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 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
Theressa experiences an average high-temperature of a still hot 88.2°F (31.2°C) in September, marking an insignificant shift from 90.9°F (32.7°C) in August. Throughout the September nights, Theressa encounters a low-temperature of 72.3°F (22.4°C).Heat index
September's heat index is computed to be an extremely hot 105.8°F (41°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.
Humidity
The months with the highest humidity are August and September, with an average relative humidity of 78%.Rainfall
In Theressa, in September, during 21.7 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. In Theressa, during the entire year, the rain falls for 188.6 days and collects up to 33.5" (851mm) of precipitation.Snowfall
In Theressa, snow does not fall in January through November.Daylight
The average length of the day in September in Theressa, Florida, is 12h and 20min.On the first day of the month, sunrise is at 7:05 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:14 pm EDT.
Sunshine
In Theressa, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September in Theressa is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 during September translates into the following guidance:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
How hot is it in Theressa in September?
What are the most humid months in Theressa?
What is the average humidity in September in Theressa?
How much does it rain in Theressa in September?
When it does not snow in Theressa?
How many hours of daylight does Theressa have in September?
When are sunrise and sunset in September in Theressa?
How many hours of sunshine does Theressa have in September?
What is the UV index reading in September in Theressa?
Average temperature in September
Theressa, FL
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (64.2°F).
- Average low temperature in September: 72.3°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (46.6°F).
Average pressure in September
Theressa, FL
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in September
Theressa, FL
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in September
Theressa, FL
- Average humidity in September: 78%
The months with the highest relative humidity are August and September (78%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Theressa, FL
- Average rainfall in September: 3.15"
The wettest month (with the highest rainfall) is July (5.31").
The driest months (with the least rainfall) are January and November (1.5").
Average rainfall days in September
Theressa, FL
- Average rainfall days in September: 21.7 days
The month with the highest number of rainy days is August (25.9 days).
The month with the least rainy days is November (9 days).
Average snowfall days in September
Theressa, FL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Theressa, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Theressa, FL
- Average sunshine days in September: 6.9 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (3.6 days).
Average UV index in September
Theressa, 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 4).
Average cloud cover in September
Theressa, FL
- Average cloud cover in September: 34
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are May and October (Cloud cover 31).
Average visibility in September
Theressa, FL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).
Theressa, Florida, USA
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