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
Forney in September experiences a gentle temperature dip, with average high-temperatures reducing from a torrid 95.2°F (35.1°C) in August to a hot 87.8°F (31°C). September in Forney is noted for a mean low-temperature of 69.4°F (20.8°C).Heat index
For September, the heat index is computed to be a fiery hot 96.8°F (36°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.Heat index determinations are made taking into account the shade and light air movements. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
In September, the average relative humidity is 66%.Rainfall
In Forney, during September, the rain falls for 14.3 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, there are 141.8 rainfall days, and 31.54" (801mm) of precipitation is accumulated.Snowfall
In Forney, snow does not fall in March through December.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 7:01 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:11 pm CDT.
Sunshine
In Forney, Texas, the average sunshine in September is 8.5h.UV index
In Forney, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
How hot is September in Forney?
What is the average humidity in September in Forney?
How many days does it rain in September in Forney?
When it does not snow in Forney?
How many hours of daylight does Forney have in September?
When are sunrise and sunset in September in Forney?
How long on average sun shines in September in Forney?
How high is the UV index in September in Forney?
Average temperature in September
Forney, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (95.2°F).
The month with the lowest average high temperature is January (54.3°F).
- Average low temperature in September: 69.4°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Forney, 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
Forney, TX
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is March (9.6mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).
Average humidity in September
Forney, TX
- Average humidity in September: 66%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Forney, TX
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is October (4.25").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in September
Forney, TX
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Forney, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Forney, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Forney, 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 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Forney, TX
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is September (13.7 days).
Average UV index in September
Forney, TX
- Average UV index in September: 6
The months with the highest UV index are 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
Forney, TX
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Forney, 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).
Forney, Texas, USA
Weather forecast for your location
2. Allow the app to use your location
