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
The arrival of September corresponds with a shift in temperature, down from a tropical 93°F (33.9°C) in August to a warm 84°F (28.9°C). During the nights in September, O'Donnell experiences a consistent average temperature of 64.9°F (18.3°C).Heat index
September's average heat index is estimated at a tropical 86°F (30°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
The most humid month is September, with an average relative humidity of 56%.Rainfall
The month with the most rainfall is September, when the rain falls for 12 days and typically aggregates up to 2.09" (53mm) of precipitation.Snowfall
In O'Donnell, snow does not fall in April through September.Daylight
The average length of the day in September in O'Donnell is 12h and 22min.On the first day of September, sunrise is at 7:22 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:32 pm CDT.
Sunshine
The average sunshine in September in O'Donnell is 8.9h.UV index
In O'Donnell, Texas, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
How hot does it get in O'Donnell in September?
What is the most humid month in O'Donnell?
What is the average humidity in September in O'Donnell?
What is the rainiest month in O'Donnell?
How much does it rain in O'Donnell in September?
When it does not snow in O'Donnell?
Does it snow in O'Donnell in September?
What is the average length of the day in September in O'Donnell?
What time are sunrise and sunset in September in O'Donnell?
How long on average sun shines in September in O'Donnell?
What is the UV index intensity in September in O'Donnell?
Average temperature in September
O'Donnell, TX
- Average high temperature in September: 84°F
The warmest month (with the highest average high temperature) is August (93°F).
The month with the lowest average high temperature is December (53.6°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in September
O'Donnell, 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
O'Donnell, TX
- Average wind speed in September: 9.6mph
The windiest month (with the highest average wind speed) is April (13.2mph).
The calmest month (with the lowest average wind speed) is August (9.4mph).
Average humidity in September
O'Donnell, TX
- Average humidity in September: 56%
The month with the highest relative humidity is September (56%).
The month with the lowest relative humidity is April (39%).
Average rainfall in September
O'Donnell, TX
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is September (2.09").
The driest month (with the least rainfall) is February (0.35").
Average rainfall days in September
O'Donnell, 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
O'Donnell, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
O'Donnell, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (2.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
O'Donnell, 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 5min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
O'Donnell, TX
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (27.3 days).
The month with the least sunshine days is September (15.5 days).
Average UV index in September
O'Donnell, 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
O'Donnell, TX
- Average cloud cover in September: 24
The month with the most cloud cover is September (Cloud cover 24).
The months with the least cloud cover are June and August (Cloud cover 15).
Average visibility in September
O'Donnell, 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).
O'Donnell, Texas, USA
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