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
Fort Griffin's average high-temperature decreases in September, falling from a fiery hot 96.6°F (35.9°C) in August to a tropical 87.3°F (30.7°C). Fort Griffin sees an average low-temperature of 68.7°F (20.4°C) during September.Heat index
The average heat index in September is evaluated at a tropical 93.2°F (34°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for 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.
Humidity
In September, the average relative humidity in Fort Griffin is 59%.Rainfall
In Fort Griffin, in September, during 12.1 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 98.6 rainfall days, and 17.64" (448mm) of precipitation is accumulated.Snowfall
In Fort Griffin, snow does not fall in April through October.Daylight
In Fort Griffin, the average length of the day in September is 12h and 22min.On the first day of September in Fort Griffin, sunrise is at 7:11 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:22 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
How hot is September in Fort Griffin?
What is the average humidity in September in Fort Griffin?
How many days does it rain in September in Fort Griffin?
When it does not snow in Fort Griffin?
What is the average length of the day in September in Fort Griffin?
When is the sunrise / sunset in September in Fort Griffin?
How many hours of sunshine does Fort Griffin have in September?
How high is the UV index in September in Fort Griffin?
Average temperature in September
Fort Griffin, TX
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is December (56.1°F).
- Average low temperature in September: 68.7°F
The months with the highest average low temperature are July and August (75.2°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in September
Fort Griffin, 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
Fort Griffin, TX
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is September (8.8mph).
Average humidity in September
Fort Griffin, TX
- Average humidity in September: 59%
The month with the highest relative humidity is May (61%).
The month with the lowest relative humidity is August (48%).
Average rainfall in September
Fort Griffin, TX
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is May (2.36").
The driest months (with the least rainfall) are January and February (0.87").
Average rainfall days in September
Fort Griffin, 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 January (4.6 days).
Average snowfall in September
Fort Griffin, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Fort Griffin, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Fort Griffin, 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 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 18min).
Average sunshine days in September
Fort Griffin, TX
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (25 days).
The month with the least sunshine days is September (15.5 days).
Average UV index in September
Fort Griffin, 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
Fort Griffin, TX
- Average cloud cover in September: 26
The month with the most cloud cover is March (Cloud cover 29).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Fort Griffin, 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).
Fort Griffin, Texas, USA
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