September weather forecast
Summer Haven, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Summer Haven, Tennessee, with an average temperature ranging between min 61.3°F (16.3°C) and max 82.6°F (28.1°C).

Temperature

Summer Haven's average high-temperature marks a moderately hot 82.6°F (28.1°C) with the advent of September, closely mirroring that of the preceding month. During September, the average low-temperature is recorded at a comfortable 61.3°F (16.3°C).

Heat index

In September, the average heat index is evaluated at a hot 89.6°F (32°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

The average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.9 days and accumulates 2.05" (52mm) of precipitation.

Snowfall

In Summer Haven, snow does not fall in May through October.

Daylight

In Summer Haven, Tennessee, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 7:13 am and sunset at 8:06 pm. On the last day of September, sunrise is at 7:34 am and sunset at 7:25 pm EDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

In September, in Summer Haven, the average high-temperature is 82.6°F (28.1°C), and the average low-temperature is 61.3°F (16.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, in September is evaluated at 89.6°F (32°C).

What is the average humidity in September?

In Summer Haven, 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 11.9 days and typically collects 2.05" (52mm) of precipitation.

How many days does it rain in September?

In Summer Haven, in September, during 11.9 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

When it does not snow?

In Summer Haven, Tennessee, snow does not fall in May through October.

How many hours of daylight does Summer Haven have in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:13 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:25 pm EDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.5h.

How high is the UV index in September in Summer Haven?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Summer Haven, TN

Average temperature in September - Summer Haven, TN
  • Average high temperature in September: 82.6°F

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (46.8°F).

  • Average low temperature in September: 61.3°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).

Average pressure in September
Summer Haven, TN

Average pressure in September - Summer Haven, 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 (29.98"Hg).

Average wind speed in September
Summer Haven, TN

Average wind speed in September - Summer Haven, TN
  • Average wind speed in September: 4.2mph

The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity in September
Summer Haven, TN

Average humidity in September - Summer Haven, TN
  • Average humidity in September: 75%

The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, August and October (74%).

Average rainfall in September
Summer Haven, TN

Average rainfall in September - Summer Haven, TN
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is February (3.62").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in September
Summer Haven, TN

Average rainfall days in September - Summer Haven, TN
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in September
Summer Haven, TN

Average snowfall in September - Summer Haven, TN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Summer Haven, TN

Average snowfall days in September - Summer Haven, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.2 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
Summer Haven, TN

Average daylight in September / Average sunshine in September - Summer Haven, 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 3min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in September
Summer Haven, TN

Average sunshine days in September - Summer Haven, TN
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in September
Summer Haven, TN

Average UV index in September - Summer Haven, 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
Summer Haven, TN

Average cloud cover in September - Summer Haven, TN
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in September
Summer Haven, TN

Average visibility in September - Summer Haven, TN
  • Average visibility in September: 6mi

The months with the highest visibility are February, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, May and December (5mi).

Summer Haven, Tennessee, USA

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