September weather forecastPenwell, TX
September
Weather in September
September, the first month of the autumn in Penwell, is still a warm month, with an average temperature varying between 85.3°F (29.6°C) and 68°F (20°C).Temperature
With September's onset, the weather reveals a slight temperature decrease, transitioning from a hot 94.1°F (34.5°C) in August to a warm 85.3°F (29.6°C). September's average low-temperature reading in Penwell, Texas, settles at an agreeable 68°F (20°C).Heat index
During September, the heat index is evaluated at a hot 87.8°F (31°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
With an average relative humidity of 53%, September is the most humid month.Rainfall
September is the month with the most rainfall. Rain falls for 12 days and accumulates 1.81" (46mm) of precipitation.Snowfall
In Penwell, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 21min.On the first day of September, sunrise is at 7:26 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 7:36 pm CDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Penwell, TX
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in September
Penwell, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Penwell, TX
- Average wind speed in September: 10.8mph
The windiest month (with the highest average wind speed) is April (13.9mph).
The calmest month (with the lowest average wind speed) is December (10.3mph).
Average humidity in September
Penwell, TX
- Average humidity in September: 53%
The month with the highest relative humidity is September (53%).
The month with the lowest relative humidity is April (37%).
Average rainfall in September
Penwell, TX
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in September
Penwell, TX
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is September (12 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in September
Penwell, TX
- Average snowfall in September: 0"
The months with the highest snowfall are November and December (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Penwell, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (2.3 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
Penwell, TX
- Average daylight in September: 12h and 18min
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: 9h and 6min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
Penwell, TX
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (27.1 days).
The month with the least sunshine days is September (15.5 days).
Average UV index in September
Penwell, 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
Penwell, TX
- Average cloud cover in September: 23
The month with the most cloud cover is September (Cloud cover 23).
The months with the least cloud cover are June and August (Cloud cover 14).
Average visibility in September
Penwell, 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).
