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
With the arrival of September, Morgantown experiences a modest decline in average high-temperatures, transitioning from a hot 86.5°F (30.3°C) in August to a warm 80.6°F (27°C). Morgantown observes an average low-temperature of 59.4°F (15.2°C) during September nights.Heat index
The heat index for September is appraised at 84.2°F (29°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
The months with the lowest humidity are January, June through November, with an average relative humidity of 76%.Rainfall
In Morgantown, in September, it is raining for 12.6 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, there are 163.6 rainfall days, and 37.44" (951mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Morgantown, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 7:12 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:24 pm EDT.
Sunshine
The average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 5 during September leads to these advisories:
Take precautions - Protection against sun damage is advised. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Morgantown, TN
- Average high temperature in September: 80.6°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in September
Morgantown, TN
- 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 (29.98"Hg).
Average wind speed in September
Morgantown, TN
- Average wind speed in September: 4.3mph
The windiest months (with the highest average wind speed) are February and April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).
Average humidity in September
Morgantown, TN
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are January, June, July, August, September, October and November (76%).
Average rainfall in September
Morgantown, TN
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in September
Morgantown, TN
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Morgantown, TN
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Morgantown, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.8 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
Morgantown, 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 1min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Morgantown, TN
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Morgantown, 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, February and December (UV index 2).
Average cloud cover in September
Morgantown, TN
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
Morgantown, TN
- Average visibility in September: 5mi
The months with the highest visibility are February, June, October and November (6mi).
The months with the lowest visibility are January, March, April, May, July, August, September and December (5mi).
Morgantown, Tennessee, USA
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