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
Altair's May weather indicates a minor increase in high-temperatures, edging from April's moderately hot 78.3°F (25.7°C) to a still warm 84.7°F (29.3°C). Altair observes an average nighttime temperature of 67.5°F (19.7°C) during May.Heat index
May's mean heat index is estimated at a very hot 95°F (35°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
February, March, May and June, with an average relative humidity of 78%, are the most humid months.Rainfall
May is the month with the most rainfall. Rain falls for 15.8 days and accumulates 4.13" (105mm) of precipitation.Snowfall
In Altair, snow does not fall in March through November.Daylight
The average length of the day in May is 13h and 39min.On the first day of May, sunrise is at 6:42 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:21 pm CDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
In Altair, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is May?
What is the most humid month?
What is the average humidity in May?
What is the wettest month?
How many days does it rain in May in Altair?
When it does not snow in Altair?
How many hours of daylight does Altair have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Altair, TX
- Average high temperature in May: 84.7°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (61°F).
- Average low temperature in May: 67.5°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (45°F).
Average pressure in May
Altair, TX
- Average pressure in May: 29.94"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
Altair, TX
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is September (5.8mph).
Average humidity in May
Altair, TX
- Average humidity in May: 78%
The months with the highest relative humidity are February, March, May and June (78%).
The month with the lowest relative humidity is August (71%).
Average rainfall in May
Altair, TX
- Average rainfall in May: 4.13"
The wettest month (with the highest rainfall) is May (4.13").
The driest months (with the least rainfall) are January and February (1.46").
Average rainfall days in May
Altair, TX
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is September (19 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in May
Altair, TX
- Average snowfall in May: 0"
The months with the highest snowfall are January and December (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Altair, TX
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Altair, TX
- Average daylight in May: 13h and 4min
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 3min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in May
Altair, TX
- Average sunshine days in May: 12.7 days
The month with the most sunshine days is January (19.4 days).
The month with the least sunshine days is September (8.8 days).
Average UV index in May
Altair, TX
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Altair, TX
- Average cloud cover in May: 45
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Altair, TX
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, August, September, October, November and December (6mi).
The months with the lowest visibility are May, June and July (5mi).
Altair, Texas, USA
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