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
Jefferson City sees the arrival of September with an average high-temperature of a moderately hot 81.5°F (27.5°C), indicating a subtle variation from August. Jefferson City records a marked divergence from the day's high temperatures, with nights in September averaging at a mild 58.5°F (14.7°C).Heat index
During September, the heat index is calculated to be a hot 86°F (30°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
The average relative humidity in September in Jefferson City, Tennessee, is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 9.9 days and accumulates 1.14" (29mm) of precipitation.Snowfall
In Jefferson City, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:18 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September in Jefferson City is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Undertake precautions - It is suggested to shield oneself from sunburn. To protect against the Sun's most potent rays, avoid direct exposure around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Jefferson City?
What is the average humidity in September in Jefferson City?
What is the driest month in Jefferson City?
How much does it rain in Jefferson City in September?
When it does not snow in Jefferson City?
Does it snow in Jefferson City in September?
What is the average length of the day in September in Jefferson City?
When is the sunrise / sunset in September in Jefferson City?
How many hours of sunshine does Jefferson City have in September?
How high is the UV index in September in Jefferson City?
Average temperature in September
Jefferson City, TN
- Average high temperature in September: 81.5°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°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Jefferson City, TN
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Jefferson City, TN
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Jefferson City, TN
- Average humidity in September: 73%
The months with the highest relative humidity are February and December (78%).
The months with the lowest relative humidity are July and August (72%).
Average rainfall in September
Jefferson City, TN
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is February (2.8").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days in September
Jefferson City, TN
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is July (13.6 days).
The month with the least rainy days is October (8.5 days).
Average snowfall in September
Jefferson City, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Jefferson City, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.5 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
Jefferson City, TN
- Average daylight in September: 12h and 2min
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 48min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Jefferson City, TN
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is February (14.4 days).
Average UV index in September
Jefferson City, 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, February and December (UV index 2).
Average cloud cover in September
Jefferson City, TN
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 26).
Average visibility in September
Jefferson 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).
Jefferson City, Tennessee, USA
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