May weather forecast
Union, MS

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Weather in May

The last month of the spring, May, is also a moderately hot month in Union, Mississippi, with an average temperature ranging between min 62.2°F (16.8°C) and max 82.9°F (28.3°C).

Temperature

A slight uplift in the average high-temperature marks May, adjusting from April's moderately hot 75.7°F (24.3°C) to a still warm 82.9°F (28.3°C). Nighttime temperature in Union experiences an average drop to a refreshing 62.2°F (16.8°C) in May.

Heat index

The heat index in May is computed to be a tropical 89.6°F (32°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
Understanding the heat index involves considering values for shaded locales with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

The average relative humidity in May in Union is 74%.

Rainfall

In Union, Mississippi, during May, the rain falls for 13.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 162.2 rainfall days, and 34.8" (884mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Union.

Daylight

In Union, the average length of the day in May is 13h and 50min.
On the first day of the month, sunrise is at 6:08 am and sunset at 7:38 pm. On the last day of May, sunrise is at 5:49 am and sunset at 7:58 pm CDT.

Sunshine

The average sunshine in May is 9.8h.

UV index

In May, the average daily maximum UV index in Union is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 6 in May translates into these instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in Union in May?

During May, Union experiences an average high-temperature of 82.9°F (28.3°C) and a low-temperature of 62.2°F (16.8°C). In May, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 89.6°F (32°C).

What is the average humidity in May in Union?

In May, the average relative humidity in Union is 74%.

How much does it rain in Union in May?

In Union, Mississippi, in May, it is raining for 13.3 days, with typically 2.36" (60mm) of accumulated precipitation.

When it does not snow in Union?

April through November are months without snowfall in Union, Mississippi.

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

In Union, the average day length in May is 13h and 50min.

When is the sunrise / sunset in May in Union?

In May, on the first day of the month, sunrise is at 6:08 am and sunset at 7:38 pm. On the last day of the month, in Union, Mississippi, sunrise is at 5:49 am and sunset at 7:58 pm CDT.

How long on average sun shines in May in Union?

In May, the average sunshine duration in Union, Mississippi, is 9.8h.

How high is the UV index in May in Union?

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Union, MS

Average temperature in May - Union, MS
  • Average high temperature in May: 82.9°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (53.2°F).

  • Average low temperature in May: 62.2°F

The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (37°F).

Average pressure in May
Union, MS

Average pressure in May - Union, MS
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in May
Union, MS

Average wind speed in May - Union, MS
  • Average wind speed in May: 6.2mph

The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in May
Union, MS

Average humidity in May - Union, MS
  • Average humidity in May: 74%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).

Average rainfall in May
Union, MS

Average rainfall in May - Union, MS
  • Average rainfall in May: 2.36"

The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is November (2.09").

Average rainfall days in May
Union, MS

Average rainfall days in May - Union, MS
  • Average rainfall days in May: 13.3 days

The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (8.6 days).

Average snowfall in May
Union, MS

Average snowfall in May - Union, MS
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in May
Union, MS

Average snowfall days in May - Union, MS
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Union, MS

Average daylight in May / Average sunshine in May - Union, MS
  • 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 6min).

  • Average sunshine in May: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

Average sunshine days in May
Union, MS

Average sunshine days in May - Union, MS
  • Average sunshine days in May: 15.8 days

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in May
Union, MS

Average UV index in May - Union, MS
  • Average UV index in May: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in May
Union, MS

Average cloud cover in May - Union, MS
  • Average cloud cover in May: 35

The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are September and October (Cloud cover 30).

Average visibility in May
Union, MS

Average visibility in May - Union, MS
  • Average visibility in May: 5mi

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

Union, Mississippi, USA

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