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
September implies a soft temperature shift, with average high-temperatures reducing from August's torrid 96.4°F (35.8°C) to a hot 88.7°F (31.5°C). Nightly temperatures in Downsville drop to an average low of 70.7°F (21.5°C) in September.Heat index
The heat index value for September is computed to be a torrid 98.6°F (37°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In September, the average relative humidity is 65%.Rainfall
In Downsville, in September, during 14.9 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Downsville, during the entire year, the rain falls for 143.6 days and collects up to 29.33" (745mm) of precipitation.Snowfall
In Downsville, snow does not fall in April through December.Daylight
In Downsville, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 7:04 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:14 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 during September translates into the following guidance:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during 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 Downsville have in September?
When 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
Downsville, TX
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (76.3°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).
Average pressure in September
Downsville, TX
- Average pressure in September: 29.97"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
Downsville, TX
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is March (10.5mph).
The calmest month (with the lowest average wind speed) is September (6.9mph).
Average humidity in September
Downsville, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Downsville, TX
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is October (4.17").
The driest month (with the least rainfall) is November (1.65").
Average rainfall days in September
Downsville, TX
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Downsville, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Downsville, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Downsville, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Downsville, TX
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is January (21.2 days).
The months with the least sunshine days are April and September (13.1 days).
Average UV index in September
Downsville, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Downsville, TX
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Downsville, TX
- 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).
Downsville, Texas, USA
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