September weather forecast
Trinity, AL

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Trinity, Alabama, with an average temperature fluctuating between 63.9°F (17.7°C) and 83.1°F (28.4°C).

Temperature

Entering September, the average high-temperature is recorded at a warm 83.1°F (28.4°C), exhibiting a minimal shift from August's 88.3°F (31.3°C). In the month of September, the nighttime temperature dips to a steady average of 63.9°F (17.7°C).

Heat index

September's average heat index is appraised at a tropical 89.6°F (32°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.

Humidity

The average relative humidity in September in Trinity is 74%.

Rainfall

In Trinity, in September, it is raining for 14 days, with typically 2.6" (66mm) of accumulated precipitation. In Trinity, during the entire year, the rain falls for 176.2 days and collects up to 42.32" (1075mm) of precipitation.

Snowfall

In Trinity, Alabama, snow does not fall in April through October.

Daylight

In Trinity, the average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:14 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:33 pm CDT.

Sunshine

In Trinity, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 5 during September leads to these advisories:
Take necessary precautions - Defending against sun damage is advocated. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Feb 9, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

Is it hot in Trinity during September?

In Trinity, 83.1°F (28.4°C) is the average high-temperature and 63.9°F (17.7°C) is the average low-temperature during September. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is appraised at 89.6°F (32°C).

What is the average humidity in September in Trinity?

In September, the average relative humidity is 74%.

How much does it rain in Trinity in September?

In Trinity, Alabama, in September, during 14 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

When it does not snow in Trinity?

April through October are months without snowfall in Trinity.

What is the average length of the day in September in Trinity?

In September, the average day length in Trinity is 12h and 23min.

What time are sunrise and sunset in September in Trinity?

In September, on the first day of the month, sunrise is at 6:21 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:33 pm CDT.

How long on average sun shines in September in Trinity?

In September, the average sunshine duration in Trinity is 8.8h.

What is the UV index reading in September in Trinity?

In Trinity, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Trinity, AL

Average temperature in September - Trinity, AL
  • Average high temperature in September: 83.1°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (47.8°F).

  • Average low temperature in September: 63.9°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in September
Trinity, AL

Average pressure in September - Trinity, AL
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in September
Trinity, AL

Average wind speed in September - Trinity, AL
  • Average wind speed in September: 5.4mph

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

Average humidity in September
Trinity, AL

Average humidity in September - Trinity, AL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Trinity, AL

Average rainfall in September - Trinity, AL
  • Average rainfall in September: 2.6"

The wettest months (with the highest rainfall) are April and December (4.33").
The driest month (with the least rainfall) is November (2.4").

Average rainfall days in September
Trinity, AL

Average rainfall days in September - Trinity, AL
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (10.2 days).

Average snowfall in September
Trinity, AL

Average snowfall in September - Trinity, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Trinity, AL

Average snowfall days in September - Trinity, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.1 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
Trinity, AL

Average daylight in September / Average sunshine in September - Trinity, AL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Trinity, AL

Average sunshine days in September - Trinity, AL
  • Average sunshine days in September: 14.1 days

The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (9.2 days).

Average UV index in September
Trinity, AL

Average UV index in September - Trinity, AL
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Trinity, AL

Average cloud cover in September - Trinity, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in September
Trinity, AL

Average visibility in September - Trinity, AL
  • 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).

Trinity, Alabama, USA

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