May weather forecast
Walston, PA

Weather in May

May, the last month of the spring in Walston, is a pleasant month, with an average temperature fluctuating between 48.4°F (9.1°C) and 68.9°F (20.5°C).

Temperature

In May, the average high-temperature rises from a mild 56.8°F (13.8°C) in April to an agreeable 68.9°F (20.5°C). In Walston, Pennsylvania, in May, the average low-temperature is 48.4°F (9.1°C).

Humidity

The average relative humidity in May in Walston is 79%.

Rainfall

In May, the rain falls for 18 days. Throughout May, 2.36" (60mm) of precipitation is accumulated. In Walston, Pennsylvania, during the entire year, the rain falls for 151.9 days and collects up to 22.13" (562mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Walston. May is the last month it regularly snows in Walston. During 0.6 snowfall days, in May, Walston aggregates 0.55" (14mm) of snow. In Walston, during the entire year, snow falls for 71 days and aggregates up to 22.32" (567mm) of snow.

Daylight

In May, the average length of the day in Walston, Pennsylvania, is 14h and 29min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:12 pm. On the last day of May, in Walston, sunrise is at 5:46 am and sunset at 8:40 pm EDT.

Sunshine

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Walston?

The average high-temperature, in May, in Walston, is 68.9°F (20.5°C), while the average low-temperature is 48.4°F (9.1°C).

What is the average humidity in May in Walston?

In May, the average relative humidity is 79%.

How many days does it rain in May in Walston?

In Walston, in May, during 18 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

What is the last month it snows in Walston?

May is the last month it regularly snows in Walston, Pennsylvania. During 0.6 snowfall days, in May, Walston aggregates 0.55" (14mm) of snow.

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

In May, the average day length in Walston is 14h and 29min.

When is the sunrise / sunset in May in Walston?

In May, on the first day of the month, sunrise is at 6:13 am and sunset at 8:12 pm. On the last day of the month, in Walston, sunrise is at 5:46 am and sunset at 8:40 pm EDT.

How long on average sun shines in May in Walston?

The average sunshine duration in May in Walston is 8.1h.

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

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

What is the UV index reading in May in Walston?

In Walston, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Walston, PA

Average temperature in May - Walston, PA
  • Average high temperature in May: 68.9°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in May: 48.4°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in May
Walston, PA

Average pressure in May - Walston, PA
  • Average pressure in May: 30"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
Walston, PA

Average wind speed in May - Walston, PA
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in May
Walston, PA

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

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).

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Average rainfall in May
Walston, PA

Average rainfall in May - Walston, PA
  • Average rainfall in May: 2.36"

The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is November (1.26").

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Average rainfall days in May
Walston, PA

Average rainfall days in May - Walston, PA
  • Average rainfall days in May: 18 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in May
Walston, PA

Average snowfall in May - Walston, PA
  • Average snowfall in May: 0.55"

The month with the highest snowfall is January (5.63").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Walston, PA

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

The month with the highest number of snowfall days is January (18.6 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
Walston, PA

Average daylight in May / Average sunshine in May - Walston, PA
  • Average daylight in May: 14h and 29min

The month with the longest days is June (Average daylight: 15h and 4min).
The month with the shortest days is December (Average daylight: 9h and 17min).

  • Average sunshine in May: 8h and 6min

The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

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Average sunshine days in May
Walston, PA

Average sunshine days in May - Walston, PA
  • Average sunshine days in May: 10.7 days

The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (7.8 days).

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Average UV index in May
Walston, PA

Average UV index in May - Walston, 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
Walston, PA

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

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 39).

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Average visibility in May
Walston, PA

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

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).

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