snowfall days is January (13.3 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
Sterling, PA

Average daylight in May / Average sunshine in May - Sterling, 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 12min).

  • Average sunshine in May: 8h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

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Average sunshine days in May
Sterling, PA

Average sunshine days in May - Sterling, PA
  • Average sunshine days in May: 10.9 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (10.9 days).

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Average UV index in May
Sterling, PA

Average UV index in May - Sterling, 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
Sterling, PA

Average cloud cover in May - Sterling, PA
  • Average cloud cover in May: 52

The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in May
Sterling, PA

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

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

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Sterling, Pennsylvania, USA

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