May weather forecast
Terrytown, LA

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Weather in May

The last month of the spring, May, is also a moderately hot month in Terrytown, Louisiana, with an average temperature varying between 71.2°F (21.8°C) and 82.9°F (28.3°C).

Temperature

A subtle rise in the average high-temperature is observed during May, adjusting from 77°F (25°C) in April to a still warm 82.9°F (28.3°C). During the nights in May, an average low-temperature of 71.2°F (21.8°C) is observed.

Heat index

May's heat index is calculated to be a hot 89.6°F (32°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.

Humidity

In Terrytown, the average relative humidity in May is 73%.

Rainfall

In Terrytown, in May, it is raining for 8.6 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, in Terrytown, there are 112.1 rainfall days, and 9.37" (238mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall.

Daylight

In May, the average length of the day in Terrytown is 13h and 40min.
On the first day of May, sunrise is at 6:16 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 7:56 pm CDT.

Sunshine

In Terrytown, the average sunshine in May is 10.6h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 7 in May translates into the following instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during May?

The high-temperature during May is 82.9°F (28.3°C) and the low-temperature is 71.2°F (21.8°C). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in May?

In May, the average relative humidity is 73%.

How many days does it rain in May?

In Terrytown, during May, the rain falls for 8.6 days and regularly aggregates up to 0.75" (19mm) of precipitation.

When it does not snow?

In Terrytown, snow does not fall in February through December.

How many hours of daylight does Terrytown have in May?

In May, the average day length is 13h and 40min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:16 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 7:56 pm CDT.

How many hours of sunshine does Terrytown have in May?

In Terrytown, the average sunshine duration in May is 10.6h.

When is the highest UV index?

The months with the highest UV index are May through September, with an average maximum UV index of 7.

How high is the UV index in May?

In Terrytown, Louisiana, the average daily maximum UV index in May is 7. A UV Index 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 days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Terrytown, LA

Average temperature in May - Terrytown, LA
  • Average high temperature in May: 82.9°F

The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in May: 71.2°F

The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).

Average pressure in May
Terrytown, LA

Average pressure in May - Terrytown, LA
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).

Average wind speed in May
Terrytown, LA

Average wind speed in May - Terrytown, LA
  • Average wind speed in May: 8.2mph

The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in May
Terrytown, LA

Average humidity in May - Terrytown, LA
  • Average humidity in May: 73%

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Terrytown, LA

Average rainfall in May - Terrytown, LA
  • Average rainfall in May: 0.75"

The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").

Average rainfall days in May
Terrytown, LA

Average rainfall days in May - Terrytown, LA
  • Average rainfall days in May: 8.6 days

The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).

Average snowfall days in May
Terrytown, LA

Average snowfall days in May - Terrytown, LA
  • 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).

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

Average daylight in May / Average sunshine in May - Terrytown, LA
  • 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: 10h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in May
Terrytown, LA

Average sunshine days in May - Terrytown, LA
  • Average sunshine days in May: 19.3 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).

Average UV index in May
Terrytown, LA

Average UV index in May - Terrytown, LA
  • Average UV index in May: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in May
Terrytown, LA

Average cloud cover in May - Terrytown, LA
  • Average cloud cover in May: 26

The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).

Average visibility in May
Terrytown, LA

Average visibility in May - Terrytown, LA
  • 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).

Terrytown, Louisiana, USA

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