September weather forecastDuluth, GA
September
Weather in September
September brings about a refreshing change to Duluth, Georgia, as it transitions from summer to fall. With lower temperatures than August, the city begins to cool down. To set it apart, September attributes its recognition to a significant drop in rainfall to 2.72" (69mm). October will carry forward this trend to more substantial changes. Ultimately, September in Duluth sets the stage for the forthcoming autumn season, colored with a palette of warm hues.Temperature
With the arrival of September, Duluth notices a mild change in the average high-temperature, sliding from August's hot 89.2°F (31.8°C) to a moderately hot 83.8°F (28.8°C). Throughout September, Duluth records an average temperature of 65.3°F (18.5°C) at night.Heat index
During September, the heat index is appraised at a tropical 89.6°F (32°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity in Duluth is 70%.Rainfall
In Duluth, in September, it is raining for 12.9 days, with typically 2.72" (69mm) of accumulated precipitation. In Duluth, during the entire year, the rain falls for 181.5 days and collects up to 44.57" (1132mm) of precipitation.Snowfall
In Duluth, snow does not fall in April through October.Daylight
In Duluth, Georgia, the average length of the day in September is 12h and 22min.On the first day of September in Duluth, Georgia, sunrise is at 7:10 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September in Duluth, Georgia, is 8.4h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Prioritize safety - Recommendations to avert sunburn are shared. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Duluth, GA
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (49.5°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (34°F).
Average pressure in September
Duluth, GA
- Average pressure in September: 30.03"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 September
Duluth, GA
- Average wind speed in September: 5mph
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 September
Duluth, GA
- Average humidity in September: 70%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (68%).
Average rainfall in September
Duluth, GA
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is August (5.43").
The driest month (with the least rainfall) is October (2.32").
Average rainfall days in September
Duluth, GA
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in September
Duluth, GA
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Duluth, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Duluth, GA
- Average daylight in September: 12h 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 September: 8h and 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Duluth, GA
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in September
Duluth, GA
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Duluth, GA
- Average cloud cover in September: 32
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 September
Duluth, GA
- Average visibility in September: 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).
