Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Ashburn experiences an average high-temperature of a moderately hot 84.7°F (29.3°C) in September, subtly different from August's 88.9°F (31.6°C). The temperature in Ashburn dips to an average of 68.2°F (20.1°C) during September nights.Heat index
The heat index for September is appraised at a torrid 95°F (35°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.Take note of the fact that heat index values are based on shaded circumstances with light airflows. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
In Ashburn, the average relative humidity in September is 76%.Rainfall
In Ashburn, during September, the rain falls for 12.8 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 145.3 rainfall days, and 20.08" (510mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall in Ashburn, Georgia.Daylight
The average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:20 pm EDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
How hot does it get in Ashburn in September?
What is the average humidity in September in Ashburn?
How many days does it rain in September in Ashburn?
When it does not snow in Ashburn?
What is the average length of the day in September in Ashburn?
When are sunrise and sunset in September in Ashburn?
How long on average sun shines in September in Ashburn?
What is the UV index reading in September in Ashburn?
Average temperature in September
Ashburn, GA
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in September: 68.2°F
The month with the highest average low temperature is August (72.9°F).
The coldest month (with the lowest average low temperature) is January (40.6°F).
Average pressure in September
Ashburn, GA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Ashburn, GA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Ashburn, GA
- Average humidity in September: 76%
The month with the highest relative humidity is August (77%).
The months with the lowest relative humidity are January, October and November (71%).
Average rainfall in September
Ashburn, GA
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in September
Ashburn, GA
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (6.7 days).
Average snowfall in September
Ashburn, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Ashburn, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Ashburn, GA
- Average daylight in September: 12h 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 September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Ashburn, GA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (21.5 days).
The months with the least sunshine days are July and August (9.8 days).
Average UV index in September
Ashburn, GA
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Ashburn, GA
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are May, June and October (Cloud cover 28).
Average visibility in September
Ashburn, 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).
Ashburn, Georgia, USA
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