September weather forecast
O'Conner, TN

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Weather in September

The first month of the autumn, September, is also a moderately hot month in O'Conner, Tennessee, with an average temperature varying between 79.5°F (26.4°C) and 59.5°F (15.3°C).

Temperature

Transition into September subtly marks a drop in the average high-temperature, moderately moving from a warm 85.3°F (29.6°C) in August to a still moderately hot 79.5°F (26.4°C). Nighttime temperatures consistently average a moderate 59.5°F (15.3°C) during September.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In September, in O'Conner, the rain falls for 12.9 days. Throughout September, 2.28" (58mm) of precipitation is accumulated. Throughout the year, there are 167.9 rainfall days, and 33.98" (863mm) of precipitation is accumulated.

Snowfall

In O'Conner, Tennessee, snow does not fall in May through October.

Daylight

In O'Conner, the average length of the day in September is 12h and 23min.
On the first day of September, 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 O'Conner, the average sunshine in September is 8.1h.

UV index

In O'Conner, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 5 in September transforms into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for O'Conner in September?

During September, O'Conner experiences an average high-temperature of 79.5°F (26.4°C) and a low-temperature of 59.5°F (15.3°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is estimated at 96.8°F (36°C).

What is the average humidity in September?

In O'Conner, the average relative humidity in September is 77%.

How much does it rain in September?

In O'Conner, in September, it is raining for 12.9 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow?

In O'Conner, Tennessee, snow does not fall in May through October.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

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

How long on average sun shines in September?

The average sunshine duration in September is 8.1h.

How high is the UV index in September?

In O'Conner, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health threat 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
O'Conner, TN

Average temperature in September - O
  • Average high temperature in September: 79.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (43.5°F).

  • Average low temperature in September: 59.5°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 (29.5°F).

Average pressure in September
O'Conner, TN

Average pressure in September - O
  • 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
O'Conner, TN

Average wind speed in September - O
  • Average wind speed in September: 4.6mph

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
O'Conner, TN

Average humidity in September - O
  • 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
O'Conner, TN

Average rainfall in September - O
  • Average rainfall in September: 2.28"

The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is November (1.54").

Average rainfall days in September
O'Conner, TN

Average rainfall days in September - O
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is November (9.3 days).

Average snowfall in September
O'Conner, TN

Average snowfall in September - O
  • 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
O'Conner, TN

Average snowfall days in September - O
  • 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
O'Conner, TN

Average daylight in September / Average sunshine in September - O
  • 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
O'Conner, TN

Average sunshine days in September - O
  • Average sunshine days in September: 14.3 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (10.4 days).

Average UV index in September
O'Conner, TN

Average UV index in September - O
  • 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
O'Conner, TN

Average cloud cover in September - O
  • Average cloud cover in September: 34

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
O'Conner, TN

Average visibility in September - O
  • Average visibility in September: 5mi

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

O'Conner, Tennessee, USA

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