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 is marked by a minor reduction in average high-temperature, sliding from a very hot 96.6°F (35.9°C) in August to a tropical 88.7°F (31.5°C). Selma encounters a steady low-temperature average of 71.6°F (22°C) throughout the month of September.Heat index
The heat index for September is estimated at a torrid 100.4°F (38°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The average relative humidity in September in Selma is 67%.Rainfall
In Selma, in September, it is raining for 15.9 days, with typically 3.19" (81mm) of accumulated precipitation. In Selma, during the entire year, the rain falls for 155.9 days and collects up to 22.76" (578mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:54 pm. On the last day of September, in Selma, Texas, sunrise is at 7:26 am and sunset at 7:19 pm CDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index in Selma is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 6 during September leads to these instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. 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. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
Is it hot in Selma during September?
What is the average humidity in September in Selma?
How many days does it rain in September in Selma?
When it does not snow in Selma?
How many hours of daylight does Selma have in September?
When are sunrise and sunset in September in Selma?
How many hours of sunshine does Selma have in September?
What is the UV index reading in September in Selma?
Average temperature in September
Selma, TX
- Average high temperature in September: 88.7°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 (61.2°F).
- Average low temperature in September: 71.6°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in September
Selma, TX
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Selma, TX
- Average wind speed in September: 6.4mph
The windiest months (with the highest average wind speed) are February, March, April and May (8.8mph).
The calmest month (with the lowest average wind speed) is September (6.4mph).
Average humidity in September
Selma, TX
- Average humidity in September: 67%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Selma, TX
- Average rainfall in September: 3.19"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in September
Selma, TX
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and August (9.3 days).
Average snowfall in September
Selma, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (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
Selma, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Selma, 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 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Selma, TX
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in September
Selma, 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 3).
Average cloud cover in September
Selma, TX
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Selma, 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).
Selma, Texas, USA
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