May weather forecast and climate
Birmingham, AL

The colorful evening sky in Birmingham City, Alabama
The colorful evening sky in Birmingham City, Alabama
The last month of the spring, May, is another warm month in Birmingham, Alabama, with average temperature varying between 61°F (16.1°C) and 81.3°F (27.4°C).

Temperature

In May, the average high-temperature marginally rises, from a warm 73.4°F (23°C) in April, to a still moderately hot 81.3°F (27.4°C). In Birmingham, Alabama, in May, the average low-temperature is 61°F (16.1°C).

Heat index

The average heat index is evaluated at 85.8°F (29.9°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like metabolic differences, clothing, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In May, the average relative humidity in Birmingham is 73%.

Rainfall

In Birmingham, in May, during 12.6 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 143.1 rainfall days, and 18.58" (472mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Birmingham.

Daylight

In Birmingham, the average length of the day in May is 13.9h.

Sunshine

In May, the average sunshine in Birmingham is 10h.

UV index

The average daily maximum UV index in Birmingham is 6. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in May in Birmingham?

In Birmingham, in May, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 61°F (16.1°C). In May, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines both air temperature and relative humidity, is evaluated at 85.8°F (29.9°C).

What is the average humidity in May in Birmingham?

In May, the average relative humidity in Birmingham, Alabama, is 73%.

How many days does it rain in May in Birmingham?

In Birmingham, Alabama, during May, the rain falls for 12.6 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow in Birmingham?

In Birmingham, Alabama, snow does not fall in April through October.

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

The average length of the day in May is 13.9h.

How long on average sun shines in May in Birmingham?

In Birmingham, the average sunshine in May is 10h.

What is the UV index intensity in May in Birmingham?

In May, the average daily maximum UV index in Birmingham, Alabama, is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in May - Birmingham, AL
  • Average high temperature in May: 27.4°C

The warmest month (with the highest average high temperature) is July (32.8°C).
The month with the lowest average high temperature is January (10.4°C).

  • Average low temperature in May: 16.1°C

The month with the highest average low temperature is July (21.7°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

Average pressure in May - Birmingham, AL
  • Average pressure in May: 1016.3mbar

The month with the highest atmospheric pressure is January (1021.7mbar).
The month with the lowest atmospheric pressure is June (1015.1mbar).

Average wind speed in May - Birmingham, AL
  • Average wind speed in May: 9.2km/h

The windiest month (with the highest average wind speed) is February (11.9km/h).
The calmest months (with the lowest average wind speed) are July and August (7.2km/h).

Average humidity in May - Birmingham, AL
  • Average humidity in May: 73%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May - Birmingham, AL
  • Average rainfall in May: 39mm

The wettest month (with the highest rainfall) is June (50mm).
The driest month (with the least rainfall) is November (26mm).

Average rainfall days in May - Birmingham, AL
  • Average rainfall days in May: 12.6 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (7.9 days).

Average snowfall in May - Birmingham, AL
  • Average snowfall in May: 0mm

The month with the highest snowfall is January (3mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in May - Birmingham, AL
  • Average snowfall days in May: 0 days

Months with the highest number of snowfall days are January and February (0.8 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May / Average sunshine in May - Birmingham, AL
  • Average daylight in May: 13.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in May: 10h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is February (Average sunshine: 4.7h).

Average sunshine days in May - Birmingham, AL
  • Average sunshine days in May: 16.4 days

The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (11.1 days).

Average UV index in May - Birmingham, AL
  • Average UV index in May: 6

Months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in May - Birmingham, AL
  • Average cloud cover in May: 33

The month with the most cloud cover is February (Cloud cover 48).
Months with the least cloud cover are June and September (Cloud cover 30).

Average visibility in May - Birmingham, AL
  • Average visibility in May: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).