August weather forecastRoswell, GA
August
Weather in August
August in Roswell offers a slightly cooler atmosphere compared to July. The month observes a slight drop in the average high temperature to 89.4°F (31.9°C). Pools and water parks remain crowded, with locals and tourists seeking refuge from the intense sun. Alongside this, the month also experiences the most rainfall recorded annually at 5.55" (141mm). Despite the high humidity, life in the city remains vibrant under the extended daylight hours.Temperature
Roswell records an average high-temperature of a still hot 89.4°F (31.9°C) in August, maintaining a close correlation with July's 90.3°F (32.4°C). Throughout the month of August, the nighttime temperature dips to an average of 70.3°F (21.3°C).Heat index
The average heat index in August is evaluated at a very hot 102.2°F (39°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.One should consider that heat index numbers are for shaded settings and light wind. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
July and August, with an average relative humidity of 68%, are the least humid months in Roswell.Rainfall
The month with the most rainfall is August, when the rain falls for 20.3 days and typically aggregates up to 5.55" (141mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In August, the average length of the day is 13h and 23min.On the first day of the month, sunrise is at 6:49 am and sunset at 8:38 pm. On the last day of August, sunrise is at 7:10 am and sunset at 8:04 pm EDT.
Sunshine
In August, the average sunshine is 9.3h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In August, the UV index of 6 transforms into the following advice:
Guard oneself from overexposure. Defence against sun injury is vital. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Roswell, GA
- Average high temperature in August: 89.4°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in August: 70.3°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (34.2°F).
Average pressure in August
Roswell, GA
- Average pressure in August: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in August
Roswell, GA
- Average wind speed in August: 4.6mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in August
Roswell, GA
- Average humidity in August: 68%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are July and August (68%).
Average rainfall in August
Roswell, GA
- Average rainfall in August: 5.55"
The wettest month (with the highest rainfall) is August (5.55").
The driest month (with the least rainfall) is October (2.36").
Average rainfall days in August
Roswell, GA
- Average rainfall days in August: 20.3 days
The month with the highest number of rainy days is July (20.8 days).
The months with the least rainy days are October and November (10.3 days).
Average snowfall in August
Roswell, GA
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.18").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Roswell, GA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (1.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Roswell, GA
- Average daylight in August: 13h and 24min
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 August: 9h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in August
Roswell, GA
- Average sunshine days in August: 8.9 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is July (8 days).
Average UV index in August
Roswell, GA
- Average UV index in August: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in August
Roswell, GA
- Average cloud cover in August: 34
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in August
Roswell, GA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
