September weather forecast
Fosterville, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Fosterville, Tennessee, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 61.9°F (16.6°C).

Temperature

September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's hot 86.5°F (30.3°C) to a moderately hot 81.1°F (27.3°C). Fosterville temperatures generally rest at a low of 61.9°F (16.6°C) during the September nights.

Heat index

In September, the heat index is estimated at a hot 86°F (30°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.

Humidity

The average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 2.09" (53mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Fosterville, the average length of the day in September is 12h and 23min.
On the first day of September, 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

The average sunshine in September is 8.3h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Take precautions - Protection against skin and eye damage is obliged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

The high-temperature, in September, in Fosterville, records 81.1°F (27.3°C), while the low-temperature is 61.9°F (16.6°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What is the average humidity in September?

In Fosterville, Tennessee, the average relative humidity in September is 75%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 13.2 days and typically collects 2.09" (53mm) of precipitation.

How much does it rain in September?

In Fosterville, in September, during 13.2 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow?

In Fosterville, snow does not fall in May through October.

How many hours of daylight does Fosterville have in September?

In Fosterville, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September?

In September, on the first day of the month, 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.

How many hours of sunshine does Fosterville have in September?

In September, the average sunshine duration in Fosterville is 8.3h.

What is the UV index reading in September?

In Fosterville, Tennessee, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Fosterville, TN

Average temperature in September - Fosterville, 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
Fosterville, TN

Average pressure in September - Fosterville, 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
Fosterville, TN

Average wind speed in September - Fosterville, 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
Fosterville, TN

Average humidity in September - Fosterville, 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
Fosterville, TN

Average rainfall in September - Fosterville, 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
Fosterville, TN

Average rainfall days in September - Fosterville, 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
Fosterville, TN

Average snowfall in September - Fosterville, 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
Fosterville, TN

Average snowfall days in September - Fosterville, 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
Fosterville, TN

Average daylight in September / Average sunshine in September - Fosterville, 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
Fosterville, TN

Average sunshine days in September - Fosterville, 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
Fosterville, TN

Average UV index in September - Fosterville, 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
Fosterville, TN

Average cloud cover in September - Fosterville, 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
Fosterville, TN

Average visibility in September - Fosterville, 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).

Fosterville, Tennessee, USA

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