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's onset brings a negligible change in high-temperatures, falling from a warm 85.5°F (29.7°C) in August to a still moderately hot 79.7°F (26.5°C). Simpsons witnesses an average low-temperature of 59.7°F (15.4°C) throughout the month of September.Humidity
The average relative humidity in September in Simpsons is 77%.Rainfall
The month with the least rainfall in Simpsons is September, when the rain falls for 12.5 days and typically collects 1.89" (48mm) of precipitation.Snowfall
In Simpsons, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of September in Simpsons, sunrise is at 6:14 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:26 pm CDT.
Sunshine
In Simpsons, Tennessee, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Simpsons is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Minimize direct exposure to the Sun during midday when its radiation is at its peak. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Simpsons in September?
What is the average humidity in September in Simpsons?
What is the driest month in Simpsons?
How much does it rain in Simpsons in September?
When it does not snow in Simpsons?
What is the average length of the day in September in Simpsons?
What time are sunrise and sunset in September in Simpsons?
How long on average sun shines in September in Simpsons?
What is the UV index reading in September in Simpsons?
Average temperature in September
Simpsons, TN
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (43.7°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Simpsons, TN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Simpsons, TN
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in September
Simpsons, TN
- Average humidity in September: 77%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Simpsons, TN
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is February (3.82").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Simpsons, TN
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in September
Simpsons, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Simpsons, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.9 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
Simpsons, 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 1min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Simpsons, TN
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in September
Simpsons, 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
Simpsons, 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 30).
Average visibility in September
Simpsons, TN
- Average visibility in September: 5mi
The months with the highest visibility are February, April, June, October, November and December (6mi).
The months with the lowest visibility are January, March, May, July, August and September (5mi).
Simpsons, Tennessee, USA
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