September weather forecastPorters Grove, TN
September
Weather in September
The first month of the autumn, September, is still a warm month in Porters Grove, Tennessee, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 82.8°F (28.2°C).Temperature
As Porters Grove welcomes September, the average high-temperature records at a warm 82.8°F (28.2°C), marking an insignificant deviation from the prior month. Porters Grove experiences a consistent average temperature of 63.3°F (17.4°C) throughout the nights in September.Heat index
For most parts of September, the heat index is computed to be a tropical 87.8°F (31°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.When referencing the heat index, its values are suitable for shady environments and light breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
The average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 11 days and accumulates 1.34" (34mm) of precipitation.Snowfall
In Porters Grove, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:28 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:40 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Porters Grove, 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 the average person.Note: In September, the UV index of 5 transforms into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Porters Grove, TN
- Average high temperature in September: 82.8°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Porters Grove, TN
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Porters Grove, TN
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.3mph).
Average humidity in September
Porters Grove, TN
- Average humidity in September: 73%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Porters Grove, TN
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is February (3.5").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in September
Porters Grove, TN
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Porters Grove, TN
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.1").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Porters Grove, TN
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Porters Grove, TN
- Average daylight in September: 12h and 24min
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: 9h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Porters Grove, TN
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (12 days).
Average UV index in September
Porters Grove, TN
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in September
Porters Grove, TN
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Porters Grove, 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).
