May weather forecast
Westchester, LA

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Weather in May

May, the last month of the spring in Westchester, is also a moderately hot month, with an average temperature fluctuating between 66°F (18.9°C) and 85.3°F (29.6°C).

Temperature

As May arrives, Westchester's weather shows a minor increase in high-temperatures, edging from April's moderately hot 78.4°F (25.8°C) to a still warm 85.3°F (29.6°C). The nighttime temperature dips to an enjoyable 66°F (18.9°C) on average during May.

Heat index

The heat index in May is estimated at a very hot 95°F (35°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In May, the average relative humidity in Westchester is 76%.

Rainfall

In Westchester, Louisiana, during May, the rain falls for 15.2 days and regularly aggregates up to 3.35" (85mm) of precipitation. Throughout the year, in Westchester, there are 187.5 rainfall days, and 40" (1016mm) of precipitation is accumulated.

Snowfall

In Westchester, snow does not fall in February through November.

Daylight

In Westchester, the average length of the day in May is 13h and 42min.
On the first day of the month, sunrise is at 6:20 am and sunset at 7:42 pm. On the last day of May, sunrise is at 6:02 am and sunset at 8:01 pm CDT.

Sunshine

The average sunshine in May in Westchester is 9.9h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high UV index of 7 in May translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

How hot is it in Westchester in May?

In Westchester, in May, the average high-temperature is 85.3°F (29.6°C), and the average low-temperature is 66°F (18.9°C). In May, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is estimated at 95°F (35°C).

What is the average humidity in May in Westchester?

The average relative humidity in May is 76%.

How much does it rain in Westchester in May?

In Westchester, during May, the rain falls for 15.2 days and regularly aggregates up to 3.35" (85mm) of precipitation.

When it does not snow in Westchester?

In Westchester, snow does not fall in February through November.

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

In May, the average day length in Westchester, Louisiana, is 13h and 42min.

When are sunrise and sunset in May in Westchester?

In May, on the first day of the month, sunrise is at 6:20 am and sunset at 7:42 pm. On the last day of the month, in Westchester, Louisiana, sunrise is at 6:02 am and sunset at 8:01 pm CDT.

How long on average sun shines in May in Westchester?

The average sunshine duration in May in Westchester is 9.9h.

What are the months with the highest UV index in Westchester?

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

What is the UV index reading in May in Westchester?

In May, the average daily maximum UV index in Westchester, Louisiana, is 7. A UV Index of 6 to 7 symbolizes 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
Westchester, LA

Average temperature in May - Westchester, LA
  • Average high temperature in May: 85.3°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in May: 66°F

The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).

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Average pressure in May
Westchester, LA

Average pressure in May - Westchester, LA
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).

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Average wind speed in May
Westchester, LA

Average wind speed in May - Westchester, LA
  • Average wind speed in May: 5.5mph

The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in May
Westchester, LA

Average humidity in May - Westchester, LA
  • Average humidity in May: 76%

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

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Average rainfall in May
Westchester, LA

Average rainfall in May - Westchester, LA
  • Average rainfall in May: 3.35"

The wettest month (with the highest rainfall) is July (5.47").
The driest month (with the least rainfall) is November (1.93").

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Average rainfall days in May
Westchester, LA

Average rainfall days in May - Westchester, LA
  • Average rainfall days in May: 15.2 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (8.9 days).

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Average snowfall in May
Westchester, LA

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

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

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Average snowfall days in May
Westchester, LA

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

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in May / Average sunshine in May - Westchester, LA
  • 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 5min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in May
Westchester, LA

Average sunshine days in May - Westchester, LA
  • Average sunshine days in May: 14.3 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (5.9 days).

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Average UV index in May
Westchester, LA

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

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

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Average cloud cover in May
Westchester, LA

Average cloud cover in May - Westchester, LA
  • Average cloud cover in May: 34

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).

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Average visibility in May
Westchester, LA

Average visibility in May - Westchester, LA
  • Average visibility in May: 5mi

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

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Westchester, Louisiana, USA

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