Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The average high-temperature slightly decreases in September, shifting from a tropical 86.7°F (30.4°C) in August to a warm 81.3°F (27.4°C). During September, Griffintown experiences an average low-temperature of 61.7°F (16.5°C) at night.Heat index
The average heat index in September is appraised at a tropical 86°F (30°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
The average relative humidity in September is 76%.Rainfall
In Griffintown, in September, during 13.1 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, in Griffintown, there are 158.3 rainfall days, and 26.57" (675mm) of precipitation is accumulated.Snowfall
In Griffintown, snow does not fall in May through September.Daylight
The average length of the day in September in Griffintown, Tennessee, is 12h and 24min.On the first day of September in Griffintown, sunrise is at 6:20 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:33 pm CDT.
Sunshine
In Griffintown, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What is the average September temperature in Griffintown?
What is the average humidity in September in Griffintown?
How much does it rain in Griffintown in September?
When it does not snow in Griffintown?
Does it snow in Griffintown in September?
What is the average length of the day in September in Griffintown?
When are sunrise and sunset in September in Griffintown?
How long on average sun shines in September in Griffintown?
What is the UV index reading in September in Griffintown?
Average temperature in September
Griffintown, TN
- Average high temperature in September: 81.3°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 (44.2°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Griffintown, 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
Griffintown, TN
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Griffintown, TN
- Average humidity in September: 76%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Griffintown, TN
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is July (3.5").
The driest month (with the least rainfall) is November (1.42").
Average rainfall days in September
Griffintown, TN
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
Griffintown, TN
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.79").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Griffintown, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4 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
Griffintown, TN
- 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 42min).
- Average sunshine in September: 8h and 4min
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 36min).
Average sunshine days in September
Griffintown, TN
- Average sunshine days in September: 15 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Griffintown, 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
Griffintown, 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
Griffintown, TN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Griffintown, Tennessee, USA
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