May weather forecastKnoxville, AL
May
Weather in May
May, the last month of the spring in Knoxville, is also a moderately hot month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 83.5°F (28.6°C).Temperature
As April transitions into May, Knoxville notices a gentle rise in the average high-temperature, transitioning from a moderately hot 75.6°F (24.2°C) to a still warm 83.5°F (28.6°C). Knoxville, during the nights of May, experiences an average temperature drop to a refreshing 62.2°F (16.8°C).Heat index
In May, the heat index is evaluated at a hot 89.6°F (32°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.It is essential to grasp that the heat index's numbers are for shade and light wind settings. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
The average relative humidity in May is 73%.Rainfall
In Knoxville, in May, during 14.2 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Knoxville, during the entire year, the rain falls for 166.5 days and collects up to 39.41" (1001mm) of precipitation.Snowfall
March through November are months without snowfall.Daylight
The average length of the day in May is 13h and 52min.On the first day of the month, sunrise is at 6:02 am and sunset at 7:33 pm. On the last day of May, in Knoxville, Alabama, sunrise is at 5:43 am and sunset at 7:54 pm CDT.
Sunshine
In May, the average sunshine is 9.9h.UV index
In Knoxville, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 6 during May leads to these instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Knoxville, AL
- Average high temperature in May: 83.5°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 (52.9°F).
- Average low temperature in May: 62.2°F
The months with the highest average low temperature are July and August (71.6°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).
Average pressure in May
Knoxville, AL
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in May
Knoxville, AL
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in May
Knoxville, AL
- Average humidity in May: 73%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Knoxville, AL
- Average rainfall in May: 2.8"
The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is October (2.28").
Average rainfall days in May
Knoxville, AL
- Average rainfall days in May: 14.2 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in May
Knoxville, AL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Knoxville, AL
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.8 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
Knoxville, AL
- Average daylight in May: 13h and 54min
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: 9h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in May
Knoxville, AL
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in May
Knoxville, 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, February and December (UV index 3).
Average cloud cover in May
Knoxville, AL
- Average cloud cover in May: 34
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in May
Knoxville, 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).
