Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As August transitions into September, Rainbow City records an average high-temperature of a warm 83.8°F (28.8°C), showing a gentle shift from the preceding month. Throughout the month of September, the average temperature dips to an enjoyable 63.9°F (17.7°C) at night.Heat index
For most parts of September, the heat index is evaluated at a hot 91.4°F (33°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
In September, the average relative humidity 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 September in Rainbow City, 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.
Sunshine
The average sunshine in September 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 unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
How hot is it in Rainbow City in September?
What is the average humidity in September in Rainbow City?
What is the driest month in Rainbow City?
How much does it rain in Rainbow City in September?
When it does not snow in Rainbow City?
What is the average length of the day in September in Rainbow City?
When is the sunrise / sunset in September in Rainbow City?
How many hours of sunshine does Rainbow City have in September?
What is the UV index intensity in September in Rainbow City?
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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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