September weather forecastOdessa, TX
September
Weather in September
September brings relief from the intense summer heat. However, it doesn't immediately cool down, maintaining relatively high temperatures compared to most regions. The faded heat of summer lingers; nevertheless, a decrease in daylight hours is noticeable. A standout feature of September’s weather is the leap in rainfall from August’s 0.94" (24mm) to September's 1.81" (46mm). This statistic makes September the wettest month of the year, signaling the onset of fall.Temperature
The start of September involves a subtle temperature drop, shifting from a tropical 94.1°F (34.5°C) in August to a warm 85.3°F (29.6°C). Odessa observes an average low-temperature of 68°F (20°C) during September.Heat index
For most parts of September, the heat index is estimated at a hot 87.8°F (31°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.Observations indicate that the heat index values are for shady locations with light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
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 Odessa, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 7:25 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 7:35 pm CDT.
Sunshine
In Odessa, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 6 during September translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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
Odessa, 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).
