September weather forecast
Zimmerman, AL

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Weather in September

The first month of the autumn, September, is still a tropical month in Zimmerman, Alabama, with temperature in the range of an average high of 87.1°F (30.6°C) and an average low of 67.1°F (19.5°C).

Temperature

At the start of September, Zimmerman's average high-temperature reaches a still tropical 87.1°F (30.6°C), subtly different from the preceding month. Zimmerman experiences an average temperature drop to a refreshing 67.1°F (19.5°C) during September nights.

Heat index

In September, the average heat index is calculated to be a very hot 98.6°F (37°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Heat index determinations are made taking into account the shade and light air movements. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in September in Zimmerman is 71%.

Rainfall

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

Snowfall

March through October are months without snowfall.

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 6:35 pm CDT.

Sunshine

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

UV index

In Zimmerman, 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 the Sun's UV rays for average individuals.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

How hot is September?

The average high-temperature, in September, in Zimmerman, is 87.1°F (30.6°C), while the average low-temperature is 67.1°F (19.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 98.6°F (37°C).

What is the average humidity in September?

The average relative humidity in September is 71%.

What is the driest month in Zimmerman?

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

How many days does it rain in September?

In Zimmerman, in September, it is raining for 13.4 days, with typically 1.97" (50mm) of accumulated precipitation.

When it does not snow?

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

How many hours of daylight does Zimmerman have in September?

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

When 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 6:35 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.2h.

How high is the UV index in September?

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's 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
Zimmerman, AL

Average temperature in September - Zimmerman, 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
Zimmerman, AL

Average pressure in September - Zimmerman, 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
Zimmerman, AL

Average wind speed in September - Zimmerman, 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
Zimmerman, AL

Average humidity in September - Zimmerman, 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
Zimmerman, AL

Average rainfall in September - Zimmerman, 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
Zimmerman, AL

Average rainfall days in September - Zimmerman, 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
Zimmerman, AL

Average snowfall in September - Zimmerman, 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
Zimmerman, AL

Average snowfall days in September - Zimmerman, 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
Zimmerman, AL

Average daylight in September / Average sunshine in September - Zimmerman, 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
Zimmerman, AL

Average sunshine days in September - Zimmerman, 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
Zimmerman, AL

Average UV index in September - Zimmerman, 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
Zimmerman, AL

Average cloud cover in September - Zimmerman, 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
Zimmerman, AL

Average visibility in September - Zimmerman, 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).

Zimmerman, Alabama, USA

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