May weather forecast
Cleveland, OH

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The Veterans Memorial Bridge on the Cuyahoga River, in Cleveland, Ohio
The Veterans Memorial Bridge on the Cuyahoga River, in Cleveland, Ohio

Weather in May

May is characterized by rising temperatures and the welcoming cheer of longer daylight hours. Cleveland witnesses a significant transformation in weather during this month, with it finally taking a steady turn towards warmer climes. This period sees the complete cessation of snowfall and marks the beginning of a prolonged phase without any snow. Increased daily sunshine hours coupled with growing sea temperature add to the pleasantness of this transition towards summer.

Temperature

Cleveland's May weather brings a rise in high-temperatures, moving from a fresh 52.5°F (11.4°C) in April to a comfortable 64.2°F (17.9°C). In Cleveland, the nighttime temperature averages to a cool 50.7°F (10.4°C) during May.

Humidity

In May, the average relative humidity is 77%.

Rainfall

In May, the rain falls for 14.8 days. Throughout May, 1.57" (40mm) of precipitation is accumulated. In Cleveland, during the entire year, the rain falls for 150.7 days and collects up to 17.44" (443mm) of precipitation.

Snowfall

May through October are months without snowfall.

Ocean temperature

In Cleveland, the average seawater temperature in May is 50.5°F (10.3°C).
Note: Immersing oneself in 50.5°F (10.3°C) at sub14°F (-10°C) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.

Daylight

The average length of the day in May in Cleveland is 14h and 32min.
On the first day of the month, sunrise is at 6:22 am and sunset at 8:25 pm. On the last day of May, in Cleveland, sunrise is at 5:55 am and sunset at 8:53 pm EDT.

Sunshine

The average sunshine in May in Cleveland is 9h.

UV index

In Cleveland, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 5 transforms into these recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

What are the temperatures in Cleveland in May?

The average high-temperature, in May, in Cleveland, is 64.2°F (17.9°C), while the average low-temperature is 50.7°F (10.4°C).

What is the average humidity in May in Cleveland?

In Cleveland, the average relative humidity in May is 77%.

How many days does it rain in May in Cleveland?

In Cleveland, Ohio, in May, during 14.8 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.

When it does not snow in Cleveland?

May through October are months without snowfall in Cleveland.

Does it snow in Cleveland in May?

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

How cold is the water in May in Cleveland?

In May, the average ocean temperature in Cleveland, Ohio, is 50.5°F (10.3°C). Swimming in 50.5°F (10.3°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.

How many hours of daylight does Cleveland have in May?

In Cleveland, the average day length in May is 14h and 32min.

When is the sunrise / sunset in May in Cleveland?

In May, on the first day of the month, sunrise is at 6:22 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:53 pm EDT.

How many hours of sunshine does Cleveland have in May?

In May, the average sunshine duration in Cleveland, Ohio, is 9h.

What is the UV index intensity in May in Cleveland?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Cleveland, OH

Average temperature in May - Cleveland, OH
  • Average high temperature in May: 64.2°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in May: 50.7°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in May
Cleveland, OH

Average pressure in May - Cleveland, OH
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
Cleveland, OH

Average wind speed in May - Cleveland, OH
  • Average wind speed in May: 7.9mph

The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

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Average humidity in May
Cleveland, OH

Average humidity in May - Cleveland, OH
  • Average humidity in May: 77%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (74%).

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Average rainfall in May
Cleveland, OH

Average rainfall in May - Cleveland, OH
  • Average rainfall in May: 1.57"

The wettest month (with the highest rainfall) is October (1.81").
The driest months (with the least rainfall) are February and November (1.14").

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Average rainfall days in May
Cleveland, OH

Average rainfall days in May - Cleveland, OH
  • Average rainfall days in May: 14.8 days

The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is February (7.6 days).

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Average snowfall in May
Cleveland, OH

Average snowfall in May - Cleveland, OH
  • Average snowfall in May: 0"

The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Cleveland, OH

Average snowfall days in May - Cleveland, OH
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in May
Cleveland, OH

Average sea temperature in May - Cleveland, OH
  • Average sea temperature in May: 50.5°F

The best month for swimming (with the highest average sea temperature) is August (76.3°F).
The coldest month (with the lowest average sea temperature) is February (33.2°F).

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Average daylight in May /
Average sunshine in May
Cleveland, OH

Average daylight in May / Average sunshine in May - Cleveland, OH
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
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 30min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

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Average sunshine days in May
Cleveland, OH

Average sunshine days in May - Cleveland, OH
  • Average sunshine days in May: 13.9 days

The month with the most sunshine days is July (14.6 days).
The month with the least sunshine days is February (8.5 days).

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Average UV index in May
Cleveland, OH

Average UV index in May - Cleveland, OH
  • Average UV index in May: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in May
Cleveland, OH

Average cloud cover in May - Cleveland, OH
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in May
Cleveland, OH

Average visibility in May - Cleveland, OH
  • Average visibility in May: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

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Cleveland, Ohio, USA

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