May weather forecast
Sour Lake, TX

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Weather in May

May, the last month of the spring in Sour Lake, is also a moderately hot month, with an average temperature ranging between max 85.5°F (29.7°C) and min 67.6°F (19.8°C).

Temperature

The shift from April to May sees a slight increase in the average high-temperature, transitioning from 78.4°F (25.8°C) to a still warm 85.5°F (29.7°C). Sour Lake records a steady low-temperature average of 67.6°F (19.8°C) during May.

Heat index

Throughout May, the heat index is evaluated at a sweltering 96.8°F (36°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in May is 76%.

Rainfall

May is the month with the most rainfall. Rain falls for 13.2 days and accumulates 4.21" (107mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

The average length of the day in May is 13h and 41min.
On the first day of May, sunrise is at 6:33 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 8:14 pm CDT.

Sunshine

The average sunshine in May is 9.6h.

UV index

The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 6 in May translates into this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during May?

The high-temperature in Sour Lake during May is 85.5°F (29.7°C) and the low-temperature is 67.6°F (19.8°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in May is evaluated at 96.8°F (36°C).

What is the average humidity in May?

In May, the average relative humidity is 76%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 13.2 days and accumulates 4.21" (107mm) of precipitation.

How many days does it rain in May?

In Sour Lake, during May, the rain falls for 13.2 days and regularly aggregates up to 4.21" (107mm) of precipitation.

When it does not snow?

In Sour Lake, snow does not fall in February through December.

What is the average length of the day in May?

In May, the average day length is 13h and 41min.

What time are sunrise and sunset in May in Sour Lake?

In May, on the first day of the month, sunrise is at 6:33 am and sunset at 7:55 pm. On the last day of the month, in Sour Lake, sunrise is at 6:16 am and sunset at 8:14 pm CDT.

How long on average sun shines in May?

The average sunshine duration in May is 9.6h.

How high is the UV index in May?

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health threat from 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
Sour Lake, TX

Average temperature in May - Sour Lake, TX
  • Average high temperature in May: 85.5°F

The warmest month (with the highest average high temperature) is August (93.2°F).
The month with the lowest average high temperature is January (59.5°F).

  • Average low temperature in May: 67.6°F

The month with the highest average low temperature is July (75.6°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

Average pressure in May
Sour Lake, TX

Average pressure in May - Sour Lake, TX
  • Average pressure in May: 29.95"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
Sour Lake, TX

Average wind speed in May - Sour Lake, TX
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).

Average humidity in May
Sour Lake, TX

Average humidity in May - Sour Lake, TX
  • Average humidity in May: 76%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).

Average rainfall in May
Sour Lake, TX

Average rainfall in May - Sour Lake, TX
  • Average rainfall in May: 4.21"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (2.05").

Average rainfall days in May
Sour Lake, TX

Average rainfall days in May - Sour Lake, TX
  • Average rainfall days in May: 13.2 days

The month with the highest number of rainy days is August (17.8 days).
The months with the least rainy days are January and November (12.3 days).

Average snowfall in May
Sour Lake, TX

Average snowfall in May - Sour Lake, TX
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in May
Sour Lake, TX

Average snowfall days in May - Sour Lake, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in May /
Average sunshine in May
Sour Lake, TX

Average daylight in May / Average sunshine in May - Sour Lake, TX
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in May: 9h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in May
Sour Lake, TX

Average sunshine days in May - Sour Lake, TX
  • Average sunshine days in May: 14.4 days

The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are February and June (11.1 days).

Average UV index in May
Sour Lake, TX

Average UV index in May - Sour Lake, 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
Sour Lake, TX

Average cloud cover in May - Sour Lake, TX
  • Average cloud cover in May: 37

The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are August and October (Cloud cover 29).

Average visibility in May
Sour Lake, TX

Average visibility in May - Sour Lake, TX
  • Average visibility in May: 6mi

The months with the highest visibility are January, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are February, March, April and September (5mi).

Sour Lake, Texas, USA

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