May weather forecastColleyville, TX
May
Weather in May
The last month of the spring, May, is also a moderately hot month in Colleyville, Texas, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 64.8°F (18.2°C).Temperature
May marks a minor ascent in the average high-temperature, adjusting from April's 75°F (23.9°C) to a still moderately hot 82°F (27.8°C). Throughout the month of May, Colleyville observes an average nighttime temperature of 64.8°F (18.2°C).Heat index
For most parts of May, the heat index is estimated at a hot 86°F (30°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
The most humid month in Colleyville is May, with an average relative humidity of 71%.Rainfall
The month with the most rainfall in Colleyville is May, when the rain falls for 10.2 days and typically aggregates up to 1.26" (32mm) of precipitation.Snowfall
January, March through December are months without snowfall in Colleyville, Texas.Daylight
In May, the average length of the day is 13h and 52min.On the first day of May in Colleyville, sunrise is at 6:40 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 8:31 pm CDT.
Sunshine
In Colleyville, the average sunshine in May is 8.9h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 7 during May leads to these instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Colleyville, 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 (54.5°F).
- Average low temperature in May: 64.8°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in May
Colleyville, 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 (29.9"Hg).
Average wind speed in May
Colleyville, TX
- Average wind speed in May: 9.1mph
The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity in May
Colleyville, TX
- Average humidity in May: 71%
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).
Average rainfall in May
Colleyville, TX
- Average rainfall in May: 1.26"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is February (0.35").
Average rainfall days in May
Colleyville, TX
- Average rainfall days in May: 10.2 days
The month with the highest number of rainy days is September (11.5 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in May
Colleyville, TX
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Colleyville, 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 April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Colleyville, TX
- 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: 8h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in May
Colleyville, TX
- Average sunshine days in May: 17.6 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is September (16.3 days).
Average UV index in May
Colleyville, 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
Colleyville, TX
- Average cloud cover in May: 35
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in May
Colleyville, 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).
