September weather forecastOnion Spring, TX
September
Weather in September
The first month of the autumn, September, is still a tropical month in Onion Spring, Texas, with an average temperature ranging between min 70.2°F (21.2°C) and max 87.1°F (30.6°C).Temperature
The advent of September brings a slight shift in average high-temperature, moving from 93.6°F (34.2°C) in August to a still tropical 87.1°F (30.6°C). Onion Spring records an average low-temperature of 70.2°F (21.2°C) throughout the month of September.Heat index
During September, the heat index is appraised at a hot 87.8°F (31°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humidity
The most humid month is September, with an average relative humidity of 45%.Rainfall
The month with the most rainfall in Onion Spring is September, when the rain falls for 11.9 days and typically aggregates up to 1.18" (30mm) of precipitation.Snowfall
February through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 7:31 am and sunset at 8:14 pm. On the last day of September, sunrise is at 7:46 am and sunset at 7:39 pm CDT.
Sunshine
The average sunshine in September in Onion Spring, Texas, is 9.5h.UV index
In Onion Spring, Texas, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 6 during September leads to these instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Onion Spring, TX
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is June (96.3°F).
The month with the lowest average high temperature is January (61.9°F).
- Average low temperature in September: 70.2°F
The month with the highest average low temperature is July (76.6°F).
The coldest month (with the lowest average low temperature) is January (41.9°F).
Average pressure in September
Onion Spring, TX
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Onion Spring, TX
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is December (5.4mph).
Average humidity in September
Onion Spring, TX
- Average humidity in September: 45%
The month with the highest relative humidity is September (45%).
The month with the lowest relative humidity is April (23%).
Average rainfall in September
Onion Spring, TX
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is September (1.18").
The driest month (with the least rainfall) is February (0.12").
Average rainfall days in September
Onion Spring, TX
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (13 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Onion Spring, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Onion Spring, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Onion Spring, TX
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 8h and 18min).
Average sunshine days in September
Onion Spring, TX
- Average sunshine days in September: 13.2 days
The months with the most sunshine days are January and December (27.3 days).
The month with the least sunshine days is September (13.2 days).
Average UV index in September
Onion Spring, 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
Onion Spring, TX
- Average cloud cover in September: 20
The month with the most cloud cover is September (Cloud cover 20).
The months with the least cloud cover are May and June (Cloud cover 10).
Average visibility in September
Onion Spring, 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).
