September weather forecastUnion City, TN
September
Weather in September
September, the first month of the autumn in Union City, is also a moderately hot month, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 62.4°F (16.9°C).Temperature
Union City starts September with an average high-temperature of a warm 81.9°F (27.7°C), a minor shift from August's 86.5°F (30.3°C). In the month of September, an average of 62.4°F (16.9°C) marks the low-temperature.Heat index
In September, the average heat index is appraised at a hot 86°F (30°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.Understanding the heat index involves considering values for shaded locales with light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In Union City, the average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall in Union City. Rain falls for 12.2 days and accumulates 1.65" (42mm) of precipitation.Snowfall
In Union City, Tennessee, snow does not fall in April through October.Daylight
In Union City, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:23 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:40 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In September, the average daily maximum UV index in Union City is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 in September translates into this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Union City, TN
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (43.3°F).
- Average low temperature in September: 62.4°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 (30.4°F).
Average pressure in September
Union City, TN
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Union City, TN
- Average wind speed in September: 6.4mph
The windiest months (with the highest average wind speed) are February, March and April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Union City, TN
- Average humidity in September: 73%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Union City, TN
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is April (4.57").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in September
Union City, TN
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Union City, TN
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.69").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Union City, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 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
Union City, TN
- 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 24min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Union City, TN
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Union City, TN
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in September
Union City, TN
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in September
Union City, TN
- 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).
