May weather forecast
Delta, PA

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Weather in May

May, the last month of the spring in Delta, is a pleasant month, with an average temperature ranging between max 71.4°F (21.9°C) and min 54.5°F (12.5°C).

Temperature

The start of May signals an increase in the average high-temperature, moving from a comfortable 61.9°F (16.6°C) in April to an agreeable 71.4°F (21.9°C). May brings an average low-temperature of 54.5°F (12.5°C) to Delta.

Humidity

May is the most humid month, with an average relative humidity of 80%.

Rainfall

In Delta, in May, during 19.3 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. In Delta, during the entire year, the rain falls for 170.1 days and collects up to 36.42" (925mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows in Delta. During 0.1 snowfall days, in May, Delta aggregates 0.08" (2mm) of snow. Throughout the year, there are 21.9 snowfall days, and 10.55" (268mm) of snow is accumulated.

Daylight

In May, the average length of the day in Delta is 14h and 23min.
On the first day of May, sunrise is at 6:04 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:26 pm EDT.

Sunshine

The average sunshine in May in Delta is 8.6h.

UV index

The months with the highest UV index in Delta are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the UV index of 6 transforms into the following advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What are May temperatures in Delta?

In May, the average high-temperature and low-temperature in Delta are 71.4°F (21.9°C) and 54.5°F (12.5°C) respectively.

What is the most humid month in Delta?

May is the most humid month in Delta, with an average relative humidity of 80%.

What is the average humidity in May in Delta?

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

How much does it rain in Delta in May?

In Delta, Pennsylvania, during May, the rain falls for 19.3 days and regularly aggregates up to 3.43" (87mm) of precipitation.

What is the last month it snows in Delta?

May is the last month it regularly snows in Delta. During 0.1 snowfall days, in May, Delta aggregates 0.08" (2mm) of snow.

How many hours of daylight does Delta have in May?

In Delta, the average day length in May is 14h and 23min.

What time are sunrise and sunset in May in Delta?

On the first day of May in Delta, sunrise is at 6:04 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:26 pm EDT.

How many hours of sunshine does Delta have in May?

In May, the average sunshine duration in Delta, Pennsylvania, is 8.6h.

What is the month with the highest UV index in Delta?

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

What is the UV index intensity in May in Delta?

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Delta, PA

Average temperature in May - Delta, PA
  • Average high temperature in May: 71.4°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in May: 54.5°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

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Average pressure in May
Delta, PA

Average pressure in May - Delta, 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
Delta, PA

Average wind speed in May - Delta, PA
  • Average wind speed in May: 6.9mph

The windiest month (with the highest average wind speed) is March (9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in May
Delta, PA

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

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (74%).

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Average rainfall in May
Delta, PA

Average rainfall in May - Delta, PA
  • Average rainfall in May: 3.43"

The wettest month (with the highest rainfall) is August (4.49").
The driest month (with the least rainfall) is January (2.36").

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Average rainfall days in May
Delta, PA

Average rainfall days in May - Delta, PA
  • Average rainfall days in May: 19.3 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall in May
Delta, PA

Average snowfall in May - Delta, PA
  • Average snowfall in May: 0.08"

The month with the highest snowfall is March (3.62").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Delta, PA

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

The month with the highest number of snowfall days is January (6.8 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
Delta, PA

Average daylight in May / Average sunshine in May - Delta, PA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
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 54min).

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Average sunshine days in May
Delta, PA

Average sunshine days in May - Delta, PA
  • Average sunshine days in May: 8.8 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is May (8.8 days).

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Average UV index in May
Delta, PA

Average UV index in May - Delta, 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
Delta, PA

Average cloud cover in May - Delta, PA
  • Average cloud cover in May: 46

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in May
Delta, PA

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

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

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Delta, Pennsylvania, USA

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