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 showcases a minor temperature ascent, adjusting from April's warm 74.5°F (23.6°C) to a still moderately hot 81.5°F (27.5°C). Throughout the month of May, the nighttime temperature dips to an average of 63.9°F (17.7°C).Heat index
For most parts of May, the heat index is evaluated at a hot 86°F (30°C). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.Heat index evaluations are typically in the context of light winds and shaded environments. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
With an average relative humidity of 73%, May is the most humid month.Rainfall
The months with the most rainfall are May and October, with an average 3.9" (99mm) of precipitation.Snowfall
In Justin, snow does not fall in April through October.Daylight
The average length of the day in May is 13h and 53min.On the first day of May, sunrise is at 6:40 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 8:32 pm CDT.
Sunshine
In Justin, the average sunshine in May is 9h.UV index
In May, the average daily maximum UV index in Justin is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 6 in May translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Justin?
What is the most humid month?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May?
When it does not snow?
What is the average length of the day in May?
What time are sunrise and sunset in May in Justin?
How many hours of sunshine does Justin have in May?
What is the UV index intensity in May?
Average temperature in May
Justin, TX
- Average high temperature in May: 81.5°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (54.3°F).
- Average low temperature in May: 63.9°F
The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in May
Justin, TX
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Justin, TX
- Average wind speed in May: 9.3mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in May
Justin, TX
- Average humidity in May: 73%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).
Average rainfall in May
Justin, TX
- Average rainfall in May: 3.9"
The wettest months (with the highest rainfall) are May and October (3.9").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in May
Justin, TX
- Average rainfall days in May: 14.7 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in May
Justin, TX
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Justin, TX
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.3 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
Justin, TX
- 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in May
Justin, TX
- Average sunshine days in May: 14.5 days
The month with the most sunshine days is January (23.5 days).
The months with the least sunshine days are May and September (14.5 days).
Average UV index in May
Justin, TX
- 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
Justin, TX
- Average cloud cover in May: 34
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in May
Justin, TX
- 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).
Justin, Texas, USA
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