May weather forecast
Kirby, TX

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Weather in May

May, the last month of the spring in Kirby, is another warm month, with an average temperature varying between 66.7°F (19.3°C) and 85.1°F (29.5°C).

Temperature

May witnesses a minor rise in the average high-temperature, transitioning from 79°F (26.1°C) in April to a still moderately hot 85.1°F (29.5°C). In the month of May, Kirby experiences an average low-temperature of 66.7°F (19.3°C).

Heat index

For May, the heat index is estimated at a torrid 95°F (35°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

With an average relative humidity of 73%, May is the most humid month.

Rainfall

May is the month with the most rainfall. Rain falls for 18 days and accumulates 3.78" (96mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

The average length of the day in May is 13h and 38min.
On the first day of the month, sunrise is at 6:50 am and sunset at 8:10 pm. On the last day of May, sunrise is at 6:34 am and sunset at 8:28 pm CDT.

Sunshine

In May, the average sunshine is 7.8h.

UV index

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in May leads to these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in May?

In May, the average high-temperature and low-temperature are 85.1°F (29.5°C) and 66.7°F (19.3°C) respectively. In May, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 95°F (35°C).

What is the most humid month in Kirby?

May is the most humid month, with an average relative humidity of 73%.

What is the average humidity in May in Kirby?

The average relative humidity in May is 73%.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 18 days and accumulates 3.78" (96mm) of precipitation.

How many days does it rain in May in Kirby?

In Kirby, Texas, in May, it is raining for 18 days, with typically 3.78" (96mm) of accumulated precipitation.

When it does not snow?

March through December are months without snowfall.

What is the average length of the day in May?

In Kirby, the average day length in May is 13h and 38min.

When is the sunrise / sunset in May in Kirby?

On the first day of May, sunrise is at 6:50 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 8:28 pm CDT.

How many hours of sunshine does Kirby have in May?

The average sunshine duration in May is 7.8h.

What is the UV index reading in May?

The average daily maximum UV index in May in Kirby is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Kirby, TX

Average temperature in May - Kirby, TX
  • Average high temperature in May: 85.1°F

The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (61.2°F).

  • Average low temperature in May: 66.7°F

The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

Average pressure in May
Kirby, TX

Average pressure in May - Kirby, TX
  • Average pressure in May: 29.9"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in May
Kirby, TX

Average wind speed in May - Kirby, TX
  • Average wind speed in May: 8.8mph

The windiest months (with the highest average wind speed) are February, March, April and May (8.8mph).
The calmest month (with the lowest average wind speed) is September (6.4mph).

Average humidity in May
Kirby, TX

Average humidity in May - Kirby, 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 (59%).

Average rainfall in May
Kirby, TX

Average rainfall in May - Kirby, TX
  • Average rainfall in May: 3.78"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.94").

Average rainfall days in May
Kirby, TX

Average rainfall days in May - Kirby, TX
  • Average rainfall days in May: 18 days

The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and August (9.3 days).

Average snowfall in May
Kirby, TX

Average snowfall in May - Kirby, TX
  • Average snowfall in May: 0"

The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in May
Kirby, TX

Average snowfall days in May - Kirby, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.4 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
Kirby, TX

Average daylight in May / Average sunshine in May - Kirby, 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: 7h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in May
Kirby, TX

Average sunshine days in May - Kirby, TX
  • Average sunshine days in May: 10.2 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (10.2 days).

Average UV index in May
Kirby, TX

Average UV index in May - Kirby, 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
Kirby, TX

Average cloud cover in May - Kirby, TX
  • Average cloud cover in May: 48

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in May
Kirby, TX

Average visibility in May - Kirby, 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).

Kirby, Texas, USA

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