May weather forecast and climate
Clay, AL

The last month of the spring, May, is a moderately hot month in Clay, Alabama, with average temperature fluctuating between 60.4°F (15.8°C) and 80.6°F (27°C).

Temperature

In Clay, the average high-temperature slightly increases, from an agreeable 72.9°F (22.7°C) in April, to a moderately hot 80.6°F (27°C). The average low-temperature, in May, is 60.4°F (15.8°C).

Heat index

In May, the average heat index is evaluated at 84.6°F (29.2°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', 'real feel', 'feels like', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, metabolic differences, differences in body mass, height, and shape). 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. 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

The average relative humidity in Clay is 74%.

Rainfall

In May, in Clay, the rain falls for 13.2 days. Throughout May, 1.54" (39mm) of precipitation is accumulated. Throughout the year, there are 149 rainfall days, and 19.88" (505mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Clay.

Daylight

In Clay, the average length of the day is 13.9h.

Sunshine

In Clay, the average sunshine is 10h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for the average 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in May in Clay?

In May, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 60.4°F (15.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), that combines both air temperature and relative humidity, in May is estimated at 84.6°F (29.2°C).

What is the average humidity in May in Clay?

In May, the average relative humidity is 74%.

How much does it rain in Clay in May?

In Clay, in May, it is raining for 13.2 days, with typically 1.54" (39mm) of accumulated precipitation.

When it does not snow in Clay?

In Clay snow does not fall in April through October.

How many hours of daylight does Clay have in May?

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

How long on average sun shines in May in Clay?

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

What are the months with the highest UV index in Clay?

Months with the highest UV index are May through August, with an average maximum UV index of 6.

What is the UV index reading in May in Clay?

In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.
Average temperature in May - Clay, AL
  • Average high temperature in May: 80.6°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.7°F).

  • Average low temperature in May: 60.4°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).

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

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.98").

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

The windiest months (with the highest average wind speed) are January and February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

Average humidity in May - Clay, AL
  • Average humidity in May: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

Average rainfall in May - Clay, AL
  • Average rainfall in May: 1.54"

The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.06").

Average rainfall days in May - Clay, AL
  • Average rainfall days in May: 13.2 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (7.9 days).

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

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

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

The month with the highest number of snowfall days is February (1 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 - Clay, 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: 9.9h).

  • Average sunshine in May: 10h

Months with the most sunshine are June and July (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

Average sunshine days in May - Clay, AL
  • Average sunshine days in May: 15.4 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.6 days).

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

Months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in May - Clay, 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 - Clay, 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).