May weather forecast
Collegeville, PA

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Weather in May

May, the last month of the spring in Collegeville, is an agreeable month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 53.1°F (11.7°C).

Temperature

Collegeville experiences a temperature shift with the start of May, with average high-temperatures moving from a moderate 60.6°F (15.9°C) in April to an agreeable 71.2°F (21.8°C). Collegeville temperatures generally rest at a low of 53.1°F (11.7°C) during the May nights.

Humidity

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

Rainfall

In May, the rain falls for 15.3 days. Throughout May, 1.5" (38mm) of precipitation is accumulated. In Collegeville, Pennsylvania, during the entire year, the rain falls for 132.3 days and collects up to 13.98" (355mm) of precipitation.

Snowfall

In Collegeville, snow does not fall in April through October.

Daylight

The average length of the day in May is 14h and 25min.
On the first day of the month, sunrise is at 6:00 am and sunset at 7:57 pm. On the last day of May, in Collegeville, sunrise is at 5:34 am and sunset at 8:24 pm EDT.

Sunshine

In May, the average sunshine is 8.3h.

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 unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in May interprets into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

What is the average May temperature in Collegeville?

The average high-temperature and low-temperature in Collegeville, Pennsylvania, during May are 71.2°F (21.8°C) and 53.1°F (11.7°C) respectively.

What is the average humidity in May in Collegeville?

In May, the average relative humidity in Collegeville, Pennsylvania, is 78%.

How many days does it rain in May in Collegeville?

In Collegeville, Pennsylvania, in May, it is raining for 15.3 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow in Collegeville?

In Collegeville, Pennsylvania, snow does not fall in April through October.

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

The average day length in May is 14h and 25min.

When is the sunrise / sunset in May in Collegeville?

In May, on the first day of the month, sunrise is at 6:00 am and sunset at 7:57 pm. On the last day of the month, in Collegeville, Pennsylvania, sunrise is at 5:34 am and sunset at 8:24 pm EDT.

How long on average sun shines in May in Collegeville?

The average sunshine duration in May in Collegeville is 8.3h.

When is the highest UV index in Collegeville?

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

What is the UV index intensity in May in Collegeville?

The average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's 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
Collegeville, PA

Average temperature in May - Collegeville, PA
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in May: 53.1°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

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Average pressure in May
Collegeville, PA

Average pressure in May - Collegeville, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Collegeville, PA

Average wind speed in May - Collegeville, PA
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in May
Collegeville, PA

Average humidity in May - Collegeville, PA
  • Average humidity in May: 78%

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are April and July (74%).

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Average rainfall in May
Collegeville, PA

Average rainfall in May - Collegeville, PA
  • Average rainfall in May: 1.5"

The wettest month (with the highest rainfall) is August (1.77").
The driest month (with the least rainfall) is February (0.75").

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Average rainfall days in May
Collegeville, PA

Average rainfall days in May - Collegeville, PA
  • Average rainfall days in May: 15.3 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (6.9 days).

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Average snowfall in May
Collegeville, PA

Average snowfall in May - Collegeville, PA
  • Average snowfall in May: 0"

The months with the highest snowfall are January and February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
Collegeville, PA

Average snowfall days in May - Collegeville, PA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Collegeville, PA

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

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in May
Collegeville, PA

Average sunshine days in May - Collegeville, PA
  • Average sunshine days in May: 13.1 days

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is June (12.8 days).

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Average UV index in May
Collegeville, PA

Average UV index in May - Collegeville, 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, March, November and December (UV index 2).

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Average cloud cover in May
Collegeville, PA

Average cloud cover in May - Collegeville, PA
  • Average cloud cover in May: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in May
Collegeville, PA

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

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