May weather forecast
Donaldsonville, LA

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Weather in May

May, the last month of the spring in Donaldsonville, is another warm month, with temperature in the range of an average high of 84.7°F (29.3°C) and an average low of 66.2°F (19°C).

Temperature

Donaldsonville observes a slight ascent in average high-temperatures during May, adjusting from 78.6°F (25.9°C) in April to a still moderately hot 84.7°F (29.3°C). Donaldsonville encounters a steady low-temperature average of 66.2°F (19°C) throughout the month of May.

Heat index

The heat index in May is appraised at a fiery hot 95°F (35°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in May is 77%.

Rainfall

In Donaldsonville, during May, the rain falls for 13.5 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Donaldsonville, during the entire year, the rain falls for 165.4 days and collects up to 26.93" (684mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In May, the average length of the day is 13h and 41min.
On the first day of May, sunrise is at 6:20 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:00 pm CDT.

Sunshine

In Donaldsonville, the average sunshine in May is 9.8h.

UV index

In Donaldsonville, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 6 in May translates into this advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

How hot does it get in Donaldsonville in May?

The high-temperature in Donaldsonville, Louisiana, during May is 84.7°F (29.3°C) and the low-temperature is 66.2°F (19°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in May is appraised at 95°F (35°C).

What is the average humidity in May in Donaldsonville?

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

How many days does it rain in May in Donaldsonville?

In Donaldsonville, during May, the rain falls for 13.5 days and regularly aggregates up to 2.44" (62mm) of precipitation.

When it does not snow in Donaldsonville?

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

How many hours of daylight does Donaldsonville have in May?

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

When are sunrise and sunset in May in Donaldsonville?

In May, on the first day of the month, sunrise is at 6:20 am and sunset at 7:41 pm. On the last day of the month, in Donaldsonville, Louisiana, sunrise is at 6:03 am and sunset at 8:00 pm CDT.

How many hours of sunshine does Donaldsonville have in May?

In May, the average sunshine duration is 9.8h.

What is the UV index reading in May in Donaldsonville?

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

Average temperature in May - Donaldsonville, LA
  • Average high temperature in May: 84.7°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (60.1°F).

  • Average low temperature in May: 66.2°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in May
Donaldsonville, LA

Average pressure in May - Donaldsonville, 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 and August (29.96"Hg).

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Average wind speed in May
Donaldsonville, LA

Average wind speed in May - Donaldsonville, LA
  • Average wind speed in May: 6mph

The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in May
Donaldsonville, LA

Average humidity in May - Donaldsonville, LA
  • Average humidity in May: 77%

The months with the highest relative humidity are February, September and December (80%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in May
Donaldsonville, LA

Average rainfall in May - Donaldsonville, LA
  • Average rainfall in May: 2.44"

The wettest month (with the highest rainfall) is July (4.25").
The driest month (with the least rainfall) is November (1.18").

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Average rainfall days in May
Donaldsonville, LA

Average rainfall days in May - Donaldsonville, LA
  • Average rainfall days in May: 13.5 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.1 days).

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Average snowfall in May
Donaldsonville, LA

Average snowfall in May - Donaldsonville, LA
  • 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").

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Average snowfall days in May
Donaldsonville, LA

Average snowfall days in May - Donaldsonville, LA
  • 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 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
Donaldsonville, LA

Average daylight in May / Average sunshine in May - Donaldsonville, 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
Donaldsonville, LA

Average sunshine days in May - Donaldsonville, LA
  • Average sunshine days in May: 15 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (7.3 days).

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Average UV index in May
Donaldsonville, LA

Average UV index in May - Donaldsonville, 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
Donaldsonville, LA

Average cloud cover in May - Donaldsonville, LA
  • Average cloud cover in May: 33

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
Donaldsonville, LA

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

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

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Donaldsonville, Louisiana, USA

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