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
September in Shelbyville indicates a minor shift in the average high-temperature, from August's tropical 86.5°F (30.3°C) to a moderately hot 81.1°F (27.3°C). Shelbyville's average low-temperature during September nights is observed to be an enjoyable 61.9°F (16.6°C).Heat index
During September, the heat index is calculated to be a hot 86°F (30°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
In September, the average relative humidity in Shelbyville is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.2 days and typically collects 2.09" (53mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day in Shelbyville is 12h and 23min.On the first day of September in Shelbyville, sunrise is at 6:18 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:30 pm CDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Shelbyville, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What are September temperatures in Shelbyville?
What is the average humidity in September in Shelbyville?
What is the driest month in Shelbyville?
How many days does it rain in September in Shelbyville?
When it does not snow in Shelbyville?
What is the average length of the day in September in Shelbyville?
When are sunrise and sunset in September in Shelbyville?
How many hours of sunshine does Shelbyville have in September?
How high is the UV index in September in Shelbyville?
Average temperature in September
Shelbyville, TN
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in September
Shelbyville, TN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Shelbyville, TN
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Shelbyville, TN
- Average humidity in September: 75%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Shelbyville, TN
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is February (4.33").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Shelbyville, TN
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in September
Shelbyville, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Shelbyville, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Shelbyville, TN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Shelbyville, TN
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in September
Shelbyville, TN
- 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
Shelbyville, TN
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Shelbyville, TN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Shelbyville, Tennessee, USA
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