September weather forecast
Heiberger, AL

Share

Weather in September

The first month of the autumn, September, is still a hot month in Heiberger, Alabama, with an average temperature fluctuating between 87.1°F (30.6°C) and 67.1°F (19.5°C).

Temperature

With the onset of September, the average high-temperature registers at a still hot 87.1°F (30.6°C), subtly different from August's 91.4°F (33°C). During September, the temperature is averaged to a low of 67.1°F (19.5°C) at night.

Heat index

September's average heat index is calculated to be a very hot 98.6°F (37°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In Heiberger, the average relative humidity in September is 71%.

Rainfall

September is the month with the least rainfall. Rain falls for 13.4 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

In Heiberger, snow does not fall in March through October.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:34 pm CDT.

Sunshine

In Heiberger, the average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 6 in September translates into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

During September, Heiberger experiences an average high-temperature of 87.1°F (30.6°C) and a low-temperature of 67.1°F (19.5°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is calculated to be 98.6°F (37°C).

What is the average humidity in September in Heiberger?

The average relative humidity in September is 71%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 13.4 days and typically collects 1.97" (50mm) of precipitation.

How many days does it rain in September?

In September, in Heiberger, the rain falls for 13.4 days. Throughout September, 1.97" (50mm) of precipitation is accumulated.

When it does not snow?

March through October are months without snowfall.

How many hours of daylight does Heiberger have in September?

In Heiberger, the average day length in September is 12h and 22min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:24 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm CDT.

How many hours of sunshine does Heiberger have in September?

In Heiberger, the average sunshine duration in September is 9.2h.

What is the UV index reading in September?

In Heiberger, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
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
Heiberger, AL

Average temperature in September - Heiberger, AL
  • Average high temperature in September: 87.1°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (53.8°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).

Average pressure in September
Heiberger, AL

Average pressure in September - Heiberger, AL
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

Average wind speed in September
Heiberger, AL

Average wind speed in September - Heiberger, AL
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in September
Heiberger, AL

Average humidity in September - Heiberger, AL
  • Average humidity in September: 71%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).

Average rainfall in September
Heiberger, AL

Average rainfall in September - Heiberger, AL
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is April (3.94").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in September
Heiberger, AL

Average rainfall days in September - Heiberger, AL
  • Average rainfall days in September: 13.4 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.3 days).

Average snowfall in September
Heiberger, AL

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

The month with the highest snowfall is January (0.39").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in September
Heiberger, AL

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

The month with the highest number of snowfall days is January (1.1 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
Heiberger, AL

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).

Average sunshine days in September
Heiberger, AL

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

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (8.1 days).

Average UV index in September
Heiberger, AL

Average UV index in September - Heiberger, AL
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Heiberger, AL

Average cloud cover in September - Heiberger, AL
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are September and October (Cloud cover 29).

Average visibility in September
Heiberger, AL

Average visibility in September - Heiberger, 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).

Heiberger, Alabama, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location