May weather forecast
Santiago, PA

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Weather in May

May, the last month of the spring in Santiago, is an agreeable month, with an average temperature ranging between min 50.9°F (10.5°C) and max 72°F (22.2°C).

Temperature

An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a refreshing 60.3°F (15.7°C) to an agreeable 72°F (22.2°C). Throughout May, an average low-temperature of 50.9°F (10.5°C) is experienced in Santiago.

Humidity

In May, the average relative humidity in Santiago is 77%.

Rainfall

In Santiago, Pennsylvania, in May, during 17.5 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, in Santiago, there are 154.8 rainfall days, and 21.22" (539mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Santiago, Pennsylvania. During 0.3 snowfall days, in May, Santiago aggregates 0.04" (1mm) of snow. In Santiago, during the entire year, snow falls for 49.9 days and aggregates up to 10.12" (257mm) of snow.

Daylight

In Santiago, the average length of the day in May is 14h and 26min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:17 pm. On the last day of May, in Santiago, Pennsylvania, sunrise is at 5:52 am and sunset at 8:44 pm EDT.

Sunshine

In May, the average sunshine is 8.6h.

UV index

The months with the highest UV index are May through July, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 6 translates into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Santiago in May?

The high-temperature in Santiago, Pennsylvania, during May is 72°F (22.2°C) and the low-temperature is 50.9°F (10.5°C).

What is the average humidity in May in Santiago?

The average relative humidity in May in Santiago is 77%.

How much does it rain in Santiago in May?

In Santiago, Pennsylvania, during May, the rain falls for 17.5 days and regularly aggregates up to 2.24" (57mm) of precipitation.

What is the last month it snows in Santiago?

May is the last month it regularly snows in Santiago, Pennsylvania. During 0.3 snowfall days, in May, Santiago aggregates 0.04" (1mm) of snow.

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

The average day length in May in Santiago is 14h and 26min.

What time are sunrise and sunset in May in Santiago?

On the first day of May in Santiago, sunrise is at 6:19 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:44 pm EDT.

How many hours of sunshine does Santiago have in May?

The average sunshine duration in May in Santiago, Pennsylvania, is 8.6h.

What are the months with the highest UV index in Santiago?

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

What is the UV index reading in May in Santiago?

In May, the average daily maximum UV index in Santiago is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe 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
Santiago, PA

Average temperature in May - Santiago, PA
  • Average high temperature in May: 72°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in May: 50.9°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in May
Santiago, PA

Average pressure in May - Santiago, PA
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in May
Santiago, PA

Average wind speed in May - Santiago, PA
  • Average wind speed in May: 6mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in May
Santiago, PA

Average humidity in May - Santiago, PA
  • Average humidity in May: 77%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (75%).

Average rainfall in May
Santiago, PA

Average rainfall in May - Santiago, PA
  • Average rainfall in May: 2.24"

The wettest month (with the highest rainfall) is July (2.36").
The driest month (with the least rainfall) is January (1.22").

Average rainfall days in May
Santiago, PA

Average rainfall days in May - Santiago, PA
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in May
Santiago, PA

Average snowfall in May - Santiago, PA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Santiago, PA

Average snowfall days in May - Santiago, PA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Santiago, 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 18min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in May
Santiago, PA

Average sunshine days in May - Santiago, PA
  • Average sunshine days in May: 11.2 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is February (10.7 days).

Average UV index in May
Santiago, PA

Average UV index in May - Santiago, PA
  • Average UV index in May: 6

The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in May
Santiago, PA

Average cloud cover in May - Santiago, PA
  • Average cloud cover in May: 45

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in May
Santiago, PA

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

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

Santiago, Pennsylvania, USA

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