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
The move into September indicates a slight reduction in the average high-temperature, down from August's very hot 95.5°F (35.3°C) to a hot 89.6°F (32°C). Grapeland, in September, experiences an average temperature of 68.7°F (20.4°C) at night.Heat index
The average heat index in September is calculated to be an extremely hot 105.8°F (41°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.It is crucial to understand that heat index figures are for shade and gentle wind conditions. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
The average relative humidity in September is 71%.Rainfall
In Grapeland, during September, the rain falls for 14.6 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, there are 157.9 rainfall days, and 36.06" (916mm) of precipitation is accumulated.Snowfall
In Grapeland, snow does not fall in March through December.Daylight
The average length of the day in September is 12h and 21min.On the first day of September in Grapeland, sunrise is at 6:58 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:07 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Grapeland, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes 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:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Grapeland?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Grapeland have in September?
What is the UV index reading in September?
Average temperature in September
Grapeland, TX
- Average high temperature in September: 89.6°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (56.3°F).
- Average low temperature in September: 68.7°F
The month with the highest average low temperature is August (73.6°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).
Average pressure in September
Grapeland, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Grapeland, TX
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in September
Grapeland, TX
- Average humidity in September: 71%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Grapeland, TX
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is October (4.29").
The driest month (with the least rainfall) is November (2.05").
Average rainfall days in September
Grapeland, TX
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is March (14.8 days).
The month with the least rainy days is January (11 days).
Average snowfall in September
Grapeland, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Grapeland, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Grapeland, 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: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Grapeland, TX
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is February (12.4 days).
Average UV index in September
Grapeland, 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
Grapeland, TX
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Grapeland, TX
- Average visibility in September: 5mi
The months with the highest visibility are January, August, October, November and December (6mi).
The months with the lowest visibility are February, March, April, May, June, July and September (5mi).
Grapeland, Texas, USA
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