May weather forecastMertens, TX
May
Weather in May
May, the last month of the spring in Mertens, is also a moderately hot month, with temperature in the range of an average low of 63.7°F (17.6°C) and an average high of 81.3°F (27.4°C).Temperature
In Mertens, the average high-temperature in May slightly increases from a moderately hot 74.7°F (23.7°C) in April to a still warm 81.3°F (27.4°C). Throughout May, the temperature tends to fall to a consistent average low of 63.7°F (17.6°C).Heat index
The average heat index in May is evaluated at a hot 86°F (30°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. 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 particularly relevant to children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
May is the most humid month, with an average relative humidity of 76%.Rainfall
In Mertens, Texas, in May, during 15.6 rainfall days, 3.98" (101mm) of precipitation is typically accumulated. In Mertens, during the entire year, the rain falls for 146.4 days and collects up to 32.72" (831mm) of precipitation.Snowfall
April through November are months without snowfall in Mertens.Daylight
In Mertens, Texas, the average length of the day in May is 13h and 49min.On the first day of May, sunrise is at 6:40 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 8:28 pm CDT.
Sunshine
In Mertens, the average sunshine in May is 8.6h.UV index
In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 in May translates into these instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Mertens, TX
- Average high temperature in May: 81.3°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 (55.8°F).
- Average low temperature in May: 63.7°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in May
Mertens, TX
- Average pressure in May: 29.93"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
Mertens, TX
- Average wind speed in May: 9mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in May
Mertens, TX
- Average humidity in May: 76%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (58%).
Average rainfall in May
Mertens, TX
- Average rainfall in May: 3.98"
The wettest month (with the highest rainfall) is October (4.57").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days in May
Mertens, TX
- Average rainfall days in May: 15.6 days
The months with the highest number of rainy days are May and September (15.6 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in May
Mertens, TX
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Mertens, 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, October and November (0 days).
Average daylight in May /
Average sunshine in May
Mertens, TX
- Average daylight in May: 13h and 48min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in May: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in May
Mertens, TX
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is September (13.2 days).
Average UV index in May
Mertens, 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
Mertens, TX
- Average cloud cover in May: 38
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in May
Mertens, 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).
