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 witnesses a gentle descent in average high-temperature, descending from August's torrid 96.6°F (35.9°C) to a tropical 89.2°F (31.8°C). Knippa records an average temperature drop to a pleasant 70.9°F (21.6°C) in September.Heat index
For September, the heat index is calculated to be a sweltering 100.4°F (38°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. 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 largely 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.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
The average relative humidity in September is 64%.Rainfall
In Knippa, Texas, in September, during 15.2 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 130.9 rainfall days, and 17.72" (450mm) of precipitation is accumulated.Snowfall
In Knippa, snow does not fall in March through December.Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 7:16 am and sunset at 8:00 pm. On the last day of September, in Knippa, sunrise is at 7:31 am and sunset at 7:24 pm CDT.
Sunshine
The average sunshine in September is 8.4h.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 exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
How hot is it in Knippa in September?
What is the average humidity in September in Knippa?
How much does it rain in Knippa in September?
When it does not snow in Knippa?
How many hours of daylight does Knippa have in September?
When are sunrise and sunset in September in Knippa?
How long on average sun shines in September in Knippa?
What is the UV index reading in September in Knippa?
Average temperature in September
Knippa, TX
- Average high temperature in September: 89.2°F
The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (62.1°F).
- Average low temperature in September: 70.9°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (43.9°F).
Average pressure in September
Knippa, TX
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Knippa, TX
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is May (9.8mph).
The calmest months (with the lowest average wind speed) are September and December (7.1mph).
Average humidity in September
Knippa, TX
- Average humidity in September: 64%
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Knippa, TX
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is November (0.79").
Average rainfall days in September
Knippa, TX
- Average rainfall days in September: 15.2 days
The months with the highest number of rainy days are May and September (15.2 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Knippa, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Knippa, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Knippa, 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 month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are November and December (Average sunshine: 5h and 36min).
Average sunshine days in September
Knippa, TX
- Average sunshine days in September: 13 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is September (13 days).
Average UV index in September
Knippa, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Knippa, TX
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Knippa, 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).
Knippa, Texas, USA
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