September weather forecastSirmans, FL
September
Weather in September
September, the first month of the autumn in Sirmans, is still a hot month, with an average temperature varying between 88°F (31.1°C) and 70°F (21.1°C).Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a still hot 88°F (31.1°C) from August's 91°F (32.8°C). Throughout September, an average low-temperature of 70°F (21.1°C) is experienced.Heat index
For September, the heat index is computed to be a blistering 104°F (40°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.It is crucial to understand that heat index figures are for shade and gentle wind conditions. 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 'feels like' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
The average relative humidity in September is 77%.Rainfall
In Sirmans, during September, the rain falls for 19.2 days and regularly aggregates up to 3.35" (85mm) of precipitation. Throughout the year, there are 181.5 rainfall days, and 34.76" (883mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
The average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 7:11 am and sunset at 7:57 pm. On the last day of September, sunrise is at 7:27 am and sunset at 7:20 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In Sirmans, Florida, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 in September translates into these instructions:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sirmans, FL
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (61.3°F).
- Average low temperature in September: 70°F
The month with the highest average low temperature is August (73.9°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in September
Sirmans, 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
Sirmans, FL
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Sirmans, FL
- Average humidity in September: 77%
The months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Sirmans, FL
- Average rainfall in September: 3.35"
The wettest month (with the highest rainfall) is August (5.2").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days in September
Sirmans, FL
- Average rainfall days in September: 19.2 days
The month with the highest number of rainy days is August (26.3 days).
The month with the least rainy days is November (7.5 days).
Average snowfall days in September
Sirmans, 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
Sirmans, FL
- Average daylight in September: 12h and 18min
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 24min
The months with the most sunshine are May and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Sirmans, FL
- Average sunshine days in September: 7.9 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is August (3.7 days).
Average UV index in September
Sirmans, FL
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Sirmans, FL
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are May and October (Cloud cover 30).
Average visibility in September
Sirmans, FL
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
