September weather forecastPlains, TX
September
Weather in September
The first month of the autumn, September, is still a warm month in Plains, Texas, with temperature in the range of an average low of 64.4°F (18°C) and an average high of 83.1°F (28.4°C).Temperature
September reveals a small adjustment in temperature, transitioning from an average high of a hot 91.9°F (33.3°C) in August to a moderately hot 83.1°F (28.4°C). Plains's nighttime temperature during September is consistently averaged at a comfortable 64.4°F (18°C).Heat index
In September, the heat index is estimated at 84.2°F (29°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
September is the most humid month in Plains, with an average relative humidity of 54%.Rainfall
The month with the most rainfall is September, when the rain falls for 12.1 days and typically aggregates up to 2.17" (55mm) of precipitation.Snowfall
In Plains, snow does not fall in May through September.Daylight
In Plains, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:26 am and sunset at 8:15 pm. On the last day of September, in Plains, Texas, sunrise is at 7:45 am and sunset at 7:36 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In Plains, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 6 in September suggests the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Plains, TX
- Average high temperature in September: 83.1°F
The warmest months (with the highest average high temperature) are June, July and August (91.9°F).
The month with the lowest average high temperature is December (52.9°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).
Average pressure in September
Plains, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Plains, TX
- Average wind speed in September: 9.9mph
The windiest month (with the highest average wind speed) is April (13.3mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).
Average humidity in September
Plains, TX
- Average humidity in September: 54%
The month with the highest relative humidity is September (54%).
The month with the lowest relative humidity is April (34%).
Average rainfall in September
Plains, 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 (0.28").
Average rainfall days in September
Plains, TX
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is September (12.1 days).
The month with the least rainy days is November (2.9 days).
Average snowfall in September
Plains, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Plains, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (2.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Plains, TX
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 6min
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 54min).
Average sunshine days in September
Plains, TX
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is January (26.4 days).
The month with the least sunshine days is September (14.4 days).
Average UV index in September
Plains, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Plains, TX
- Average cloud cover in September: 23
The month with the most cloud cover is September (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 13).
Average visibility in September
Plains, 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).
