May weather forecast
Walnut Hill, PA

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Weather in May

May, the last month of the spring in Walnut Hill, is a pleasant month, with an average temperature fluctuating between 54°F (12.2°C) and 71.1°F (21.7°C).

Temperature

A rise in the average high-temperature is observed during May, moving from a refreshing 61°F (16.1°C) in April to a pleasant 71.1°F (21.7°C). During the month of May, an average temperature of 54°F (12.2°C) is noted during the nights.

Humidity

In Walnut Hill, the average relative humidity in May is 78%.

Rainfall

In Walnut Hill, in May, during 14.4 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Walnut Hill, Pennsylvania, during the entire year, the rain falls for 135 days and collects up to 17.76" (451mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in Walnut Hill. May is the last month it regularly snows. During 0.1 snowfall days, in May, Walnut Hill aggregates 0.12" (3mm) of snow. Throughout the year, in Walnut Hill, there are 16.6 snowfall days, and 5.47" (139mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 24min.
On the first day of the month, sunrise is at 5:59 am and sunset at 7:55 pm. On the last day of May, sunrise is at 5:34 am and sunset at 8:23 pm EDT.

Sunshine

The average sunshine in May is 8.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 in May transforms into the following instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What are May temperatures in Walnut Hill?

The high-temperature, in May, in Walnut Hill, is 71.1°F (21.7°C), while the low-temperature averages to 54°F (12.2°C).

What is the average humidity in May in Walnut Hill?

In May, the average relative humidity in Walnut Hill is 78%.

How much does it rain in Walnut Hill in May?

In Walnut Hill, during May, the rain falls for 14.4 days and regularly aggregates up to 1.65" (42mm) of precipitation.

What is the last month it snows in Walnut Hill?

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

How many hours of daylight does Walnut Hill have in May?

The average day length in May is 14h and 24min.

What time are sunrise and sunset in May in Walnut Hill?

On the first day of May in Walnut Hill, sunrise is at 5:59 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:23 pm EDT.

How long on average sun shines in May in Walnut Hill?

In May, the average sunshine duration is 8.6h.

What is the month with the highest UV index in Walnut Hill?

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

What is the UV index intensity in May in Walnut Hill?

In Walnut Hill, Pennsylvania, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
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
Walnut Hill, PA

Average temperature in May - Walnut Hill, PA
  • Average high temperature in May: 71.1°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in May: 54°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in May
Walnut Hill, PA

Average pressure in May - Walnut Hill, 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).

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Average wind speed in May
Walnut Hill, PA

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

The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in May
Walnut Hill, PA

Average humidity in May - Walnut Hill, PA
  • Average humidity in May: 78%

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in May
Walnut Hill, PA

Average rainfall in May - Walnut Hill, PA
  • Average rainfall in May: 1.65"

The wettest month (with the highest rainfall) is August (2.36").
The driest month (with the least rainfall) is November (1.06").

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Average rainfall days in May
Walnut Hill, PA

Average rainfall days in May - Walnut Hill, PA
  • Average rainfall days in May: 14.4 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (6.6 days).

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Average snowfall in May
Walnut Hill, PA

Average snowfall in May - Walnut Hill, PA
  • Average snowfall in May: 0.12"

The month with the highest snowfall is March (1.5").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Walnut Hill, PA

Average snowfall days in May - Walnut Hill, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (5.2 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
Walnut Hill, PA

Average daylight in May / Average sunshine in May - Walnut Hill, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in May
Walnut Hill, PA

Average sunshine days in May - Walnut Hill, PA
  • Average sunshine days in May: 14.1 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in May
Walnut Hill, PA

Average UV index in May - Walnut Hill, PA
  • Average UV index in May: 6

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

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Average cloud cover in May
Walnut Hill, PA

Average cloud cover in May - Walnut Hill, PA
  • Average cloud cover in May: 47

The months with the most cloud cover are February, March and May (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in May
Walnut Hill, PA

Average visibility in May - Walnut Hill, PA
  • Average visibility in May: 5mi

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

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Walnut Hill, Pennsylvania, USA

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