May weather forecastNew Derry, PA

May

Weather in May

May, the last month of the spring in New Derry, is an agreeable month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 70.2°F (21.2°C).

Temperature

New Derry's transition into May is marked by a rise in the average high-temperature, advancing from a mild 59°F (15°C) in April to a pleasant 70.2°F (21.2°C). During May, New Derry sees a mean low-temperature of 49.6°F (9.8°C).

Humidity

In New Derry, the average relative humidity in May is 79%.

Rainfall

May is the month with the most rainfall in New Derry. Rain falls for 20.4 days and accumulates 3.03" (77mm) of precipitation.

Snowfall

In New Derry, snow does not fall in May through September.

Daylight

In May, the average length of the day in New Derry is 14h and 26min.
On the first day of the month, sunrise is at 6:15 am and sunset at 8:13 pm. On the last day of May, sunrise is at 5:49 am and sunset at 8:40 pm EDT.

Sunshine

The average sunshine in May is 8.8h.

UV index

In May, the average daily maximum UV index in New Derry is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 5 during May morphs into the following directions:
Take precautions - Protection against sun damage is advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In May, in New Derry, the average high-temperature is 70.2°F (21.2°C), and the average low-temperature is 49.6°F (9.8°C).

In May, the average relative humidity in New Derry is 79%.

The month with the most rainfall is May, when the rain falls for 20.4 days and typically aggregates up to 3.03" (77mm) of precipitation.

In New Derry, in May, it is raining for 20.4 days, with typically 3.03" (77mm) of accumulated precipitation.

In New Derry, snow does not fall in May through September.

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

The average day length in May in New Derry, Pennsylvania, is 14h and 26min.

On the first day of May, sunrise is at 6:15 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:40 pm EDT.

In New Derry, Pennsylvania, the average sunshine duration in May is 8.8h.

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's 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

59°F

70.2°F

76.6°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.8mph

7.1mph

6.5mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

17.8

20.4

Average snowfall

0.59"

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

8.8

11.2

Average UV index

Average cloud cover

Average visibility

Average temperature in May
New Derry, PA

Average high temperature in May: 70.2°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).

Average low temperature in May: 49.6°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in May
New Derry, 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
New Derry, PA

Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in May
New Derry, PA

Average humidity in May: 79%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).

Average rainfall in May
New Derry, PA

Average rainfall in May: 3.03"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.38").

Average rainfall days in May
New Derry, PA

Average rainfall days in May: 20.4 days

The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (9.5 days).

Average snowfall in May
New Derry, PA

Average snowfall in May: 0"

The month with the highest snowfall is January (4.96").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
New Derry, PA

Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
New Derry, 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 24min).

Average sunshine in May: 8h and 48min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).