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 onset of September results in a small decrease in the average high-temperature, moderately receding from a very hot 95.7°F (35.4°C) in August to a tropical 87.8°F (31°C). Throughout September, Grandview's nights cool down to an average of 70.2°F (21.2°C).Heat index
September's average heat index is appraised at a torrid 96.8°F (36°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for 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.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
In September, the average relative humidity in Grandview is 65%.Rainfall
In Grandview, in September, it is raining for 15.2 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, there are 141.2 rainfall days, and 31.42" (798mm) of precipitation is accumulated.Snowfall
January, April through November are months without snowfall in Grandview.Daylight
In Grandview, the average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 7:04 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:14 pm CDT.
Sunshine
In Grandview, the average sunshine in September is 8.4h.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 unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 6 in September translates into this advice:
Guard against overexposure. Protection from sun-induced harm is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
How hot does it get in Grandview in September?
What is the average humidity in September in Grandview?
How much does it rain in Grandview in September?
When it does not snow in Grandview?
What is the average length of the day in September in Grandview?
When are sunrise and sunset in September in Grandview?
How long on average sun shines in September in Grandview?
What is the UV index reading in September in Grandview?
Average temperature in September
Grandview, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (55.8°F).
- Average low temperature in September: 70.2°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in September
Grandview, 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
Grandview, TX
- Average wind speed in September: 6.8mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Grandview, TX
- Average humidity in September: 65%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Grandview, TX
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is October (4.37").
The driest month (with the least rainfall) is November (1.65").
Average rainfall days in September
Grandview, TX
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is September (15.2 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in September
Grandview, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Grandview, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 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
Grandview, 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 2min
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 30min).
Average sunshine days in September
Grandview, TX
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is September (13.5 days).
Average UV index in September
Grandview, 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
Grandview, TX
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Grandview, 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).
Grandview, Texas, USA
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