May weather forecast
Mount Morris, PA

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Weather in May

The last month of the spring, May, is a pleasant month in Mount Morris, Pennsylvania, with an average temperature ranging between max 71.6°F (22°C) and min 50.9°F (10.5°C).

Temperature

As Mount Morris, Pennsylvania, enters May, the average high-temperature increases from the a mild 60.4°F (15.8°C) of April to a pleasant 71.6°F (22°C). Mount Morris cools down to an average low-temperature of 50.9°F (10.5°C) throughout the month of May.

Humidity

The average relative humidity in May is 79%.

Rainfall

The month with the most rainfall is May, when the rain falls for 20.5 days and typically aggregates up to 4.02" (102mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Mount Morris aggregates 0.31" (8mm) of snow. In Mount Morris, during the entire year, snow falls for 63.1 days and aggregates up to 32.32" (821mm) of snow.

Daylight

The average length of the day in May is 14h and 23min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:14 pm. On the last day of May, sunrise is at 5:54 am and sunset at 8:41 pm EDT.

Sunshine

In Mount Morris, the average sunshine in May is 8.8h.

UV index

May through July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

The high-temperature, in May, in Mount Morris, records 71.6°F (22°C), while the low-temperature is 50.9°F (10.5°C).

What is the average humidity in May?

In May, the average relative humidity is 79%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 20.5 days and accumulates 4.02" (102mm) of precipitation.

How much does it rain in May?

In Mount Morris, during May, the rain falls for 20.5 days and regularly aggregates up to 4.02" (102mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Mount Morris aggregates 0.31" (8mm) of snow.

What is the average length of the day in May?

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

When are sunrise and sunset in May?

On the first day of May, sunrise is at 6:19 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:41 pm EDT.

How many hours of sunshine does Mount Morris have in May?

In May, the average sunshine duration is 8.8h.

When is the highest UV index?

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

How high is the UV index in May?

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Mount Morris, PA

Average temperature in May - Mount Morris, PA
  • Average high temperature in May: 71.6°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in May: 50.9°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in May
Mount Morris, PA

Average pressure in May - Mount Morris, 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
Mount Morris, PA

Average wind speed in May - Mount Morris, PA
  • Average wind speed in May: 5.8mph

The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in May
Mount Morris, PA

Average humidity in May - Mount Morris, PA
  • Average humidity in May: 79%

The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are July and August (77%).

Average rainfall in May
Mount Morris, PA

Average rainfall in May - Mount Morris, PA
  • Average rainfall in May: 4.02"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (2.17").

Average rainfall days in May
Mount Morris, PA

Average rainfall days in May - Mount Morris, PA
  • Average rainfall days in May: 20.5 days

The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is January (11.1 days).

Average snowfall in May
Mount Morris, PA

Average snowfall in May - Mount Morris, PA
  • Average snowfall in May: 0.31"

The month with the highest snowfall is February (7.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Mount Morris, PA

Average snowfall days in May - Mount Morris, PA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (17 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Mount Morris, PA

Average daylight in May / Average sunshine in May - Mount Morris, 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 5min

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

Average sunshine days in May
Mount Morris, PA

Average sunshine days in May - Mount Morris, PA
  • Average sunshine days in May: 8.6 days

The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.7 days).

Average UV index in May
Mount Morris, PA

Average UV index in May - Mount Morris, 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
Mount Morris, PA

Average cloud cover in May - Mount Morris, PA
  • Average cloud cover in May: 46

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in May
Mount Morris, PA

Average visibility in May - Mount Morris, PA
  • Average visibility in May: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).

Mount Morris, Pennsylvania, USA

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