Erie
Pennsylvania, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Erie, PA

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
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
May, the last month of the spring, in Erie, is a comfortable month, with average temperature ranging between max 66.6°F (19.2°C) and min 48.2°F (9°C).

Temperature

In May, the average high-temperature increases, from a moderate 56.1°F (13.4°C) in April, to a comfortable 66.6°F (19.2°C). The average low-temperature, in Erie, is 48.2°F (9°C).

Humidity

The average relative humidity in May is 68.9%.

Rainfall

In Erie, in May, it is raining for 12.8 days, with typically 3.4" (87.4mm) of accumulated precipitation. Throughout the year, in Erie, there are 166.4 rainfall days, and 42.2" (1070.8mm) of precipitation is accumulated.

Snowfall

In Erie snow does not fall through September.

Ocean temperature

In Erie, in May, the average water temperature is 47.3°F (8.5°C).
Note: Swimming in 47.3°F (8.5°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in May is 14.6h.

Sunshine

In Erie, the average sunshine in May is 8h.

UV index

The average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in May interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in May in Erie?

The average high-temperature, in May, in Erie, is 66.6°F (19.2°C), while the average low-temperature is 48.2°F (9°C).

What is the average humidity in May in Erie?

In May, the average relative humidity in Erie, Pennsylvania, is 68.9%.

How much does it rain in Erie in May?

In Erie, Pennsylvania, in May, during 12.8 rainfall days, 3.4" (87.4mm) of precipitation is typically accumulated.

Does it snow in Erie in May?

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

When it does not snow in Erie?

May through September are months without snowfall in Erie, Pennsylvania.

What is the water temperature in May in Erie?

In Erie, the average seawater temperature in May 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.

How many hours of daylight does Erie have in May?

In May, the average length of the day is 14.6h.

How many hours of sunshine does Erie have in May?

In May, the average sunshine in Erie is 8h.

How high is the UV index in May in Erie?

In May, the average daily maximum UV index in Erie is 7. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.
Average temperature in May - Erie, PA
  • Average high temperature in May: 66.6°F

The warmest month (with the highest average high temperature) is July (79.8°F).
The month with the lowest average high temperature is January (33.7°F).

  • Average low temperature in May: 48.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

Average humidity in May - Erie, PA
  • Average humidity in May: 68.9%

The month with the highest relative humidity is February (75.4%).
The month with the lowest relative humidity is April (67.9%).

Average rainfall in May - Erie, PA
  • Average rainfall in May: 3.4"

The wettest month (with the highest rainfall) is September (4.6").
The driest month (with the lowest rainfall) is February (2.4").

Average rainfall days in May - Erie, PA
  • Average rainfall days in May: 12.8 days

The month with the highest number of rainy days is January (19.6 days).
The month with the lowest number of rainy days is July (10.2 days).

Average snowfall in May - Erie, PA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (29.6").
Months with the lowest snowfall are May, June, July, August and September (0").

Average snowfall days in May - Erie, PA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (16.5 days).
Months with the lowest number of snowfall days are May, June, July, August and September (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: 14.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8h

Months with most sunshine are June and July (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 2h).

Average UV index in May - Erie, PA
  • Average UV index in May: 7

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).