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 witnesses a subtle temperature ascent, adjusting from 75°F (23.9°C) in April to a still warm 82°F (27.8°C). During May, Dallas observes a consistent average nighttime temperature of 64.8°F (18.2°C).Heat index
The heat index value during May is appraised at a hot 87.8°F (31°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. 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. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
With an average relative humidity of 72%, May is the most humid month.Rainfall
May is the month with the most rainfall. Rain falls for 15.8 days and accumulates 4.13" (105mm) of precipitation.Snowfall
In Dallas, snow does not fall in March through October.Daylight
In Dallas, the average length of the day in May is 13h and 52min.On the first day of May, sunrise is at 6:39 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:30 pm CDT.
Sunshine
In Dallas, the average sunshine in May is 8.9h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The UV index of 7 in May translates into these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the most humid month?
What is the average humidity in May?
What is the rainiest month?
How much does it rain in May?
When it does not snow?
How many hours of daylight does Dallas have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Dallas have in May?
When is the highest UV index?
What is the UV index reading in May?
Average temperature in May
Dallas, TX
- Average high temperature in May: 82°F
The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (54.3°F).
- Average low temperature in May: 64.8°F
The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).
Average pressure in May
Dallas, TX
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Dallas, TX
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in May
Dallas, TX
- Average humidity in May: 72%
The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).
Average rainfall in May
Dallas, TX
- Average rainfall in May: 4.13"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in May
Dallas, TX
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in May
Dallas, TX
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in May
Dallas, TX
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Dallas, 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: 8h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in May
Dallas, TX
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in May
Dallas, TX
- Average UV index in May: 7
The months with the highest UV index are May, 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
Dallas, TX
- Average cloud cover in May: 35
The months with the most cloud cover are February and March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in May
Dallas, 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).
Dallas, Texas, USA
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