September weather forecastRussellville, SC
September
Weather in September
September, the first month of the autumn in Russellville, is still a warm month, with an average temperature fluctuating between 67.6°F (19.8°C) and 84.6°F (29.2°C).Temperature
As August transitions into September, the average high-temperature rests at a moderately hot 84.6°F (29.2°C), maintaining a close resemblance to the previous month. Russellville's nighttime temperature in September falls to an average of 67.6°F (19.8°C).Heat index
Throughout September, the heat index is appraised at a fiery hot 95°F (35°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
May, August, September and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Russellville, in September, it is raining for 13.2 days, with typically 1.42" (36mm) of accumulated precipitation. In Russellville, during the entire year, the rain falls for 139.5 days and collects up to 15.75" (400mm) of precipitation.Snowfall
In Russellville, snow does not fall in March through December.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:13 am and sunset at 7:05 pm EDT.
Sunshine
In Russellville, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 6 during September translates into the following guidance:
Resist overexposure. Safeguarding from solar damage is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Russellville, SC
- Average high temperature in September: 84.6°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 (55°F).
- Average low temperature in September: 67.6°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).
Average pressure in September
Russellville, SC
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Russellville, SC
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Russellville, SC
- Average humidity in September: 78%
The months with the highest relative humidity are May, August, September and December (78%).
The month with the lowest relative humidity is January (73%).
Average rainfall in September
Russellville, SC
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is August (2.87").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Russellville, SC
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is August (20.1 days).
The month with the least rainy days is November (6.4 days).
Average snowfall in September
Russellville, SC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Russellville, SC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (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
Russellville, SC
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Russellville, SC
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is August (6.8 days).
Average UV index in September
Russellville, SC
- 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
Russellville, SC
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Russellville, SC
- 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).
