May weather forecastDuncanville, TX
May
Weather in May
The last month of the spring, May, is also a moderately hot month in Duncanville, Texas, with an average temperature fluctuating between 81.9°F (27.7°C) and 64.4°F (18°C).Temperature
Duncanville's transition into May is noticed by a slight rise in the average high-temperature, advancing from a warm 74.8°F (23.8°C) in April to a still moderately hot 81.9°F (27.7°C). May in Duncanville witnesses an average low-temperature hovering around a comfortable 64.4°F (18°C).Heat index
The heat index value for May is appraised at a hot 86°F (30°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
May is the most humid month in Duncanville, with an average relative humidity of 73%.Rainfall
May is the month with the most rainfall in Duncanville. Rain falls for 12.8 days and accumulates 2.68" (68mm) of precipitation.Snowfall
In Duncanville, snow does not fall in March through October.Daylight
The average length of the day in May in Duncanville is 13h and 51min.On the first day of May in Duncanville, Texas, sunrise is at 6:39 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 8:30 pm CDT.
Sunshine
In May, the average sunshine is 8.8h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 7 in May translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Duncanville, TX
- Average high temperature in May: 81.9°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (54.7°F).
- Average low temperature in May: 64.4°F
The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in May
Duncanville, 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
Duncanville, TX
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in May
Duncanville, 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 (56%).
Average rainfall in May
Duncanville, TX
- Average rainfall in May: 2.68"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in May
Duncanville, TX
- Average rainfall days in May: 12.8 days
The month with the highest number of rainy days is September (14.3 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in May
Duncanville, TX
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in May
Duncanville, 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
Duncanville, TX
- Average daylight in May: 13h and 48min
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 48min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in May
Duncanville, TX
- Average sunshine days in May: 15.2 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is September (13.6 days).
Average UV index in May
Duncanville, 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
Duncanville, TX
- Average cloud cover in May: 36
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in May
Duncanville, 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).





