May weather forecast
Petersburg, PA

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Weather in May

May, the last month of the spring in Petersburg, is a pleasant month, with an average temperature ranging between min 48.7°F (9.3°C) and max 69.4°F (20.8°C).

Temperature

In Petersburg, the average high-temperature in May rises, from a refreshing 57.9°F (14.4°C) in April, to a pleasant 69.4°F (20.8°C). Throughout May, Petersburg's nights cool down to an average of 48.7°F (9.3°C).

Humidity

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

Rainfall

May is the month with the most rainfall in Petersburg. Rain falls for 17.8 days and accumulates 2.72" (69mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Petersburg. During 0.3 snowfall days, in May, Petersburg aggregates 0.12" (3mm) of snow. Throughout the year, in Petersburg, Pennsylvania, there are 50 snowfall days, and 16.77" (426mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 28min.
On the first day of May in Petersburg, Pennsylvania, sunrise is at 6:09 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:36 pm EDT.

Sunshine

In May, the average sunshine in Petersburg is 8.4h.

UV index

In Petersburg, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What are the temperatures in Petersburg in May?

May temperatures in Petersburg, Pennsylvania, vary between a high-temperature of 69.4°F (20.8°C) and a low-temperature of 48.7°F (9.3°C).

What is the average humidity in May in Petersburg?

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

What is the rainiest month in Petersburg?

May is the month with the most rainfall in Petersburg, Pennsylvania. Rain falls for 17.8 days and accumulates 2.72" (69mm) of precipitation.

How many days does it rain in May in Petersburg?

In Petersburg, Pennsylvania, in May, during 17.8 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

What is the last month it snows in Petersburg?

May is the last month it regularly snows in Petersburg. During 0.3 snowfall days, in May, Petersburg aggregates 0.12" (3mm) of snow.

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

The average day length in May in Petersburg is 14h and 28min.

When are sunrise and sunset in May in Petersburg?

In May, on the first day of the month, sunrise is at 6:09 am and sunset at 8:08 pm. On the last day of the month, in Petersburg, Pennsylvania, sunrise is at 5:43 am and sunset at 8:36 pm EDT.

How long on average sun shines in May in Petersburg?

In May, the average sunshine duration in Petersburg, Pennsylvania, is 8.4h.

How high is the UV index in May in Petersburg?

In Petersburg, Pennsylvania, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to 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
Petersburg, PA

Average temperature in May - Petersburg, PA
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in May: 48.7°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 (19.8°F).

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Average pressure in May
Petersburg, PA

Average pressure in May - Petersburg, 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 (29.95"Hg).

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Average wind speed in May
Petersburg, PA

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

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in May
Petersburg, PA

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

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is July (76%).

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Average rainfall in May
Petersburg, PA

Average rainfall in May - Petersburg, PA
  • Average rainfall in May: 2.72"

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is November (1.5").

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Average rainfall days in May
Petersburg, PA

Average rainfall days in May - Petersburg, 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 February (10.3 days).

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Average snowfall in May
Petersburg, PA

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

The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Petersburg, PA

Average snowfall days in May - Petersburg, PA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (15 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
Petersburg, PA

Average daylight in May / Average sunshine in May - Petersburg, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in May
Petersburg, PA

Average sunshine days in May - Petersburg, PA
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is February (9.5 days).

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Average UV index in May
Petersburg, PA

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

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Petersburg, PA

Average cloud cover in May - Petersburg, PA
  • Average cloud cover in May: 47

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 35).

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Average visibility in May
Petersburg, PA

Average visibility in May - Petersburg, 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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Petersburg, Pennsylvania, USA

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