May weather forecast
South Alamo, TX

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Weather in May

The last month of the spring, May, is another hot month in South Alamo, Texas, with an average temperature fluctuating between 72.9°F (22.7°C) and 91.8°F (33.2°C).

Temperature

South Alamo's transition from April to May introduces an average high-temperature of a still hot 91.8°F (33.2°C), marking an insignificant variation from the 88.3°F (31.3°C). Nighttime temperatures hover around an average low of 72.9°F (22.7°C) in May.

Heat index

In May, the heat index is estimated at a scorching 111.2°F (44°C). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Realize that the values for the heat index are set for shaded places and light winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. 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 remain especially vital for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

May is the most humid month in South Alamo, with an average relative humidity of 69%.

Rainfall

In South Alamo, in May, it is raining for 8 days, with typically 0.98" (25mm) of accumulated precipitation. In South Alamo, Texas, during the entire year, the rain falls for 94.1 days and collects up to 9.06" (230mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In May, the average length of the day in South Alamo is 13h and 26min.
On the first day of May, sunrise is at 6:54 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 8:20 pm CDT.

Sunshine

The average sunshine in May in South Alamo is 10h.

UV index

In South Alamo, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 7 in May, converts into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

How hot does it get in South Alamo in May?

In May, in South Alamo, the average high-temperature is 91.8°F (33.2°C), and the average low-temperature is 72.9°F (22.7°C). In May, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is estimated at 111.2°F (44°C).

What is the most humid month in South Alamo?

With an average relative humidity of 69%, May is the most humid month in South Alamo, Texas.

What is the average humidity in May in South Alamo?

The average relative humidity in May in South Alamo is 69%.

How much does it rain in South Alamo in May?

In May, the rain falls for 8 days. Throughout May, 0.98" (25mm) of precipitation is accumulated.

When it does not snow in South Alamo?

February through December are months without snowfall.

What is the average length of the day in May in South Alamo?

In May, the average day length in South Alamo, Texas, is 13h and 26min.

When is the sunrise / sunset in May in South Alamo?

On the first day of May in South Alamo, Texas, sunrise is at 6:54 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 8:20 pm CDT.

How long on average sun shines in May in South Alamo?

In South Alamo, Texas, the average sunshine duration in May is 10h.

How high is the UV index in May in South Alamo?

In South Alamo, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
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
South Alamo, TX

Average temperature in May - South Alamo, TX
  • Average high temperature in May: 91.8°F

The warmest month (with the highest average high temperature) is August (98.2°F).
The month with the lowest average high temperature is January (69.6°F).

  • Average low temperature in May: 72.9°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (53.4°F).

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Average pressure in May
South Alamo, TX

Average pressure in May - South Alamo, TX
  • Average pressure in May: 29.87"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).

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Average wind speed in May
South Alamo, TX

Average wind speed in May - South Alamo, TX
  • Average wind speed in May: 12.4mph

The windiest month (with the highest average wind speed) is May (12.4mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).

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Average humidity in May
South Alamo, TX

Average humidity in May - South Alamo, TX
  • Average humidity in May: 69%

The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (59%).

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Average rainfall in May
South Alamo, TX

Average rainfall in May - South Alamo, TX
  • Average rainfall in May: 0.98"

The wettest month (with the highest rainfall) is September (1.46").
The driest months (with the least rainfall) are January and February (0.31").

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Average rainfall days in May
South Alamo, TX

Average rainfall days in May - South Alamo, TX
  • Average rainfall days in May: 8 days

The month with the highest number of rainy days is September (15.1 days).
The month with the least rainy days is February (5.4 days).

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Average snowfall in May
South Alamo, TX

Average snowfall in May - South Alamo, TX
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
South Alamo, TX

Average snowfall days in May - South Alamo, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in May /
Average sunshine in May
South Alamo, TX

Average daylight in May / Average sunshine in May - South Alamo, TX
  • Average daylight in May: 13h and 2min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in May: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in May
South Alamo, TX

Average sunshine days in May - South Alamo, TX
  • Average sunshine days in May: 20.5 days

The month with the most sunshine days is July (23 days).
The month with the least sunshine days is September (12.5 days).

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Average UV index in May
South Alamo, TX

Average UV index in May - South Alamo, TX
  • Average UV index in May: 7

The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in May
South Alamo, TX

Average cloud cover in May - South Alamo, TX
  • Average cloud cover in May: 32

The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 18).

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Average visibility in May
South Alamo, TX

Average visibility in May - South Alamo, 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).

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South Alamo, Texas, USA

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