May weather forecast and climate
Commerce, AL

The last month of the spring, May, is another warm month in Commerce, Alabama, with average temperature varying between 62.8°F (17.1°C) and 85.1°F (29.5°C).

Temperature

In May, the average high-temperature marginally rises, from a moderately hot 77°F (25°C) in April, to a still warm 85.1°F (29.5°C). The average low-temperature, in Commerce, Alabama, is 62.8°F (17.1°C).

Heat index

In May, the average heat index is estimated at a hot 93.7°F (34.3°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, differences in body mass, height, and shape, clothing). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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 is 72%.

Rainfall

In Commerce, during May, the rain falls for 13.4 days and regularly aggregates up to 3.15" (80mm) of precipitation. Throughout the year, there are 171.8 rainfall days, and 35.16" (893mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall.

Daylight

In May, the average length of the day in Commerce is 13.8h.

Sunshine

In May, the average sunshine is 10.4h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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 Commerce?

In May, in Commerce, Alabama, the average high-temperature is 85.1°F (29.5°C), and the average low-temperature is 62.8°F (17.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, in May is appraised at 93.7°F (34.3°C).

What is the average humidity in May in Commerce?

The average relative humidity in May in Commerce is 72%.

How many days does it rain in May in Commerce?

In Commerce, Alabama, in May, during 13.4 rainfall days, 3.15" (80mm) of precipitation is typically accumulated.

When it does not snow in Commerce?

April through November are months without snowfall in Commerce, Alabama.

How many hours of daylight does Commerce have in May?

In May, the average length of the day is 13.8h.

How long on average sun shines in May in Commerce?

In Commerce, Alabama, the average sunshine in May is 10.4h.

What is the month with the highest UV index in Commerce?

Months with the highest UV index in Commerce are May through August, with an average maximum UV index of 7.

How high is the UV index in May in Commerce?

In Commerce, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.
Average temperature in May - Commerce, AL
  • Average high temperature in May: 85.1°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (56.7°F).

  • Average low temperature in May: 62.8°F

The month with the highest average low temperature is August (72.1°F).
The coldest month (with the lowest average low temperature) is January (39°F).

Average pressure in May - Commerce, AL
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is January (30.16").
Months with the lowest atmospheric pressure are June and August (29.97").

Average wind speed in May - Commerce, AL
  • Average wind speed in May: 5.7mph

The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in May - Commerce, AL
  • Average humidity in May: 72%

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

Average rainfall in May - Commerce, AL
  • Average rainfall in May: 3.15"

The wettest months (with the highest rainfall) are August and December (3.94").
The driest month (with the least rainfall) is November (1.93").

Average rainfall days in May - Commerce, AL
  • Average rainfall days in May: 13.4 days

The month with the highest number of rainy days is July (23 days).
The month with the least rainy days is November (7.3 days).

Average snowfall in May - Commerce, AL
  • Average snowfall in May: 0"

Months with the highest snowfall are January and February (0.2").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is January (0.4 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 - Commerce, AL
  • Average daylight in May: 13.8h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in May: 10.4h

The month with the most sunshine is June (Average sunshine: 10.8h).
Months with the least sunshine are February and December (Average sunshine: 5.1).

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

Months with the most sunshine days are October and November (21 days).
The month with the least sunshine days is July (6.5 days).

Average UV index in May - Commerce, AL
  • Average UV index in May: 7

Months with the highest UV index are May, June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 3).

Average cloud cover in May - Commerce, AL
  • Average cloud cover in May: 32

The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 29).

Average visibility in May - Commerce, AL
  • Average visibility in May: 6mi

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