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
Rosa notes an average high-temperature of a warm 82.9°F (28.3°C) in September, displaying minor variation from August. During the nights in September, Rosa experiences a consistent average temperature of 63.7°F (17.6°C).Heat index
Throughout September, the heat index is estimated at a hot 89.6°F (32°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Observations indicate that the heat index values are for shady locations with light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
The average relative humidity in September is 75%.Rainfall
In Rosa, during September, the rain falls for 15.5 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 180.2 rainfall days, and 42.24" (1073mm) of precipitation is accumulated.Snowfall
In Rosa, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:20 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 8.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 5 in September translates into these instructions:
Undertake precautions - Guarding against sun damage is counselled. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September in Rosa?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Rosa, AL
- Average high temperature in September: 82.9°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (49.1°F).
- Average low temperature in September: 63.7°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (34°F).
Average pressure in September
Rosa, 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
Rosa, AL
- Average wind speed in September: 5mph
The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Rosa, 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
Rosa, AL
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is August (4.41").
The driest month (with the least rainfall) is October (2.4").
Average rainfall days in September
Rosa, AL
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (22.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Rosa, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Rosa, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Rosa, 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Rosa, AL
- Average sunshine days in September: 13.1 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in September
Rosa, 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
Rosa, AL
- Average cloud cover in September: 32
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 32).
Average visibility in September
Rosa, AL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Rosa, Alabama, USA
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