September weather forecast
Patterson, TN

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Weather in September

The first month of the autumn, September, is still a warm month in Patterson, Tennessee, with an average temperature ranging between min 62.8°F (17.1°C) and max 81.7°F (27.6°C).

Temperature

During the shift to September, a minor reduction in average high-temperature is observed, shifting from a hot 87.4°F (30.8°C) in August to a moderately hot 81.7°F (27.6°C). Patterson observes an average low-temperature of 62.8°F (17.1°C) during September.

Heat index

The heat index for September is appraised at a tropical 86°F (30°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In September, the average relative humidity is 74%.

Rainfall

The months with the least rainfall are September and November Rain falls for 14 days and accumulates 2.32" (59mm) of rain.

Snowfall

May through October are months without snowfall in Patterson.

Daylight

In Patterson, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:18 am and sunset at 7:13 pm. On the last day of September, in Patterson, sunrise is at 6:41 am and sunset at 6:31 pm CDT.

Sunshine

In September, the average sunshine in Patterson is 8.6h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Prioritize safety - Recommendations to avert sunburn are shared. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in Patterson?

In Patterson, in September, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 62.8°F (17.1°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 86°F (30°C).

What is the average humidity in September in Patterson?

In Patterson, the average relative humidity in September is 74%.

What is the driest month in Patterson?

September and November are months with the least rain in Patterson when the rain falls for 14 days and typically aggregates up to 2.32" (59mm) of rain.

How many days does it rain in September in Patterson?

In Patterson, during September, the rain falls for 14 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When it does not snow in Patterson?

May through October are months without snowfall.

What is the average length of the day in September in Patterson?

The average day length in September in Patterson, Tennessee, is 12h and 23min.

What time are sunrise and sunset in September in Patterson?

On the first day of September in Patterson, sunrise is at 6:18 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:31 pm CDT.

How long on average sun shines in September in Patterson?

The average sunshine duration in September in Patterson is 8.6h.

What is the UV index intensity in September in Patterson?

The average daily maximum UV index in September in Patterson is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
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
Patterson, TN

Average temperature in September - Patterson, TN
  • Average high temperature in September: 81.7°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in September: 62.8°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).

Average pressure in September
Patterson, TN

Average pressure in September - Patterson, 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
Patterson, TN

Average wind speed in September - Patterson, TN
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity in September
Patterson, TN

Average humidity in September - Patterson, TN
  • Average humidity in September: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (73%).

Average rainfall in September
Patterson, TN

Average rainfall in September - Patterson, TN
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is July (4.41").
The driest months (with the least rainfall) are September and November (2.32").

Average rainfall days in September
Patterson, TN

Average rainfall days in September - Patterson, TN
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (19.9 days).
The month with the least rainy days is November (9.8 days).

Average snowfall in September
Patterson, TN

Average snowfall in September - Patterson, TN
  • Average snowfall in September: 0"

The months with the highest snowfall are January and February (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Patterson, TN

Average snowfall days in September - Patterson, TN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Patterson, TN

Average daylight in September / Average sunshine in September - Patterson, 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 4min

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 30min).

Average sunshine days in September
Patterson, TN

Average sunshine days in September - Patterson, TN
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in September
Patterson, TN

Average UV index in September - Patterson, 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
Patterson, TN

Average cloud cover in September - Patterson, TN
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in September
Patterson, TN

Average visibility in September - Patterson, 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).

Patterson, Tennessee, USA

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