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
The average high-temperature for September is a still tropical 86.7°F (30.4°C), closely aligning with the temperature of the preceding month. In September, the average low-temperature is a pleasant 69.8°F (21°C).Heat index
September's mean heat index is appraised at a sweltering 100.4°F (38°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. 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. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
The average relative humidity in September is 76%.Rainfall
In Graceville, during September, the rain falls for 17.8 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 180.8 rainfall days, and 37.95" (964mm) of precipitation is accumulated.Snowfall
In Graceville, snow does not fall in February through December.Daylight
In September, the average length of the day is 12h and 20min.On the first day of September, sunrise is at 6:18 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:28 pm CDT.
Sunshine
In Graceville, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 6 during September leads to these instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Graceville have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September in Graceville?
What is the UV index reading in September?
Average temperature in September
Graceville, FL
- Average high temperature in September: 86.7°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 (74.1°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in September
Graceville, 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
Graceville, FL
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Graceville, FL
- Average humidity in September: 76%
The month with the highest relative humidity is August (77%).
The months with the lowest relative humidity are May and October (70%).
Average rainfall in September
Graceville, FL
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is August (5.75").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in September
Graceville, FL
- Average rainfall days in September: 17.8 days
The month with the highest number of rainy days is July (25.1 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in September
Graceville, 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
Graceville, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Graceville, 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 4min
The months with the most sunshine are May, June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Graceville, FL
- Average sunshine days in September: 10.1 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (4.1 days).
Average UV index in September
Graceville, 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
Graceville, FL
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 43).
The months with the least cloud cover are May and October (Cloud cover 28).
Average visibility in September
Graceville, 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).
Graceville, Florida, USA
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