September weather forecastHenrietta, TX
September
Weather in September
September, the first month of the autumn in Henrietta, is still a tropical month, with an average temperature varying between 87.3°F (30.7°C) and 68.2°F (20.1°C).Temperature
Henrietta's weather in September involves a decrease in the average high-temperature, moving down from August's sweltering 96.6°F (35.9°C) to a hot 87.3°F (30.7°C). Henrietta records a mean low-temperature of 68.2°F (20.1°C) in September.Heat index
The average heat index in September is appraised at a tropical 93.2°F (34°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The average relative humidity in September is 61%.Rainfall
In September, the rain falls for 11.7 days. Throughout September, 2.01" (51mm) of precipitation is accumulated. In Henrietta, during the entire year, the rain falls for 110.7 days and collects up to 21.22" (539mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:07 am and sunset at 7:57 pm. On the last day of September, sunrise is at 7:27 am and sunset at 7:17 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Henrietta, 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 (53.6°F).
- Average low temperature in September: 68.2°F
The months with the highest average low temperature are July and August (75.4°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
Henrietta, 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 (29.88"Hg).
Average wind speed in September
Henrietta, TX
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is September (7.9mph).
Average humidity in September
Henrietta, TX
- Average humidity in September: 61%
The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Henrietta, TX
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in September
Henrietta, TX
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Henrietta, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Henrietta, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Henrietta, TX
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 30min
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 12min).
Average sunshine days in September
Henrietta, TX
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is May (15.1 days).
Average UV index in September
Henrietta, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Henrietta, TX
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 32).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Henrietta, 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).
