May weather forecast
Sylmar, PA

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Weather in May

May, the last month of the spring in Sylmar, is a pleasant month, with an average temperature ranging between min 53.2°F (11.8°C) and max 70.5°F (21.4°C).

Temperature

May sees a rise in the average high-temperature, climbing from an enjoyable 60.8°F (16°C) in April to a pleasant 70.5°F (21.4°C). Sylmar, in May, experiences an average temperature of 53.2°F (11.8°C) at night.

Humidity

The most humid month is May, with an average relative humidity of 81%.

Rainfall

In Sylmar, Pennsylvania, in May, it is raining for 15.1 days, with typically 1.65" (42mm) of accumulated precipitation. In Sylmar, during the entire year, the rain falls for 130.4 days and collects up to 16.3" (414mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in May is 14h and 23min.
On the first day of May, sunrise is at 6:03 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:25 pm EDT.

Sunshine

In May, the average sunshine is 8.4h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, a daily UV index of 6 turns into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in May?

An average high-temperature, in May, in Sylmar, is 70.5°F (21.4°C) and the average low-temperature is 53.2°F (11.8°C).

What is the most humid month?

The most humid month in Sylmar is May, with an average relative humidity of 81%.

What is the average humidity in May?

In Sylmar, the average relative humidity in May is 81%.

How much does it rain in May?

In May, the rain falls for 15.1 days. Throughout May, 1.65" (42mm) of precipitation is accumulated.

When it does not snow?

In Sylmar, snow does not fall in May through October.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May?

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

What time are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:03 am and sunset at 7:58 pm. On the last day of the month, in Sylmar, sunrise is at 5:38 am and sunset at 8:25 pm EDT.

How many hours of sunshine does Sylmar have in May?

In Sylmar, the average sunshine duration in May is 8.4h.

When is the highest UV index?

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

What is the UV index intensity in May in Sylmar?

In Sylmar, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Sylmar, PA

Average temperature in May - Sylmar, PA
  • Average high temperature in May: 70.5°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in May: 53.2°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

Average pressure in May
Sylmar, PA

Average pressure in May - Sylmar, 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).

Average wind speed in May
Sylmar, PA

Average wind speed in May - Sylmar, PA
  • Average wind speed in May: 6.8mph

The windiest months (with the highest average wind speed) are January, February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in May
Sylmar, PA

Average humidity in May - Sylmar, PA
  • Average humidity in May: 81%

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January, March, April and November (76%).

Average rainfall in May
Sylmar, PA

Average rainfall in May - Sylmar, 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 January (0.91").

Average rainfall days in May
Sylmar, PA

Average rainfall days in May - Sylmar, PA
  • Average rainfall days in May: 15.1 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (6 days).

Average snowfall in May
Sylmar, PA

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

The month with the highest snowfall is March (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Sylmar, PA

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

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

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

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in May
Sylmar, PA

Average sunshine days in May - Sylmar, PA
  • Average sunshine days in May: 13.8 days

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is June (13.2 days).

Average UV index in May
Sylmar, PA

Average UV index in May - Sylmar, 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).

Average cloud cover in May
Sylmar, PA

Average cloud cover in May - Sylmar, 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 32).

Average visibility in May
Sylmar, PA

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

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

Sylmar, Pennsylvania, USA

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