September weather forecastFranklin, VA
September
Weather in September
The city of Franklin, Virginia, USA begins its transition to fall in September. Temperatures start to drop with a high average of approximately 80.8°F (27.1°C). Rainfall decreases to 2.28" (58mm), lowest in the last few months. Extended daylight of 12.4 hours begins dwindling. Mild winds and clear skies make this month ideal for outdoor activities.Temperature
September signifies a minor drop in average high-temperature, transitioning from a tropical 86.5°F (30.3°C) in August to a warm 80.8°F (27.1°C). The average nighttime temperature lowers to an enjoyable 63.9°F (17.7°C) throughout September.Heat index
The average heat index in September is computed to be a hot 86°F (30°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. 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 largely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 13 days and accumulates 2.28" (58mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Franklin, the average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 6:39 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:52 pm EDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Exercise prevention - Precautions against solar damage are endorsed. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Franklin, VA
- Average high temperature in September: 80.8°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (46.8°F).
- Average low temperature in September: 63.9°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in September
Franklin, VA
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Franklin, VA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Franklin, VA
- Average humidity in September: 78%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is January (75%).
Average rainfall in September
Franklin, VA
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in September
Franklin, VA
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in September
Franklin, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Franklin, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Franklin, VA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in September
Franklin, VA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in September
Franklin, VA
- 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
Franklin, VA
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 45).
The months with the least cloud cover are June and July (Cloud cover 31).
Average visibility in September
Franklin, VA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
