September weather forecastArlington, TX
September
Weather in September
September signifies the dawn of fall, with a slight drop in temperatures compared to the peak summer months. Paving the way for a more pleasant climate, the weather makes a slow transition from the extremes of summer. As the rain lessens, the landscape of Arlington transforms, enabling residents to relish the unique blend of summer and autumn. Increased visibility up to 6 miles allows for picturesque views of the transforming flora. The incidence of winds picks a bit to 6.6mph (10.6km/h), offering coolness to the setting festive atmosphere.Temperature
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a fiery hot 95.9°F (35.5°C) in August to a hot 88°F (31.1°C). An average nighttime temperature of 69.6°F (20.9°C) is noted during the month of September.Heat index
In September, the heat index is computed to be a torrid 96.8°F (36°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.Note that heat index values are valued for light wind and location in the shade. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. 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.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In Arlington, the average relative humidity in September is 63%.Rainfall
In Arlington, during September, the rain falls for 14.4 days and regularly aggregates up to 2.64" (67mm) of precipitation. In Arlington, during the entire year, the rain falls for 136.1 days and collects up to 29.72" (755mm) of precipitation.Snowfall
In Arlington, snow does not fall in March through October.Daylight
In Arlington, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:52 pm. On the last day of September, in Arlington, sunrise is at 7:22 am and sunset at 7:13 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, an average UV index of 6 transforms into the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arlington, TX
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (55.2°F).
- Average low temperature in September: 69.6°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in September
Arlington, 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 (29.91"Hg).
Average wind speed in September
Arlington, TX
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in September
Arlington, TX
- Average humidity in September: 63%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Arlington, TX
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is October (3.98").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in September
Arlington, TX
- Average rainfall days in September: 14.4 days
The months with the highest number of rainy days are May and September (14.4 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
Arlington, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Arlington, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Arlington, 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: 8h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Arlington, TX
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (13.7 days).
Average UV index in September
Arlington, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Arlington, TX
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Arlington, 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).
