May weather forecast
Grand River, LA

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Weather in May

The last month of the spring, May, is also a moderately hot month in Grand River, Louisiana, with an average temperature fluctuating between 85.3°F (29.6°C) and 66.4°F (19.1°C).

Temperature

With the onset of May, Grand River's average high-temperature sees a modest rise, moving from April's 78.4°F (25.8°C) to a still warm 85.3°F (29.6°C). During May, the average low-temperature is recorded at a comfortable 66.4°F (19.1°C).

Heat index

May's average heat index is evaluated at a torrid 96.8°F (36°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. 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 babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in May in Grand River is 77%.

Rainfall

In Grand River, during May, the rain falls for 12.1 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Grand River, during the entire year, the rain falls for 148.6 days and collects up to 15.51" (394mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

The average length of the day in May in Grand River is 13h and 41min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:43 pm. On the last day of May, sunrise is at 6:04 am and sunset at 8:02 pm CDT.

Sunshine

The average sunshine in May is 10h.

UV index

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in May interprets into the following advice:
Shun overexposure. Protection from sun ravages is indispensable. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

How hot is May in Grand River?

An average high-temperature, in May, in Grand River, is 85.3°F (29.6°C) and the average low-temperature is 66.4°F (19.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in May is evaluated at 96.8°F (36°C).

What is the average humidity in May in Grand River?

In Grand River, the average relative humidity in May is 77%.

How many days does it rain in May in Grand River?

In Grand River, during May, the rain falls for 12.1 days and regularly aggregates up to 1.3" (33mm) of precipitation.

When it does not snow in Grand River?

In Grand River, snow does not fall in February through December.

How many hours of daylight does Grand River have in May?

The average day length in May in Grand River is 13h and 41min.

When is the sunrise / sunset in May in Grand River?

On the first day of May in Grand River, sunrise is at 6:21 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:02 pm CDT.

How many hours of sunshine does Grand River have in May?

In May, the average sunshine duration is 10h.

What is the UV index intensity in May in Grand River?

The average daily maximum UV index in May in Grand River is 6. 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
Grand River, LA

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

The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in May: 66.4°F

The month with the highest average low temperature is August (74.5°F).
The coldest month (with the lowest average low temperature) is January (43.5°F).

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Average pressure in May
Grand River, LA

Average pressure in May - Grand River, 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
Grand River, LA

Average wind speed in May - Grand River, LA
  • Average wind speed in May: 5.6mph

The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in May
Grand River, LA

Average humidity in May - Grand River, LA
  • Average humidity in May: 77%

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
Grand River, LA

Average rainfall in May - Grand River, LA
  • Average rainfall in May: 1.3"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is March (0.67").

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Average rainfall days in May
Grand River, LA

Average rainfall days in May - Grand River, LA
  • Average rainfall days in May: 12.1 days

The month with the highest number of rainy days is August (20.9 days).
The month with the least rainy days is November (7.1 days).

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Average snowfall in May
Grand River, LA

Average snowfall in May - Grand River, LA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.08").
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
Grand River, LA

Average snowfall days in May - Grand River, 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, November and December (0 days).

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Average daylight in May /
Average sunshine in May
Grand River, LA

Average daylight in May / Average sunshine in May - Grand River, 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: 10h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in May
Grand River, LA

Average sunshine days in May - Grand River, LA
  • Average sunshine days in May: 16.2 days

The month with the most sunshine days is November (21.4 days).
The months with the least sunshine days are July and August (7.3 days).

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Average UV index in May
Grand River, LA

Average UV index in May - Grand River, LA
  • Average UV index in May: 6

The months with the highest UV index are 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
Grand River, LA

Average cloud cover in May - Grand River, LA
  • Average cloud cover in May: 33

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 27).

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Average visibility in May
Grand River, LA

Average visibility in May - Grand River, LA
  • Average visibility in May: 5mi

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

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Grand River, Louisiana, USA

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