Baltimore
Maryland, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Baltimore, MD

A golden evening appearance of tall buildings in Baltimore, Maryland, with the clear sky
A golden evening appearance of tall buildings in Baltimore, Maryland, with the clear sky
May is the onset of summer in Baltimore. The weather is characterized by a rise in the temperature to a warm range of 56.8°F (13.8°C) and 75.2°F (24°C). The increase in temperature comes with an increase in the humidity to 66.1%, and the first batch of swimmers can already brave the 48.2°F (9°C) sea temperature.
Rainfall increases in precipitation to 3.5" (88.9mm) across eleven and a half rainfall days, raining mainly in the afternoons. Eight hours of sunshine per day make May warm and pleasant throughout, as the daytime begins to elongate long into the evening hours.

What is the temperature in May in Baltimore?

In May, in Baltimore, the average high-temperature is 75.2°F (24°C), and the average low-temperature is 56.8°F (13.8°C).

What is the average humidity in May in Baltimore?

In May, the average relative humidity in Baltimore, Maryland, is 66.1%.

How many days does it rain in May in Baltimore?

In May, the rain falls for 11.2 days. Throughout May, 3.5" (88.6mm) of precipitation is accumulated.

When it does not snow in Baltimore?

April through October are months without snowfall in Baltimore, Maryland.

What is the ocean temperature in May in Baltimore?

In Baltimore, in May, the average water temperature is 55.9°F (13.3°C). Swimming in 55.9°F (13.3°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.

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

In May, the average length of the day in Baltimore is 14.4h.

How long on average sun shines in May in Baltimore?

In Baltimore, the average sunshine in May is 8.2h.

How high is the UV index in May in Baltimore?

In Baltimore, the average daily maximum UV index in May is 8. A UV Index of 8 to 10 symbolizes a very high health risk from unprotected exposure to the UV radiation.
Average temperature in May - Baltimore, MD
  • Average high temperature in May: 75.2°F

The warmest month (with the highest average high temperature) is July (89°F).
The month with the lowest average high temperature is January (42.4°F).

  • Average low temperature in May: 56.9°F

The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (29.2°F).

Average humidity in May - Baltimore, MD
  • Average humidity in May: 66.1%

The month with the highest relative humidity is September (71.3%).
The month with the lowest relative humidity is April (58.9%).

Average rainfall in May - Baltimore, MD
  • Average rainfall in May: 3.5"

The wettest month (with the highest rainfall) is July (4.6").
The driest month (with the lowest rainfall) is February (2.6").

Average rainfall days in May - Baltimore, MD
  • Average rainfall days in May: 11.2 days

The month with the highest number of rainy days is May (11.2 days).
The month with the lowest number of rainy days is October (8.3 days).

Average snowfall in May - Baltimore, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is February (8").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May - Baltimore, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (3.5 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in May - Baltimore, MD
  • Average sea temperature in May: 55.9°F

The best month for swimming (with the highest average sea temperature) is August (77.5°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).

Average daylight in May / Average sunshine in May - Baltimore, MD
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in May: 8.2h

The month with most sunshine is July (Average sunshine: 9.4h).
The month with least sunshine is December (Average sunshine: 4.7h).

Average UV index in May - Baltimore, MD
  • Average UV index in May: 8

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).