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
Marianna's average high-temperature in September is a still tropical 86.9°F (30.5°C), marking an insignificant difference from the 90.3°F (32.4°C) of August. Marianna throughout September, records an average low-temperature of 69.8°F (21°C).Heat index
The heat index in September is evaluated at a very hot 100.4°F (38°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.For clarity, heat index numbers account for light winds and areas under shade. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
In Marianna, the average relative humidity in September is 76%.Rainfall
In September, in Marianna, the rain falls for 18.5 days. Throughout September, 2.87" (73mm) of precipitation is accumulated. In Marianna, during the entire year, the rain falls for 185.3 days and collects up to 37.24" (946mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in September in Marianna is 12h and 20min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:03 pm. On the last day of September, sunrise is at 6:34 am and sunset at 6:26 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September in Marianna is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 6 during September translates into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Marianna in September?
What is the average humidity in September in Marianna?
How much does it rain in Marianna in September?
When it does not snow in Marianna?
What is the average length of the day in September in Marianna?
What time are sunrise and sunset in September in Marianna?
How long on average sun shines in September in Marianna?
What is the UV index reading in September in Marianna?
Average temperature in September
Marianna, FL
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (59.2°F).
- Average low temperature in September: 69.8°F
The month with the highest average low temperature is August (74.5°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in September
Marianna, FL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in September
Marianna, FL
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are February and March (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Marianna, FL
- Average humidity in September: 76%
The months with the highest relative humidity are August and December (77%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Marianna, FL
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is August (5.55").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in September
Marianna, FL
- Average rainfall days in September: 18.5 days
The months with the highest number of rainy days are July and August (25.3 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in September
Marianna, FL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Marianna, FL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Marianna, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in September
Marianna, FL
- Average sunshine days in September: 9.4 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is August (3.8 days).
Average UV index in September
Marianna, FL
- Average UV index in September: 6
The months with the highest UV index are May, 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
Marianna, FL
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are May and October (Cloud cover 27).
Average visibility in September
Marianna, FL
- 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).
Marianna, Florida, USA
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