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
September reports an average high-temperature of a warm 82.9°F (28.3°C), slightly varied from August's 86.7°F (30.4°C). Brownsville, during September nights, observes an average temperature of 63.9°F (17.7°C).Heat index
September's heat index is computed to be a tropical 89.6°F (32°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In Brownsville, the average relative humidity in September is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.1 days and typically collects 1.18" (30mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:29 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:41 pm CDT.
Sunshine
In September, the average sunshine is 9.6h.UV index
In September, the average daily maximum UV index in Brownsville is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Brownsville have 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
Brownsville, TN
- Average high temperature in September: 82.9°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 (45.7°F).
- Average low temperature in September: 63.9°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure in September
Brownsville, 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
Brownsville, TN
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.3mph).
Average humidity in September
Brownsville, 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 (70%).
Average rainfall in September
Brownsville, TN
- Average rainfall in September: 1.18"
The wettest months (with the highest rainfall) are April and December (2.91").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days in September
Brownsville, TN
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in September
Brownsville, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Brownsville, TN
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.3 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
Brownsville, 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: 9h and 4min
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
Brownsville, TN
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (12 days).
Average UV index in September
Brownsville, TN
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Brownsville, TN
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Brownsville, 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).
Brownsville, Tennessee, USA
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