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
A minor decrease in the average high-temperature is observed during September, shifting from a tropical 94.3°F (34.6°C) in August to a still hot 88.2°F (31.2°C). During September nights, De Kalb witnesses a consistent average temperature of 66.7°F (19.3°C).Heat index
In September, the heat index is calculated to be a torrid 100.4°F (38°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
In De Kalb, the average relative humidity in September is 69%.Rainfall
The month with the least rainfall in De Kalb is September, when the rain falls for 11.6 days and typically collects 2.36" (60mm) of precipitation.Snowfall
In De Kalb, snow does not fall in April through November.Daylight
In September, the average length of the day in De Kalb is 12h and 22min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:03 pm CDT.
Sunshine
In De Kalb, Texas, the average sunshine in September is 9.2h.UV index
In De Kalb, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 6 during September translates into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
How hot is September in De Kalb?
What is the average humidity in September in De Kalb?
What is the driest month in De Kalb?
How much does it rain in De Kalb in September?
When it does not snow in De Kalb?
How many hours of daylight does De Kalb have in September?
When is the sunrise / sunset in September in De Kalb?
How many hours of sunshine does De Kalb have in September?
What is the UV index intensity in September in De Kalb?
Average temperature in September
De Kalb, TX
- Average high temperature in September: 88.2°F
The warmest month (with the highest average high temperature) is August (94.3°F).
The month with the lowest average high temperature is January (52.3°F).
- Average low temperature in September: 66.7°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in September
De Kalb, TX
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
De Kalb, TX
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
De Kalb, TX
- Average humidity in September: 69%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
De Kalb, TX
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is September (2.36").
Average rainfall days in September
De Kalb, TX
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in September
De Kalb, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
De Kalb, TX
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
De Kalb, 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: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
De Kalb, TX
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is January (18.5 days).
The month with the least sunshine days is February (13.3 days).
Average UV index in September
De Kalb, 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 2).
Average cloud cover in September
De Kalb, TX
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
De Kalb, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
De Kalb, Texas, USA
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