September weather forecast
Summit, AL

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Weather in September

September, the first month of the autumn in Summit, is still a warm month, with an average temperature varying between 63.1°F (17.3°C) and 83.1°F (28.4°C).

Temperature

September brings a marginal elevation to a warm 83.1°F (28.4°C) from August's 88°F (31.1°C) in Summit's average high-temperatures. The average low-temperature, in September, is a refreshing 63.1°F (17.3°C).

Heat index

For September, the heat index is calculated to be a tropical 89.6°F (32°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

In September, the average relative humidity is 75%.

Rainfall

The month with the least rainfall is September, when the rain falls for 13.6 days and typically collects 2.32" (59mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:19 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:31 pm CDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In September, the UV index of 5 transforms into the following advice:
Undertake precautions - Guarding against sun damage is counselled. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

How hot is September?

In Summit, in September, the average high-temperature is 83.1°F (28.4°C), and the average low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in September is calculated to be 89.6°F (32°C).

What is the average humidity in September?

In Summit, the average relative humidity in September is 75%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 13.6 days and accumulates 2.32" (59mm) of precipitation.

How much does it rain in September?

In Summit, in September, during 13.6 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Summit have in September?

The average day length in September is 12h and 22min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:19 am and sunset at 7:11 pm. On the last day of the month, in Summit, sunrise is at 6:40 am and sunset at 6:31 pm CDT.

How many hours of sunshine does Summit have in September?

In Summit, the average sunshine duration in September is 8.6h.

What is the UV index reading in September in Summit?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Summit, AL

Average temperature in September - Summit, 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 (48.4°F).

  • Average low temperature in September: 63.1°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in September
Summit, AL

Average pressure in September - Summit, 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
Summit, AL

Average wind speed in September - Summit, AL
  • Average wind speed in September: 4.9mph

The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September
Summit, AL

Average humidity in September - Summit, AL
  • Average humidity in September: 75%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).

Average rainfall in September
Summit, AL

Average rainfall in September - Summit, AL
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is September (2.32").

Average rainfall days in September
Summit, AL

Average rainfall days in September - Summit, AL
  • Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (9.5 days).

Average snowfall in September
Summit, AL

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

The month with the highest snowfall is January (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Summit, AL

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

The month with the highest number of snowfall days is January (1.8 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
Summit, AL

Average daylight in September / Average sunshine in September - Summit, 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 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Summit, AL

Average sunshine days in September - Summit, AL
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (9.6 days).

Average UV index in September
Summit, AL

Average UV index in September - Summit, AL
  • 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 and December (UV index 2).

Average cloud cover in September
Summit, AL

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

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 31).

Average visibility in September
Summit, AL

Average visibility in September - Summit, AL
  • Average visibility in September: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Summit, Alabama, USA

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