September weather forecastCallaghan, TX
September
Weather in September
September, the first month of the autumn in Callaghan, is still a tropical month, with an average temperature varying between 92.5°F (33.6°C) and 76.1°F (24.5°C).Temperature
In September, the average high-temperature marginally decreases from a sweltering 100°F (37.8°C) in August to a tropical 92.5°F (33.6°C). During September, Callaghan consistently records a temperature low averaging a warm 76.1°F (24.5°C).Heat index
September's mean heat index is evaluated at an extremely hot 105.8°F (41°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
The average relative humidity in September is 60%.Rainfall
The month with the most rainfall in Callaghan is September, when the rain falls for 12.9 days and typically aggregates up to 2.17" (55mm) of precipitation.Snowfall
In Callaghan, snow does not fall in March through November.Daylight
The average length of the day in September is 12h and 19min.On the first day of September in Callaghan, sunrise is at 7:16 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:24 pm CDT.
Sunshine
In Callaghan, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Callaghan is 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 7 suggests these recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Callaghan, TX
- Average high temperature in September: 92.5°F
The warmest month (with the highest average high temperature) is August (100°F).
The month with the lowest average high temperature is January (66.9°F).
- Average low temperature in September: 76.1°F
The month with the highest average low temperature is August (79.9°F).
The coldest month (with the lowest average low temperature) is January (50.2°F).
Average pressure in September
Callaghan, TX
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.86"Hg).
Average wind speed in September
Callaghan, TX
- Average wind speed in September: 10mph
The windiest month (with the highest average wind speed) is July (13.5mph).
The calmest month (with the lowest average wind speed) is December (8.9mph).
Average humidity in September
Callaghan, TX
- Average humidity in September: 60%
The month with the highest relative humidity is December (62%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Callaghan, TX
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is September (2.17").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in September
Callaghan, TX
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is September (12.9 days).
The month with the least rainy days is November (5.5 days).
Average snowfall days in September
Callaghan, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 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
Callaghan, TX
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Callaghan, TX
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is September (15.1 days).
Average UV index in September
Callaghan, TX
- Average UV index in September: 7
The months with the highest UV index are July and August (UV index 8).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in September
Callaghan, TX
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Callaghan, 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).
