May weather forecastDeco, TX
May
Weather in May
The last month of the spring, May, is a hot month in Deco, Texas, with an average temperature varying between 68.7°F (20.4°C) and 86.4°F (30.2°C).Temperature
Deco's transition into May is marked by a minor temperature shift, moving from a moderately hot 79.2°F (26.2°C) in April to a tropical 86.4°F (30.2°C). In the month of May, Deco witnesses a consistent average low-temperature of 68.7°F (20.4°C).Heat index
The heat index for May is evaluated at a fiery hot 96.8°F (36°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
In Deco, the average relative humidity in May is 73%.Rainfall
The month with the most rainfall is May, when the rain falls for 14.1 days and typically aggregates up to 3.54" (90mm) of precipitation.Snowfall
In Deco, snow does not fall in February through November.Daylight
In Deco, the average length of the day in May is 13h and 40min.On the first day of May, sunrise is at 6:38 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 8:18 pm CDT.
Sunshine
In Deco, 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 value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 7 during May translates into the following directions:
Fend off overexposure. Sun protection is vital. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Deco, TX
- Average high temperature in May: 86.4°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 (61°F).
- Average low temperature in May: 68.7°F
The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in May
Deco, TX
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Deco, TX
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in May
Deco, TX
- Average humidity in May: 73%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (68%).
Average rainfall in May
Deco, TX
- Average rainfall in May: 3.54"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in May
Deco, TX
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is September (18.9 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in May
Deco, TX
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Deco, TX
- 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 February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Deco, TX
- Average daylight in May: 13h and 42min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in May: 8h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in May
Deco, TX
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is January (19.4 days).
The month with the least sunshine days is September (9.1 days).
Average UV index in May
Deco, TX
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Deco, TX
- Average cloud cover in May: 42
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Deco, 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).





