Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May's arrival signals a modest temperature shift, moving from 76.1°F (24.5°C) in April to a still moderately hot 83.8°F (28.8°C). A significant drop from the day's peak to an average low-temperature of 62.2°F (16.8°C) is noted during the nights in May.Heat index
The heat index value for May is calculated to be a hot 91.4°F (33°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Note that heat index values are valued for light wind and location in the shade. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
In May, the average relative humidity is 72%.Rainfall
In Heiberger, during May, the rain falls for 13.8 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, there are 167.4 rainfall days, and 36.93" (938mm) of precipitation is accumulated.Snowfall
In Heiberger, snow does not fall in March through October.Daylight
The average length of the day in May is 13h and 52min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:31 pm. On the last day of May, sunrise is at 5:42 am and sunset at 7:51 pm CDT.
Sunshine
In Heiberger, the average sunshine in May is 10.1h.UV index
The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 6 in May translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Heiberger, AL
- Average high temperature in May: 83.8°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (53.8°F).
- Average low temperature in May: 62.2°F
The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in May
Heiberger, AL
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in May
Heiberger, AL
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in May
Heiberger, AL
- Average humidity in May: 72%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Heiberger, AL
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is April (3.94").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in May
Heiberger, AL
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in May
Heiberger, AL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in May
Heiberger, AL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (1.1 days).
The 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
Heiberger, AL
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days in May
Heiberger, AL
- Average sunshine days in May: 15.6 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (8.1 days).
Average UV index in May
Heiberger, AL
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in May
Heiberger, AL
- Average cloud cover in May: 33
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are September and October (Cloud cover 29).
Average visibility in May
Heiberger, AL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Heiberger, Alabama, USA
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