July weather forecast
Roy, MS

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Weather in July

July, like June, is another tropical summer month in Roy, Mississippi, with an average temperature varying between 71.8°F (22.1°C) and 91.9°F (33.3°C).

Temperature

Roy's warmest temperatures are experienced in July, with average high temperatures of 91.9°F (33.3°C) and lows of 71.8°F (22.1°C).

Heat index

July's mean heat index is appraised at a burning hot 116.6°F (47°C). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Know that the heat index computations account for shaded terrains and slight winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. 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 body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In July, the average relative humidity is 75%.

Rainfall

In Roy, during July, the rain falls for 21.7 days and regularly aggregates up to 3.74" (95mm) of precipitation. Throughout the year, there are 165.6 rainfall days, and 36.06" (916mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall.

Daylight

In July, the average length of the day is 14h and 1min.
On the first day of July, sunrise is at 5:52 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:52 pm CDT.

Sunshine

In Roy, the average sunshine in July is 10.3h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Roy, Mississippi. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 7 during July translates into the following directions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

In Roy, July records the average highest temperatures, peaking at 91.9°F (33.3°C) and reaching a low of 71.8°F (22.1°C).

How hot is it in July?

In Roy, 91.9°F (33.3°C) is the average high-temperature and 71.8°F (22.1°C) is the average low-temperature during July. In July, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is appraised at 116.6°F (47°C).

What is the average humidity in July?

The average relative humidity in July is 75%.

How many days does it rain in July?

In Roy, in July, it is raining for 21.7 days, with typically 3.74" (95mm) of accumulated precipitation.

When it does not snow?

April through November are months without snowfall.

How many hours of daylight does Roy have in July?

In July, the average day length is 14h and 1min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:52 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:52 pm CDT.

How many hours of sunshine does Roy have in July?

In Roy, Mississippi, the average sunshine duration in July is 10.3h.

When is the highest UV index?

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

What is the UV index reading in July?

The average daily maximum UV index in July is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
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 July
Roy, MS

Average temperature in July - Roy, MS
  • Average high temperature in July: 91.9°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 July: 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).

Average pressure in July
Roy, MS

Average pressure in July - Roy, MS
  • Average pressure in July: 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 July
Roy, MS

Average wind speed in July - Roy, MS
  • Average wind speed in July: 4.6mph

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).

Average humidity in July
Roy, MS

Average humidity in July - Roy, MS
  • Average humidity in July: 75%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Roy, MS

Average rainfall in July - Roy, MS
  • Average rainfall in July: 3.74"

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

Average rainfall days in July
Roy, MS

Average rainfall days in July - Roy, MS
  • Average rainfall days in July: 21.7 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).

Average snowfall in July
Roy, MS

Average snowfall in July - Roy, MS
  • Average snowfall in July: 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").

Average snowfall days in July
Roy, MS

Average snowfall days in July - Roy, MS
  • Average snowfall days in July: 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).

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

Average daylight in July / Average sunshine in July - Roy, MS
  • Average daylight in July: 14h and 0min

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 July: 10h and 2min

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).

Average sunshine days in July
Roy, MS

Average sunshine days in July - Roy, MS
  • Average sunshine days in July: 7.5 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).

Average UV index in July
Roy, MS

Average UV index in July - Roy, MS
  • Average UV index in July: 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).

Average cloud cover in July
Roy, MS

Average cloud cover in July - Roy, MS
  • Average cloud cover in July: 36

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

Average visibility in July
Roy, MS

Average visibility in July - Roy, MS
  • Average visibility in July: 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).

Roy, Mississippi, USA

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