May weather forecast and climate
Coal City, AL

The last month of the spring, May, is a warm month in Coal City, Alabama, with average temperature varying between 60.1°F (15.6°C) and 81°F (27.2°C).

Temperature

In May, the average high-temperature slightly increases, from a pleasant 73°F (22.8°C) in April, to a warm 81°F (27.2°C). In May, the average low-temperature is 60.1°F (15.6°C).

Heat index

The average heat index in May is estimated at 85.5°F (29.7°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise 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 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like clothing, wind, differences in body mass, height, and shape, 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. 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 Coal City, Alabama, is 75%.

Rainfall

In Coal City, during May, the rain falls for 16.4 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Coal City, Alabama, during the entire year, the rain falls for 184.1 days and collects up to 41.97" (1066mm) of precipitation.

Snowfall

In Coal City snow does not fall in March through November.

Daylight

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

Sunshine

In May, the average sunshine is 10.1h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
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 Coal City?

In Coal City, Alabama, in May, the average high-temperature is 81°F (27.2°C), and the average low-temperature is 60.1°F (15.6°C). In May, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines relative humidity and air temperature, is calculated to 85.5°F (29.7°C).

What is the average humidity in May in Coal City?

In May, the average relative humidity in Coal City, Alabama, is 75%.

How many days does it rain in May in Coal City?

In Coal City, Alabama, in May, during 16.4 rainfall days, 3.23" (82mm) of precipitation is typically accumulated.

When it does not snow in Coal City?

In Coal City snow does not fall in March through November.

What is the average length of the day in May in Coal City?

In May, the average length of the day in Coal City, Alabama, is 13.9h.

How many hours of sunshine does Coal City have in May?

In May, the average sunshine is 10.1h.

When is the highest UV index in Coal City?

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

How high is the UV index in May in Coal City?

In May, the average daily maximum UV index in Coal City is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in May - Coal City, AL
  • Average high temperature in May: 81°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 (50.9°F).

  • Average low temperature in May: 60.1°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).

Average pressure in May - Coal City, 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 - Coal City, AL
  • Average wind speed in May: 5.5mph

The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

Average humidity in May - Coal City, AL
  • Average humidity in May: 75%

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

Average rainfall in May - Coal City, AL
  • Average rainfall in May: 3.23"

The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is October (2.32").

Average rainfall days in May - Coal City, AL
  • Average rainfall days in May: 16.4 days

The month with the highest number of rainy days is July (22.4 days).
The month with the least rainy days is November (9.2 days).

Average snowfall in May - Coal City, AL
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.91").
Months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in May - Coal City, AL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (1.6 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May / Average sunshine in May - Coal City, 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: 10.1h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days in May - Coal City, AL
  • Average sunshine days in May: 13.1 days

The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (6.2 days).

Average UV index in May - Coal City, 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 - Coal City, AL
  • Average cloud cover in May: 33

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

Average visibility in May - Coal City, 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).