September weather forecastMonticello, FL
September
Weather in September
September, the first month of the autumn in Monticello, is also a hot month, with an average temperature ranging between max 87.6°F (30.9°C) and min 69.4°F (20.8°C).Temperature
September's average high-temperature is a still tropical 87.6°F (30.9°C), maintaining a close comparison with August's 90.9°F (32.7°C). Throughout September, Monticello encounters an average temperature drop to a pleasant 69.4°F (20.8°C).Heat index
For September, the heat index is calculated to be an extremely hot 104°F (40°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. 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.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
The months with the highest humidity are August, September and December, with an average relative humidity of 78%.Rainfall
In September, the rain falls for 18.1 days. Throughout September, 2.76" (70mm) of precipitation is accumulated. In Monticello, during the entire year, the rain falls for 168.8 days and collects up to 30.71" (780mm) of precipitation.Snowfall
In Monticello, snow does not fall in January, April through December.Daylight
The average length of the day in September in Monticello is 12h and 20min.On the first day of the month, sunrise is at 7:12 am and sunset at 7:58 pm. On the last day of September, in Monticello, sunrise is at 7:28 am and sunset at 7:21 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Monticello, 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 rays for the ordinary person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Monticello, FL
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (60.6°F).
- Average low temperature in September: 69.4°F
The month with the highest average low temperature is August (73.8°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).
Average pressure in September
Monticello, 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
Monticello, FL
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Monticello, FL
- Average humidity in September: 78%
The months with the highest relative humidity are August, September and December (78%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Monticello, FL
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is August (4.37").
The driest month (with the least rainfall) is November (1.02").
Average rainfall days in September
Monticello, FL
- Average rainfall days in September: 18.1 days
The months with the highest number of rainy days are July and August (24.1 days).
The month with the least rainy days is November (6.9 days).
Average snowfall days in September
Monticello, FL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and March (0.1 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Monticello, 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 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Monticello, FL
- Average sunshine days in September: 9.9 days
The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is August (5.4 days).
Average UV index in September
Monticello, FL
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Monticello, FL
- Average cloud cover in September: 35
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 30).
Average visibility in September
Monticello, FL
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
