September weather forecastJoshua, TX
September
Weather in September
The first month of the autumn, September, is also a hot month in Joshua, Texas, with an average temperature varying between 87.3°F (30.7°C) and 69.1°F (20.6°C).Temperature
The beginning of September brings a minor change in the average high-temperature, shifting from a sweltering 95.5°F (35.3°C) in August to a hot 87.3°F (30.7°C). In September, the average low-temperature in Joshua records at an agreeable 69.1°F (20.6°C) during the nights.Heat index
During September, the heat index is appraised at a torrid 95°F (35°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
The average relative humidity in September in Joshua is 65%.Rainfall
In Joshua, in September, it is raining for 13.9 days, with typically 2.8" (71mm) of accumulated precipitation. In Joshua, during the entire year, the rain falls for 135 days and collects up to 29.92" (760mm) of precipitation.Snowfall
January, April through October and December are months without snowfall in Joshua, Texas.Daylight
In September, the average length of the day in Joshua, Texas, is 12h and 22min.On the first day of September in Joshua, sunrise is at 7:05 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:15 pm CDT.
Sunshine
In September, the average sunshine in Joshua is 8.5h.UV index
In Joshua, Texas, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, an average UV index of 6 transforms into the following instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Joshua, TX
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (55.8°F).
- Average low temperature in September: 69.1°F
The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in September
Joshua, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Joshua, TX
- Average wind speed in September: 6.8mph
The windiest months (with the highest average wind speed) are March and April (10.6mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Joshua, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Joshua, TX
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is October (4.21").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in September
Joshua, TX
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in September
Joshua, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are January, April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Joshua, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Joshua, TX
- Average daylight in September: 12h and 24min
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: 8h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Joshua, TX
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is May (13.4 days).
Average UV index in September
Joshua, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Joshua, TX
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Joshua, 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).





