August weather forecast
Roy, MS

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Weather in August

The last month of the summer, August, is another hot month in Roy, Mississippi, with an average temperature varying between 91.4°F (33°C) and 71.8°F (22.1°C).

Temperature

The initiation of August records an average high-temperature of a still hot 91.4°F (33°C), displaying a near consistency with the previous month. August witnesses an average nighttime temperature of 71.8°F (22.1°C).

Heat index

During August, the heat index is estimated at a blazing hot 113°F (45°C). Stay watchful: Heat exhaustion along with heat cramps are likely. Ongoing effort may cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

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

Rainfall

In Roy, in August, it is raining for 19.9 days, with typically 3.58" (91mm) of accumulated precipitation. Throughout the year, there are 165.6 rainfall days, and 36.06" (916mm) of precipitation is accumulated.

Snowfall

In Roy, snow does not fall in April through November.

Daylight

In August, the average length of the day is 13h and 17min.
On the first day of the month, sunrise is at 6:10 am and sunset at 7:51 pm. On the last day of August, in Roy, sunrise is at 6:29 am and sunset at 7:19 pm CDT.

Sunshine

In Roy, the average sunshine in August is 10.2h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

How hot is it in Roy in August?

The high-temperature in Roy, Mississippi, during August is 91.4°F (33°C) and the low-temperature is 71.8°F (22.1°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 113°F (45°C).

What is the average humidity in August in Roy?

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

How many days does it rain in August in Roy?

In Roy, Mississippi, in August, it is raining for 19.9 days, with typically 3.58" (91mm) of accumulated precipitation.

When it does not snow in Roy?

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

What is the average length of the day in August in Roy?

The average day length in August in Roy, Mississippi, is 13h and 17min.

When is the sunrise / sunset in August in Roy?

On the first day of August, sunrise is at 6:10 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:19 pm CDT.

How many hours of sunshine does Roy have in August?

In August, the average sunshine duration in Roy is 10.2h.

When is the highest UV index in Roy?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Roy.

What is the UV index reading in August in Roy?

In August, the average daily maximum UV index in Roy is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.
Average max. wind speed
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
Roy, MS

Average temperature in August - Roy, MS
  • Average high temperature in August: 91.4°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (55°F).

  • Average low temperature in August: 71.8°F

The months with the highest average low temperature are July and August (71.8°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).

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Average pressure in August
Roy, MS

Average pressure in August - Roy, 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).

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Average wind speed in August
Roy, MS

Average wind speed in August - Roy, MS
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

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Average humidity in August
Roy, MS

Average humidity in August - Roy, 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 (71%).

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Average rainfall in August
Roy, MS

Average rainfall in August - Roy, MS
  • Average rainfall in August: 3.58"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is November (2.09").

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Average rainfall days in August
Roy, MS

Average rainfall days in August - Roy, MS
  • Average rainfall days in August: 19.9 days

The month with the highest number of rainy days is July (21.7 days).
The month with the least rainy days is November (8 days).

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Average snowfall in August
Roy, MS

Average snowfall in August - Roy, MS
  • Average snowfall in August: 0"

The month with the highest snowfall is December (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in August
Roy, MS

Average snowfall days in August - Roy, MS
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and December (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Roy, MS

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

The month with the longest days is June (Average daylight: 14h and 12min).
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 month with the least sunshine is December (Average sunshine: 4h and 48min).

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Average sunshine days in August
Roy, MS

Average sunshine days in August - Roy, MS
  • Average sunshine days in August: 8.9 days

The months with the most sunshine days are October and November (20.4 days).
The month with the least sunshine days is July (7.5 days).

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Average UV index in August
Roy, MS

Average UV index in August - Roy, MS
  • Average UV index in August: 7

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 2).

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Average cloud cover in August
Roy, MS

Average cloud cover in August - Roy, MS
  • Average cloud cover in August: 34

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 31).

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Average visibility in August
Roy, MS

Average visibility in August - Roy, MS
  • Average visibility in August: 5mi

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

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Roy, Mississippi, USA

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