May weather forecast
Cullen, LA

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Weather in May

The last month of the spring, May, is also a moderately hot month in Cullen, Louisiana, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 62.8°F (17.1°C).

Temperature

As May arrives, a slight rise in the average high-temperature is observed, moving from a warm 75.2°F (24°C) in April to a still moderately hot 83.8°F (28.8°C). In May, Cullen encounters an average low-temperature of 62.8°F (17.1°C) during the night.

Heat index

In May, the heat index is appraised at a tropical 91.4°F (33°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In May, the average relative humidity is 75%.

Rainfall

In Cullen, in May, during 14.2 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Cullen, during the entire year, the rain falls for 149.9 days and collects up to 36.1" (917mm) of precipitation.

Snowfall

In Cullen, snow does not fall in April through December.

Daylight

The average length of the day in May is 13h and 52min.
On the first day of the month, sunrise is at 6:25 am and sunset at 7:56 pm. On the last day of May, sunrise is at 6:06 am and sunset at 8:17 pm CDT.

Sunshine

In May, the average sunshine in Cullen is 9h.

UV index

In May, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the UV index of 6 transforms into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

How hot is May in Cullen?

In May, in Cullen, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 62.8°F (17.1°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in May is appraised at 91.4°F (33°C).

What is the average humidity in May in Cullen?

In Cullen, the average relative humidity in May is 75%.

How much does it rain in Cullen in May?

In Cullen, during May, the rain falls for 14.2 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When it does not snow in Cullen?

April through December are months without snowfall in Cullen.

What is the average length of the day in May in Cullen?

In Cullen, the average day length in May is 13h and 52min.

When are sunrise and sunset in May in Cullen?

On the first day of May in Cullen, sunrise is at 6:25 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:17 pm CDT.

How long on average sun shines in May in Cullen?

In May, the average sunshine duration in Cullen is 9h.

How high is the UV index in May in Cullen?

In Cullen, Louisiana, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Cullen, LA

Average temperature in May - Cullen, LA
  • Average high temperature in May: 83.8°F

The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is January (53.2°F).

  • Average low temperature in May: 62.8°F

The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).

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Average pressure in May
Cullen, LA

Average pressure in May - Cullen, LA
  • Average pressure in May: 29.96"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).

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Average wind speed in May
Cullen, LA

Average wind speed in May - Cullen, LA
  • Average wind speed in May: 6.4mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in May
Cullen, LA

Average humidity in May - Cullen, LA
  • Average humidity in May: 75%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (68%).

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Average rainfall in May
Cullen, LA

Average rainfall in May - Cullen, LA
  • Average rainfall in May: 2.91"

The wettest month (with the highest rainfall) is April (4.65").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in May
Cullen, LA

Average rainfall days in May - Cullen, LA
  • Average rainfall days in May: 14.2 days

The month with the highest number of rainy days is July (14.3 days).
The months with the least rainy days are October and November (10.1 days).

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Average snowfall in May
Cullen, LA

Average snowfall in May - Cullen, LA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Cullen, LA

Average snowfall days in May - Cullen, LA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Cullen, LA

Average daylight in May / Average sunshine in May - Cullen, LA
  • 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: 9h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in May
Cullen, LA

Average sunshine days in May - Cullen, LA
  • Average sunshine days in May: 14.6 days

The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is February (13.5 days).

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Average UV index in May
Cullen, LA

Average UV index in May - Cullen, LA
  • 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, February, November and December (UV index 3).

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Average cloud cover in May
Cullen, LA

Average cloud cover in May - Cullen, LA
  • Average cloud cover in May: 38

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in May
Cullen, LA

Average visibility in May - Cullen, LA
  • Average visibility in May: 6mi

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

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Cullen, Louisiana, USA

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