September weather forecastRussellville, IN
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Russellville, Indiana, with an average temperature ranging between max 75.4°F (24.1°C) and min 57.4°F (14.1°C).Temperature
With the start of September, Russellville measures an average high-temperature of a still moderately hot 75.4°F (24.1°C), not significantly differing from August's 79.9°F (26.6°C). Russellville encounters an average low-temperature of 57.4°F (14.1°C) during September nights.Humidity
In September, the average relative humidity is 78%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 1.34" (34mm) of precipitation is accumulated. Throughout the year, there are 144.1 rainfall days, and 22.17" (563mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:16 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 7:31 pm EDT.
Sunshine
The average sunshine in September is 8.2h.UV index
In Russellville, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 5 during September translates into the following directions:
Prioritize safety - Recommendations to avert sunburn are shared. To protect against the Sun's most potent rays, avoid direct exposure around midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Russellville, IN
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Russellville, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Russellville, IN
- Average wind speed in September: 7mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in September
Russellville, IN
- Average humidity in September: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Russellville, IN
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in September
Russellville, IN
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (19.1 days).
The months with the least rainy days are January and February (6.8 days).
Average snowfall in September
Russellville, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Russellville, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Russellville, IN
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Russellville, IN
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in September
Russellville, IN
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Russellville, IN
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Russellville, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
