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
A subtle rise in the average high-temperature is observed during May, adjusting from 74.8°F (23.8°C) in April to a still warm 81.9°F (27.7°C). Keller in May anticipates an average nighttime temperature of 63.9°F (17.7°C).Heat index
The heat index in May is evaluated at a hot 86°F (30°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
May is the most humid month, with an average relative humidity of 73%.Rainfall
The month with the most rainfall is May, when the rain falls for 11.9 days and typically aggregates up to 2.09" (53mm) of precipitation.Snowfall
In Keller, snow does not fall in January, April through November.Daylight
In Keller, the average length of the day in May is 13h and 52min.On the first day of May, sunrise is at 6:40 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 8:32 pm CDT.
Sunshine
In Keller, the average sunshine in May is 8.9h.UV index
In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full 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
What are the temperatures in May?
What is the most humid month?
What is the average humidity in May in Keller?
What is the wettest month?
How many days does it rain in May?
When it does not snow?
How many hours of daylight does Keller have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Keller have in May?
What is the UV index reading in May?
Average temperature in May
Keller, 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 (54.5°F).
- Average low temperature in May: 63.9°F
The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).
Average pressure in May
Keller, TX
- Average pressure in May: 29.91"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
Keller, TX
- Average wind speed in May: 9.3mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in May
Keller, 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 (55%).
Average rainfall in May
Keller, TX
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is December (0.55").
Average rainfall days in May
Keller, TX
- Average rainfall days in May: 11.9 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is January (4 days).
Average snowfall in May
Keller, TX
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Keller, TX
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Keller, TX
- Average daylight in May: 13h and 5min
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 5min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in May
Keller, TX
- Average sunshine days in May: 15.9 days
The month with the most sunshine days is January (26.2 days).
The month with the least sunshine days is May (15.9 days).
Average UV index in May
Keller, 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
Keller, TX
- Average cloud cover in May: 35
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in May
Keller, 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).
Keller, Texas, USA
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