September weather forecastHartley, TX
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Hartley, Texas, with an average temperature fluctuating between 82.4°F (28°C) and 61.2°F (16.2°C).Temperature
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a hot 90.1°F (32.3°C) to a moderately hot 82.4°F (28°C). In Hartley, in September, the average low-temperature is an enjoyable 61.2°F (16.2°C).Heat index
The heat index for September is calculated to be 84.2°F (29°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Humidity
In Hartley, Texas, the average relative humidity in September is 51%.Rainfall
In Hartley, in September, during 9.9 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Hartley, during the entire year, the rain falls for 83.2 days and collects up to 12.01" (305mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Hartley, the average length of the day in September is 12h and 23min.On the first day of September in Hartley, sunrise is at 7:22 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 7:34 pm CDT.
Sunshine
In Hartley, the average sunshine in September is 9.4h.UV index
In Hartley, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hartley, TX
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is December (47.7°F).
- Average low temperature in September: 61.2°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is December (28.8°F).
Average pressure in September
Hartley, TX
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Hartley, TX
- Average wind speed in September: 11.4mph
The windiest month (with the highest average wind speed) is April (13.4mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).
Average humidity in September
Hartley, TX
- Average humidity in September: 51%
The month with the highest relative humidity is December (56%).
The month with the lowest relative humidity is April (40%).
Average rainfall in September
Hartley, TX
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is July (2.17").
The driest months (with the least rainfall) are February and November (0.35").
Average rainfall days in September
Hartley, TX
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in September
Hartley, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hartley, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hartley, TX
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 24min
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 48min).
Average sunshine days in September
Hartley, TX
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is July (12.7 days).
Average UV index in September
Hartley, TX
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Hartley, TX
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 14).
Average visibility in September
Hartley, 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).
