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
Erwin's weather, upon September's arrival, documents an average high-temperature of a still moderately hot 76.1°F (24.5°C), nearly identical to the prior month. Throughout September, Erwin registers a distinct decrease from daytime highs, reaching an average low of 54°F (12.2°C).Humidity
The average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 14.8 days and accumulates 1.69" (43mm) of precipitation.Snowfall
In Erwin, snow does not fall in May through September.Daylight
In Erwin, Tennessee, the average length of the day in September is 12h and 24min.On the first day of September in Erwin, sunrise is at 7:01 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine in Erwin is 8.5h.UV index
In Erwin, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the average September temperature in Erwin?
What is the average humidity in September in Erwin?
What is the driest month in Erwin?
How much does it rain in Erwin in September?
When it does not snow in Erwin?
Does it snow in Erwin in September?
How many hours of daylight does Erwin have in September?
When is the sunrise / sunset in September in Erwin?
How many hours of sunshine does Erwin have in September?
How high is the UV index in September in Erwin?
Average temperature in September
Erwin, TN
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Erwin, TN
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Erwin, TN
- Average wind speed in September: 3.9mph
The windiest months (with the highest average wind speed) are January, February and April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in September
Erwin, TN
- Average humidity in September: 79%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Erwin, TN
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Erwin, TN
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in September
Erwin, TN
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.7").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Erwin, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Erwin, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Erwin, TN
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in September
Erwin, TN
- Average UV index in September: 4
The months with the highest UV index are June 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
Erwin, TN
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are June and August (Cloud cover 34).
Average visibility in September
Erwin, TN
- Average visibility in September: 5mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (5mi).
Erwin, Tennessee, USA
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