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
September witnesses a gentle descent in average high-temperature, descending from August's very hot 96.4°F (35.8°C) to a tropical 88.7°F (31.5°C). Throughout the September nights, Riesel encounters a low-temperature of 70.7°F (21.5°C).Heat index
Throughout September, the heat index is appraised at a torrid 100.4°F (38°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
In Riesel, the average relative humidity in September is 66%.Rainfall
In Riesel, in September, it is raining for 12.3 days, with typically 1.1" (28mm) of accumulated precipitation. In Riesel, Texas, during the entire year, the rain falls for 113.1 days and collects up to 14.17" (360mm) of precipitation.Snowfall
In Riesel, snow does not fall in January, March through December.Daylight
In September, the average length of the day is 12h and 21min.On the first day of September in Riesel, sunrise is at 7:03 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:13 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September in Riesel is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 6 in September transforms into this advice:
Deter overexposure. Protecting against the sun's effects is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
How hot is it in Riesel in September?
What is the average humidity in September in Riesel?
How many days does it rain in September in Riesel?
When it does not snow in Riesel?
What is the average length of the day in September in Riesel?
What time are sunrise and sunset in September in Riesel?
How long on average sun shines in September in Riesel?
What is the UV index reading in September in Riesel?
Average temperature in September
Riesel, TX
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (57°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).
Average pressure in September
Riesel, 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 (29.92"Hg).
Average wind speed in September
Riesel, TX
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in September
Riesel, TX
- Average humidity in September: 66%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Riesel, TX
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in September
Riesel, TX
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (12.9 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Riesel, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Riesel, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.6 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
Riesel, TX
- Average daylight in September: 12h and 2min
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 4min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Riesel, TX
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (14.8 days).
Average UV index in September
Riesel, 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
Riesel, TX
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Riesel, 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).
Riesel, Texas, USA
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