May weather forecastLouisville, AL
May
Weather in May
May, the last month of the spring in Louisville, is another warm month, with an average temperature ranging between max 83.8°F (28.8°C) and min 63.7°F (17.6°C).Temperature
The shift into May is marked by a modest rise in the average high-temperature, moving from April's warm 77°F (25°C) to a still moderately hot 83.8°F (28.8°C). In the month of May, Louisville witnesses a consistent average low-temperature of 63.7°F (17.6°C).Heat index
The heat index for May is estimated at a hot 89.6°F (32°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in May is 70%.Rainfall
In Louisville, in May, during 13.2 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Louisville, during the entire year, the rain falls for 153.5 days and collects up to 24.41" (620mm) of precipitation.Snowfall
April through December are months without snowfall in Louisville.Daylight
In Louisville, the average length of the day in May is 13h and 47min.On the first day of May, sunrise is at 5:55 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 7:42 pm CDT.
Sunshine
In Louisville, the average sunshine in May is 10.5h.UV index
The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 6 in May translates into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Louisville, AL
- Average high temperature in May: 83.8°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (56.1°F).
- Average low temperature in May: 63.7°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in May
Louisville, AL
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in May
Louisville, AL
- Average wind speed in May: 6mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in May
Louisville, AL
- Average humidity in May: 70%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Louisville, AL
- Average rainfall in May: 2.17"
The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in May
Louisville, AL
- Average rainfall days in May: 13.2 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in May
Louisville, AL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Louisville, AL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Louisville, AL
- Average daylight in May: 13h and 48min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in May: 10h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in May
Louisville, AL
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (7.5 days).
Average UV index in May
Louisville, AL
- Average UV index in May: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in May
Louisville, AL
- Average cloud cover in May: 30
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in May
Louisville, 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).
