May weather forecastTwin Rocks, PA

May

Weather in May

The last month of the spring, May, is a pleasant month in Twin Rocks, Pennsylvania, with an average temperature varying between 68.2°F (20.1°C) and 49.1°F (9.5°C).

Temperature

Twin Rocks in May sees a temperature change, with average high-temperatures moving from a mild 56.8°F (13.8°C) in April to an agreeable 68.2°F (20.1°C). Twin Rocks, during the month of May, experiences an average low-temperature of 49.1°F (9.5°C).

Humidity

In May, the average relative humidity is 80%.

Rainfall

May is the month with the most rainfall. Rain falls for 20.7 days and accumulates 3.58" (91mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.7 snowfall days, in May, Twin Rocks aggregates 0.31" (8mm) of snow. In Twin Rocks, Pennsylvania, during the entire year, snow falls for 65.6 days and aggregates up to 33.54" (852mm) of snow.

Daylight

In May, the average length of the day in Twin Rocks is 14h and 27min.
On the first day of May, sunrise is at 6:13 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:39 pm EDT.

Sunshine

The average sunshine in May is 8.3h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Enhance your sun protection with tightly woven, yet airy clothing. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.

Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

May temperatures vary between a high-temperature of 68.2°F (20.1°C) and a low-temperature of 49.1°F (9.5°C).

The average relative humidity in May is 80%.

The month with the most rainfall is May, when the rain falls for 20.7 days and typically aggregates up to 3.58" (91mm) of precipitation.

In May, the rain falls for 20.7 days. Throughout May, 3.58" (91mm) of precipitation is accumulated.

May is the last month it regularly snows. During 0.7 snowfall days, in May, Twin Rocks aggregates 0.31" (8mm) of snow.

The average day length in May is 14h and 27min.

In May, on the first day of the month, sunrise is at 6:13 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:39 pm EDT.

The average sunshine duration in May in Twin Rocks is 8.3h.

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

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

56.8°F

68.2°F

75.4°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.6mph

7.8mph

7.1mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

9.3

8.9

10.2

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Twin Rocks, PA

Average high temperature in May: 68.2°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.6°F).

Average low temperature in May: 49.1°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in May
Twin Rocks, PA

Average pressure in May: 30"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in May
Twin Rocks, PA

Average wind speed in May: 7.2mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in May
Twin Rocks, PA

Average humidity in May: 80%

The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and July (78%).

Average rainfall in May
Twin Rocks, PA

Average rainfall in May: 3.58"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is November (1.85").

Average rainfall days in May
Twin Rocks, PA

Average rainfall days in May: 20.7 days

The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is February (9.3 days).

Average snowfall in May
Twin Rocks, PA

Average snowfall in May: 0.31"

The month with the highest snowfall is January (8.27").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Twin Rocks, PA

Average snowfall days in May: 0.7 days

The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Twin Rocks, PA

Average daylight in May: 14h and 24min

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 18min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).