August weather forecast
Union, MS

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Weather in August

August, the last month of the summer in Union, is another tropical month, with an average temperature ranging between max 91°F (32.8°C) and min 71.2°F (21.8°C).

Temperature

August notes an average high-temperature of a still hot 91°F (32.8°C), subtly differing from July's 91.4°F (33°C). During August, Union records an average temperature of 71.2°F (21.8°C) at night.

Heat index

August's mean heat index is computed to be a blazing hot 113°F (45°C). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

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

Rainfall

In Union, during August, the rain falls for 18.9 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Union, during the entire year, the rain falls for 162.2 days and collects up to 34.8" (884mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

The average length of the day in August in Union is 13h and 19min.
On the first day of August in Union, sunrise is at 6:11 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:21 pm CDT.

Sunshine

The average sunshine in August in Union is 10.2h.

UV index

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In August, the UV index of 6 transforms into the following advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Union in August?

The high-temperature, in August, in Union, is 91°F (32.8°C), while the low-temperature averages to 71.2°F (21.8°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is computed to be 113°F (45°C).

What is the average humidity in August in Union?

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

How much does it rain in Union in August?

In Union, Mississippi, during August, the rain falls for 18.9 days and regularly aggregates up to 3.19" (81mm) of 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 August in Union?

In August, the average day length in Union, Mississippi, is 13h and 19min.

What time are sunrise and sunset in August in Union?

On the first day of August in Union, sunrise is at 6:11 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:21 pm CDT.

How long on average sun shines in August in Union?

In August, the average sunshine duration is 10.2h.

What is the UV index reading in August in Union?

In August, the average daily maximum UV index 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 August
Union, MS

Average temperature in August - Union, MS
  • Average high temperature in August: 91°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 August: 71.2°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 August
Union, MS

Average pressure in August - Union, MS
  • Average pressure in August: 29.97"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 August
Union, MS

Average wind speed in August - Union, MS
  • Average wind speed in August: 4.9mph

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 August
Union, MS

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

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

Average rainfall in August
Union, MS

Average rainfall in August - Union, MS
  • Average rainfall in August: 3.19"

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 August
Union, MS

Average rainfall days in August - Union, MS
  • Average rainfall days in August: 18.9 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 August
Union, MS

Average snowfall in August - Union, MS
  • Average snowfall in August: 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 August
Union, MS

Average snowfall days in August - Union, MS
  • Average snowfall days in August: 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 August /
Average sunshine in August
Union, MS

Average daylight in August / Average sunshine in August - Union, MS
  • Average daylight in August: 13h and 2min

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 August: 10h and 1min

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 August
Union, MS

Average sunshine days in August - Union, MS
  • Average sunshine days in August: 10.4 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 August
Union, MS

Average UV index in August - Union, MS
  • Average UV index in August: 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 August
Union, MS

Average cloud cover in August - Union, MS
  • Average cloud cover in August: 33

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 August
Union, MS

Average visibility in August - Union, MS
  • Average visibility in August: 6mi

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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