September weather forecastMiddle River, FL
September
Weather in September
The first month of the autumn, September, is still a tropical month in Middle River, Florida, with temperature in the range of an average low of 79.7°F (26.5°C) and an average high of 86.4°F (30.2°C).Temperature
Middle River measures an average high-temperature of a still tropical 86.4°F (30.2°C) in September, nearly consistent with the preceding month. Middle River's nocturnal readings in September exhibit minimal variation from the daytime temperatures, averaging at a moderately hot 79.7°F (26.5°C).Heat index
For September, the heat index is appraised at a torrid 98.6°F (37°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Always consider that heat index estimations are for light winds and places in the shade. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
The average relative humidity in September is 74%.Rainfall
In September, the rain falls for 18.1 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. Throughout the year, in Middle River, there are 125.3 rainfall days, and 8.35" (212mm) of precipitation is accumulated.Daylight
In Middle River, the average length of the day in September is 12h and 18min.On the first day of September, sunrise is at 7:01 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 7:08 pm EDT.
Sunshine
In September, the average sunshine is 9h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 7 in September transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Middle River, FL
- Average high temperature in September: 86.4°F
The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (73°F).
- Average low temperature in September: 79.7°F
The month with the highest average low temperature is August (81.9°F).
The coldest month (with the lowest average low temperature) is January (63.1°F).
Average pressure in September
Middle River, FL
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in September
Middle River, FL
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is March (10.5mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in September
Middle River, FL
- Average humidity in September: 74%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (68%).
Average rainfall in September
Middle River, FL
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in September
Middle River, FL
- Average rainfall days in September: 18.1 days
The month with the highest number of rainy days is September (18.1 days).
The month with the least rainy days is February (5.1 days).
Average daylight in September /
Average sunshine in September
Middle River, FL
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The months with the least sunshine are November and December (Average sunshine: 6h and 24min).
Average sunshine days in September
Middle River, FL
- Average sunshine days in September: 5.7 days
The month with the most sunshine days is March (22 days).
The month with the least sunshine days is September (5.7 days).
Average UV index in September
Middle River, FL
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in September
Middle River, FL
- Average cloud cover in September: 30
The month with the most cloud cover is October (Cloud cover 34).
The months with the least cloud cover are March, April, May and July (Cloud cover 27).
Average visibility in September
Middle River, 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).





