September weather forecast
Rainbow City, AL

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Weather in September

September, the first month of the autumn in Rainbow City, is still a warm month, with an average temperature varying between 63.9°F (17.7°C) and 83.8°F (28.8°C).

Temperature

As September takes its course, Rainbow City's average high-temperature registers at a warm 83.8°F (28.8°C), closely aligning with the preceding month. Rainbow City throughout September, experiences an average nighttime temperature of 63.9°F (17.7°C).

Heat index

September's average heat index is calculated to be a hot 91.4°F (33°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. 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 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

The average relative humidity in September is 74%.

Rainfall

The months with the least rainfall are September and October Rain falls for 13.5 days and accumulates 2.4" (61mm) of rain.

Snowfall

In Rainbow City, snow does not fall in April through October.

Daylight

In Rainbow City, the average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:18 am and sunset at 7:09 pm. On the last day of September, sunrise is at 6:38 am and sunset at 6:29 pm CDT.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In Rainbow City, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: An average UV index of 5 in September transforms into this advice:
Put precautions into practice - Guidance to elude sunburn is provided. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.

Frequently asked questions

How hot is September?

In September, in Rainbow City, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 63.9°F (17.7°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 91.4°F (33°C).

What is the average humidity in September?

In Rainbow City, the average relative humidity in September is 74%.

What is the driest month?

September and October are months with the least rain when the rain falls for 13.5 days and typically aggregates up to 2.4" (61mm) of rain.

How much does it rain in September?

In Rainbow City, during September, the rain falls for 13.5 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in September?

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

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:18 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:29 pm CDT.

How long on average sun shines in September?

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

What is the UV index intensity in September?

In September, the average daily maximum UV index in Rainbow City is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Rainbow City, AL

Average temperature in September - Rainbow City, AL
  • Average high temperature in September: 83.8°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (49.6°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 (34.3°F).

Average pressure in September
Rainbow City, AL

Average pressure in September - Rainbow City, 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
Rainbow City, AL

Average wind speed in September - Rainbow City, AL
  • Average wind speed in September: 4.7mph

The windiest months (with the highest average wind speed) are January, February and March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in September
Rainbow City, AL

Average humidity in September - Rainbow City, AL
  • Average humidity in September: 74%

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

Average rainfall in September
Rainbow City, AL

Average rainfall in September - Rainbow City, AL
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is December (4.17").
The driest months (with the least rainfall) are September and October (2.4").

Average rainfall days in September
Rainbow City, AL

Average rainfall days in September - Rainbow City, AL
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is July (21.2 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in September
Rainbow City, AL

Average snowfall in September - Rainbow City, AL
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Rainbow City, AL

Average snowfall days in September - Rainbow City, AL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.7 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
Rainbow City, AL

Average daylight in September / Average sunshine in September - Rainbow City, 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 month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in September
Rainbow City, AL

Average sunshine days in September - Rainbow City, AL
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (7.8 days).

Average UV index in September
Rainbow City, AL

Average UV index in September - Rainbow City, 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
Rainbow City, AL

Average cloud cover in September - Rainbow City, AL
  • Average cloud cover in September: 31

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in September
Rainbow City, AL

Average visibility in September - Rainbow City, 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).

Rainbow City, Alabama, USA

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