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 transition into September involves a small decrease in the average high-temperature, dipping slightly from a torrid 95.2°F (35.1°C) in August to a tropical 86.9°F (30.5°C). Throughout the month of September, Imperial sees a steady low-temperature average of 69.6°F (20.9°C).Heat index
In September, the heat index is appraised at a hot 89.6°F (32°C). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
September and December, with an average relative humidity of 52%, are the most humid months.Rainfall
In Imperial, in September, it is raining for 10.9 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, there are 75.5 rainfall days, and 10.87" (276mm) of precipitation is accumulated.Snowfall
In Imperial, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 7:27 am and sunset at 8:13 pm. On the last day of September, sunrise is at 7:44 am and sunset at 7:36 pm CDT.
Sunshine
In Imperial, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Imperial?
What are the most humid months?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Imperial have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Imperial, TX
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is June (95.4°F).
The month with the lowest average high temperature is January (58.1°F).
- Average low temperature in September: 69.6°F
The month with the highest average low temperature is August (75.9°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in September
Imperial, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.85"Hg).
Average wind speed in September
Imperial, TX
- Average wind speed in September: 11.2mph
The windiest month (with the highest average wind speed) is June (14.2mph).
The calmest month (with the lowest average wind speed) is December (9.6mph).
Average humidity in September
Imperial, TX
- Average humidity in September: 52%
The months with the highest relative humidity are September and December (52%).
The month with the lowest relative humidity is April (37%).
Average rainfall in September
Imperial, TX
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in September
Imperial, TX
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is September (10.9 days).
The month with the least rainy days is January (3 days).
Average snowfall in September
Imperial, TX
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Imperial, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (1.1 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
Imperial, 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 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The months with the least sunshine are November and December (Average sunshine: 6h and 54min).
Average sunshine days in September
Imperial, TX
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is January (27 days).
The month with the least sunshine days is September (16.7 days).
Average UV index in September
Imperial, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Imperial, TX
- Average cloud cover in September: 22
The month with the most cloud cover is September (Cloud cover 22).
The months with the least cloud cover are June and August (Cloud cover 13).
Average visibility in September
Imperial, 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).
Imperial, Texas, USA
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