May weather - Spring 2024

Weather in May
Frequently asked questions
Average temperature in May
Average pressure in May
Average wind speed in May
Average humidity in May
Average rainfall in May
Average rainfall days in May
Average snowfall in May
Average snowfall days in May
Average sea temperature in May
Average daylight in May
Average sunshine in May
Average sunshine days in May
Average UV index in May
Average cloud cover in May
Average visibility in May

The somber town of Erie, Pennsylvania, from above on a cool and sunny day, with a clear view of the dark and calm water of Lake Erie in the back

Weather in May

Erie’s weather story takes an interesting turn in May. The city abandons its spring attire and begins donning the warm hues of summer. Coming from a relatively cooler April, residents experience an uplift in temperatures, laying the groundwork for the impending summer season. A further increase in temperatures is expected in June, establishing firm summer conditions in Erie. Pleasant weather enables a variety of outdoor activities, becoming a favorite time for picnics and other social events.

Temperature

As May sets, the average high-temperature shows an increase, moving up from a chilly 48.7°F (9.3°C) in April to a refreshing 59.9°F (15.5°C). Throughout May, a steady low-temperature average of 48.7°F (9.3°C) is noted.

Humidity

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

Rainfall

In May, the rain falls for 9.3 days. Throughout May, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 95.5 rainfall days, and 7.17" (182mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Erie aggregates 0.04" (1mm) of snow. Throughout the year, in Erie, there are 28.4 snowfall days, and 1.85" (47mm) of snow is accumulated.

Ocean temperature

In Erie, the average seawater temperature in May is 47.3°F (8.5°C).
Note: Beware of 47.3°F (8.5°C) waters at 55.4°F (13°C), they're uninviting, and a dip below 50°F (10°C) has risks of breath loss and cold shock, contingent on health.

Daylight

The average length of the day in May is 14h and 35min.
On the first day of May, sunrise is at 6:14 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:49 pm EDT.

Sunshine

In May, the average sunshine is 9h.

UV index

In Erie, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Take precautions - Protection against sunburn is recommended. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.

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

Frequently asked questions

What is the average May temperature?

During May, Erie experiences an average high-temperature of 59.9°F (15.5°C) and a low-temperature of 48.7°F (9.3°C).

What is the average humidity in May?

The average relative humidity in May is 81%.

How many days does it rain in May?

In Erie, Pennsylvania, during May, the rain falls for 9.3 days and regularly aggregates up to 0.67" (17mm) of precipitation.

What is the last month it snows?

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

What is the water temperature in May?

In May, the average ocean temperature is 47.3°F (8.5°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

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

In Erie, the average day length in May is 14h and 35min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:14 am and sunset at 8:19 pm. On the last day of the month, in Erie, sunrise is at 5:46 am and sunset at 8:49 pm EDT.

How many hours of sunshine does Erie have in May?

The average sunshine duration in May is 9h.

What is the UV index intensity in May in Erie?

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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

48.7°F 9.3°C

59.9°F 15.5°C

68.7°F 20.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.7mph 18.8km/h

9.6mph 15.4km/h

9.2mph 14.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

1.1

0.3

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

18.6

18.3

16.8

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Erie, PA

Average high temperature in May: 59.9°F

The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (29.8°F).

Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in May
Erie, PA

Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in May
Erie, PA

Average wind speed in May: 8.8mph

The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in May
Erie, PA

Average humidity in May: 81%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are August, September, October and November (78%).

Average rainfall in May
Erie, PA

Average rainfall in May: 0.67"

The wettest month (with the highest rainfall) is October (0.83").
The driest month (with the least rainfall) is September (0.35").

Average rainfall days in May
Erie, PA

Average rainfall days in May: 9.3 days

The month with the highest number of rainy days is August (11.7 days).
The month with the least rainy days is January (4 days).

Average snowfall in May
Erie, PA

Average snowfall in May: 0.04"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Erie, PA

Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature in May
Erie, PA

Average sea temperature in May: 47.2°F

The best month for swimming (with the highest average sea temperature) is August (75.1°F).
The coldest month (with the lowest average sea temperature) is February (32.5°F).

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

Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

Average sunshine in May: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

Average sunshine days in May
Erie, PA

Average sunshine days in May: 18.3 days

The month with the most sunshine days is March (21.3 days).
The month with the least sunshine days is August (16.3 days).

Average UV index in May
Erie, PA

Average UV index in May: 5

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

Average cloud cover in May
Erie, PA

Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in May
Erie, PA

Average visibility in May: 6mi

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

May weather forecast
Erie, PA

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