May weather forecast and climate
Columbia, AL

The last month of the spring, May, is another warm month in Columbia, Alabama, with average temperature ranging between max 84°F (28.9°C) and min 65.1°F (18.4°C).

Temperature

In May, the average high-temperature slightly increases, from 77.5°F (25.3°C) in April, to a still warm 84°F (28.9°C). In Columbia, the average low-temperature is 65.1°F (18.4°C).

Heat index

In May, the average heat index is estimated at a tropical 90.1°F (32.3°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 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like wind, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

May and October, with an average relative humidity of 69%, are the least humid months in Columbia.

Rainfall

In Columbia, it is raining for 14.1 days, with typically 2.72" (69mm) of accumulated precipitation. In Columbia, during the entire year, the rain falls for 164 days and collects up to 31.81" (808mm) of precipitation.

Snowfall

March through December are months without snowfall in Columbia.

Daylight

The average length of the day in May is 13.8h.

Sunshine

The average sunshine in May is 10.5h.

UV index

Months with the highest UV index in Columbia are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in May in Columbia?

In Columbia, Alabama, in May, the average high-temperature is 84°F (28.9°C), and the average low-temperature is 65.1°F (18.4°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that factores the actual air temperature with the relative humidity, in May is appraised at 90.1°F (32.3°C).

What is the least humid month in Columbia?

May and October, with an average relative humidity of 69%, are the least humid months in Columbia.

What is the average humidity in May in Columbia?

In May, the average relative humidity in Columbia is 69%.

How much does it rain in Columbia in May?

In Columbia, Alabama, in May, during 14.1 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

When it does not snow in Columbia?

In Columbia snow does not fall in March through December.

How many hours of daylight does Columbia have in May?

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

How many hours of sunshine does Columbia have in May?

In May, the average sunshine in Columbia is 10.5h.

When is the highest UV index in Columbia?

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

What is the UV index intensity in May in Columbia?

The average daily maximum UV index in May in Columbia is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in May - Columbia, AL
  • Average high temperature in May: 84°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (57.7°F).

  • Average low temperature in May: 65.1°F

Months with the highest average low temperature are July and August (73.2°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

Average pressure in May - Columbia, 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 (29.98").

Average wind speed in May - Columbia, AL
  • Average wind speed in May: 6.4mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in May - Columbia, AL
  • Average humidity in May: 69%

Months with the highest relative humidity are August and December (76%).
Months with the lowest relative humidity are May and October (69%).

Average rainfall in May - Columbia, AL
  • Average rainfall in May: 2.72"

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is November (1.5").

Average rainfall days in May - Columbia, AL
  • Average rainfall days in May: 14.1 days

The month with the highest number of rainy days is August (21.4 days).
The month with the least rainy days is November (7.5 days).

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

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

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

The month with the highest number of snowfall days is January (0.2 days).
Months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in May / Average sunshine in May - Columbia, 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: 10.5h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 5.4h).

Average sunshine days in May - Columbia, AL
  • Average sunshine days in May: 16.2 days

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is July (7 days).

Average UV index in May - Columbia, 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 - Columbia, AL
  • Average cloud cover in May: 28

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 27).

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

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