July weather forecastDennis, MS
July
Weather in July
July, the same as June, in Dennis, Mississippi, is a hot summer month, with an average temperature varying between 69.8°F (21°C) and 90°F (32.2°C).Temperature
Dennis's temperatures tend to reach their peak averages in July, with a high of 90°F (32.2°C) and a low of 69.8°F (21°C).Heat index
The heat index in July is estimated at an extremely hot 109.4°F (43°C). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
In Dennis, the average relative humidity in July is 76%.Rainfall
In July, the rain falls for 18.8 days. Throughout July, 3.86" (98mm) of precipitation is accumulated. In Dennis, Mississippi, during the entire year, the rain falls for 169.1 days and collects up to 38.11" (968mm) of precipitation.Snowfall
In Dennis, snow does not fall in April through October.Daylight
The average length of the day in July is 14h and 12min.On the first day of the month, sunrise is at 5:44 am and sunset at 8:09 pm. On the last day of July, in Dennis, sunrise is at 6:03 am and sunset at 7:55 pm CDT.
Sunshine
In July, the average sunshine in Dennis is 10.2h.UV index
The months with the highest UV index in Dennis are June and July, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 7 in July suggests the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. 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. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Dennis, MS
- Average high temperature in July: 90°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (48°F).
- Average low temperature in July: 69.8°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in July
Dennis, 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
Dennis, MS
- Average wind speed in July: 4.6mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in July
Dennis, MS
- Average humidity in July: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in July
Dennis, MS
- Average rainfall in July: 3.86"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in July
Dennis, MS
- Average rainfall days in July: 18.8 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in July
Dennis, MS
- Average snowfall in July: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in July
Dennis, MS
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Dennis, MS
- Average daylight in July: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in July: 10h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in July
Dennis, MS
- Average sunshine days in July: 9.8 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in July
Dennis, MS
- Average UV index in July: 7
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in July
Dennis, MS
- Average cloud cover in July: 34
The months with the most cloud cover are February and December (Cloud cover 50).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in July
Dennis, MS
- Average visibility in July: 5mi
The months with the highest visibility are February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, May and July (5mi).
