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
In September, the average high-temperature marginally drops from a fiery hot 95.5°F (35.3°C) in August to a tropical 86.9°F (30.5°C). In September, Impact reports a consistent average low-temperature of 68.5°F (20.3°C) during the nights.Heat index
The heat index value during September is appraised at a tropical 91.4°F (33°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.Understand that the heat index values take into account shaded locations and mild winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
In September, the average relative humidity is 58%.Rainfall
September is the month with the most rainfall. Rain falls for 11.2 days and accumulates 2.13" (54mm) of precipitation.Snowfall
In Impact, snow does not fall in April through October.Daylight
In Impact, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:14 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:24 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 6 translates into these guidelines:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
What is the rainiest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Impact have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September in Impact?
Average temperature in September
Impact, TX
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The months with the lowest average high temperature are January and December (56.3°F).
- Average low temperature in September: 68.5°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in September
Impact, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Impact, TX
- Average wind speed in September: 9.5mph
The windiest month (with the highest average wind speed) is April (13.7mph).
The calmest month (with the lowest average wind speed) is September (9.5mph).
Average humidity in September
Impact, TX
- Average humidity in September: 58%
The month with the highest relative humidity is May (59%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Impact, TX
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is September (2.13").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in September
Impact, TX
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is May (11.7 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in September
Impact, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Impact, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 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
Impact, TX
- Average daylight in September: 12h and 2min
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 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Impact, TX
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is May (16.3 days).
Average UV index in September
Impact, 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 3).
Average cloud cover in September
Impact, TX
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Impact, 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).
Impact, Texas, USA
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