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 transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a tropical 94.6°F (34.8°C) in August to a still hot 88.7°F (31.5°C). Throughout September, Hempstead encounters an average temperature drop to a pleasant 70.7°F (21.5°C).Heat index
September's mean heat index is calculated to be a scorching 105.8°F (41°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
The average relative humidity in September in Hempstead is 75%.Rainfall
In September, the rain falls for 16.6 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. In Hempstead, during the entire year, the rain falls for 133.7 days and collects up to 14.69" (373mm) of precipitation.Snowfall
February through November are months without snowfall in Hempstead.Daylight
In September, the average length of the day in Hempstead is 12h and 20min.On the first day of September in Hempstead, sunrise is at 7:01 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:10 pm CDT.
Sunshine
In Hempstead, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 6 in September leads to these recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
Is it hot in Hempstead during September?
What is the average humidity in September in Hempstead?
How many days does it rain in September in Hempstead?
When it does not snow in Hempstead?
What is the average length of the day in September in Hempstead?
When is the sunrise / sunset in September in Hempstead?
How many hours of sunshine does Hempstead have in September?
How high is the UV index in September in Hempstead?
Average temperature in September
Hempstead, TX
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (59.7°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).
Average pressure in September
Hempstead, TX
- Average pressure in September: 29.96"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
Hempstead, TX
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is September (5.5mph).
Average humidity in September
Hempstead, TX
- Average humidity in September: 75%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Hempstead, TX
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is April (0.75").
Average rainfall days in September
Hempstead, TX
- Average rainfall days in September: 16.6 days
The month with the highest number of rainy days is September (16.6 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Hempstead, TX
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Hempstead, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 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
Hempstead, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Hempstead, TX
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is September (11.7 days).
Average UV index in September
Hempstead, 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 3).
Average cloud cover in September
Hempstead, 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 31).
Average visibility in September
Hempstead, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, August, September, October, November and December (6mi).
The months with the lowest visibility are March, April, May, June and July (5mi).
Hempstead, Texas, USA
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