May weather forecast
Irvine, PA

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Weather in May

The last month of the spring, May, is a refreshing month in Irvine, Pennsylvania, with an average temperature ranging between max 66.4°F (19.1°C) and min 46°F (7.8°C).

Temperature

Irvine, Pennsylvania, sees an increase in average high-temperatures during May, moving from a cool 53.4°F (11.9°C) in April to an enjoyable 66.4°F (19.1°C). During the month of May, Irvine anticipates a mean low-temperature of 46°F (7.8°C).

Humidity

With an average relative humidity of 80%, May is the least humid month in Irvine.

Rainfall

In Irvine, in May, it is raining for 17.9 days, with typically 2.01" (51mm) of accumulated precipitation. In Irvine, during the entire year, the rain falls for 162.1 days and collects up to 21.81" (554mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.8 snowfall days, in May, Irvine aggregates 0.12" (3mm) of snow. In Irvine, during the entire year, snow falls for 88.7 days and aggregates up to 29.57" (751mm) of snow.

Daylight

The average length of the day in May is 14h and 34min.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of May, in Irvine, sunrise is at 5:44 am and sunset at 8:45 pm EDT.

Sunshine

In May, the average sunshine in Irvine is 8.2h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In May, a regular UV index of 5 translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Always opt for UVA and UVB-resistant sunglasses on radiant days. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What are the temperatures in Irvine in May?

An average high-temperature, in May, in Irvine, is 66.4°F (19.1°C) and the average low-temperature is 46°F (7.8°C).

What is the least humid month in Irvine?

With an average relative humidity of 80%, May is the least humid month in Irvine.

What is the average humidity in May in Irvine?

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

How much does it rain in Irvine in May?

In Irvine, Pennsylvania, in May, it is raining for 17.9 days, with typically 2.01" (51mm) of accumulated precipitation.

What is the last month it snows in Irvine?

May is the last month it regularly snows. During 0.8 snowfall days, in May, Irvine aggregates 0.12" (3mm) of snow.

How many hours of daylight does Irvine have in May?

The average day length in May in Irvine, Pennsylvania, is 14h and 34min.

When is the sunrise / sunset in May in Irvine?

In May, on the first day of the month, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, in Irvine, Pennsylvania, sunrise is at 5:44 am and sunset at 8:45 pm EDT.

How long on average sun shines in May in Irvine?

In Irvine, Pennsylvania, the average sunshine duration in May is 8.2h.

When is the highest UV index in Irvine?

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

How high is the UV index in May in Irvine?

The average daily maximum UV index in May in Irvine, Pennsylvania, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Irvine, PA

Average temperature in May - Irvine, PA
  • Average high temperature in May: 66.4°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in May: 46°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in May
Irvine, PA

Average pressure in May - Irvine, PA
  • Average pressure in May: 29.99"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
Irvine, PA

Average wind speed in May - Irvine, PA
  • Average wind speed in May: 7.1mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in May
Irvine, PA

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

The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (80%).

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Average rainfall in May
Irvine, PA

Average rainfall in May - Irvine, PA
  • Average rainfall in May: 2.01"

The wettest month (with the highest rainfall) is April (2.52").
The driest month (with the least rainfall) is March (1.42").

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Average rainfall days in May
Irvine, PA

Average rainfall days in May - Irvine, PA
  • Average rainfall days in May: 17.9 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in May
Irvine, PA

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

The month with the highest snowfall is December (6.77").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Irvine, PA

Average snowfall days in May - Irvine, PA
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is January (22 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
Irvine, PA

Average daylight in May / Average sunshine in May - Irvine, PA
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 1min

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 6min).

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Average sunshine days in May
Irvine, PA

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

The month with the most sunshine days is September (12.9 days).
The month with the least sunshine days is January (5.1 days).

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Average UV index in May
Irvine, PA

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

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in May
Irvine, PA

Average cloud cover in May - Irvine, PA
  • Average cloud cover in May: 49

The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are July and August (Cloud cover 40).

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Average visibility in May
Irvine, PA

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

The months with the highest visibility are March, April, May, June, July, September, October and November (5mi).
The months with the lowest visibility are January, February, August and December (4mi).

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Irvine, Pennsylvania, USA

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