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
September reveals a small adjustment in temperature, transitioning from an average high of a very hot 95°F (35°C) in August to a hot 88.9°F (31.6°C). Nighttime temperatures in September average to a refreshing 67.6°F (19.8°C).Heat index
September's average heat index is evaluated at a blisteringly hot 104°F (40°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression 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 important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
The average relative humidity in September is 72%.Rainfall
In Garrison, during September, the rain falls for 15 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, in Garrison, Texas, there are 160.4 rainfall days, and 35.83" (910mm) of precipitation is accumulated.Snowfall
January through March, September and December are months with snowfall in Garrison. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Garrison, Texas, during the entire year, snow falls for 2.6 days and aggregates up to 0.79" (20mm) of snow.Daylight
In September, the average length of the day is 12h and 21min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:11 am and sunset at 7:03 pm CDT.
Sunshine
In Garrison, the average sunshine in September is 9.1h.UV index
In Garrison, 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 average individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
Is it hot in Garrison during September?
What is the average humidity in September in Garrison?
How much does it rain in Garrison in September?
When does it start snowing in Garrison?
What is the average length of the day in September in Garrison?
When are sunrise and sunset in September in Garrison?
How long on average sun shines in September in Garrison?
What is the UV index intensity in September in Garrison?
Average temperature in September
Garrison, TX
- Average high temperature in September: 88.9°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (55.8°F).
- Average low temperature in September: 67.6°F
The month with the highest average low temperature is August (73.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).
Average pressure in September
Garrison, 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 (29.93"Hg).
Average wind speed in September
Garrison, TX
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).
Average humidity in September
Garrison, TX
- Average humidity in September: 72%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Garrison, TX
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.44").
Average rainfall days in September
Garrison, TX
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is March (15.5 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in September
Garrison, TX
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are April, May, June, July, August, October and November (0").
Average snowfall days in September
Garrison, TX
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (0.9 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Garrison, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Garrison, TX
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Garrison, 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
Garrison, TX
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Garrison, TX
- Average visibility in September: 5mi
The months with the highest visibility are June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, September and December (5mi).
Garrison, Texas, USA
Weather forecast for your location
2. Allow the app to use your location
