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
As September commences, the average high-temperature shows a reduction, transitioning from a fiery hot 97.3°F (36.3°C) in August to a tropical 87.6°F (30.9°C). Nighttime temperature in Knox City, Texas, dips to a mean of 69.4°F (20.8°C) during September.Heat index
The average heat index in September is estimated at a tropical 93.2°F (34°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Heat index determinations are made taking into account the shade and light air movements. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
In Knox City, the average relative humidity in September is 56%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 92.8 rainfall days, and 17.4" (442mm) of precipitation is accumulated.Snowfall
In Knox City, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September in Knox City, sunrise is at 7:13 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:24 pm CDT.
Sunshine
In Knox City, the average sunshine in September is 8.7h.UV index
In Knox City, Texas, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
How hot is September in Knox City?
What is the average humidity in September in Knox City?
How much does it rain in Knox City in September?
When it does not snow in Knox City?
What is the average length of the day in September in Knox City?
What time are sunrise and sunset in September in Knox City?
How many hours of sunshine does Knox City have in September?
What is the UV index reading in September in Knox City?
Average temperature in September
Knox City, TX
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is August (97.3°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in September: 69.4°F
The month with the highest average low temperature is July (76.8°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).
Average pressure in September
Knox City, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Knox City, TX
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is April (13mph).
The calmest month (with the lowest average wind speed) is September (9.4mph).
Average humidity in September
Knox City, TX
- Average humidity in September: 56%
The month with the highest relative humidity is December (57%).
The month with the lowest relative humidity is August (45%).
Average rainfall in September
Knox City, TX
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in September
Knox City, TX
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is September (11.8 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in September
Knox City, TX
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Knox City, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Knox City, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).
Average sunshine days in September
Knox City, TX
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is January (26.3 days).
The month with the least sunshine days is September (16.2 days).
Average UV index in September
Knox City, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Knox City, TX
- Average cloud cover in September: 26
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Knox City, 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).
Knox City, Texas, USA
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