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 arrival of September corresponds with a light shift in temperature, down from a fiery hot 95.5°F (35.3°C) in August to a hot 88.2°F (31.2°C). Flatonia's September nights cool down to an average low-temperature of 71.4°F (21.9°C).Heat index
September's heat index is estimated at a very hot 102.2°F (39°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.Consider that heat index readings are for situations in the shade and light wind. 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 'apparent temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating 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 73%.Rainfall
In September, the rain falls for 16.5 days. Throughout September, 3.11" (79mm) of precipitation is accumulated. In Flatonia, during the entire year, the rain falls for 158.8 days and collects up to 25.98" (660mm) of precipitation.Snowfall
March through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 7:06 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 CDT.
Sunshine
In Flatonia, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 6 in September transforms into the following instructions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Flatonia have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Flatonia, TX
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (60.3°F).
- Average low temperature in September: 71.4°F
The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (44.1°F).
Average pressure in September
Flatonia, TX
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Flatonia, TX
- Average wind speed in September: 6mph
The windiest months (with the highest average wind speed) are February, March and April (8.6mph).
The calmest month (with the lowest average wind speed) is September (6mph).
Average humidity in September
Flatonia, TX
- Average humidity in September: 73%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Flatonia, TX
- Average rainfall in September: 3.11"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in September
Flatonia, TX
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is September (16.5 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in September
Flatonia, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Flatonia, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.4 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
Flatonia, TX
- 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 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Flatonia, TX
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in September
Flatonia, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Flatonia, TX
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Flatonia, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, August, September, October, November and December (6mi).
The months with the lowest visibility are April, May, June and July (5mi).
Flatonia, Texas, USA
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