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
With the arrival of September, Sherman experiences a modest decline in average high-temperatures, transitioning from 94.1°F (34.5°C) in August to a still tropical 86°F (30°C). Sherman records an average nighttime low of 67.5°F (19.7°C) in September.Heat index
September's average heat index is calculated to be a hot 93.2°F (34°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
The average relative humidity in September is 66%.Rainfall
In Sherman, in September, it is raining for 13.5 days, with typically 3.19" (81mm) of accumulated precipitation. In Sherman, Texas, during the entire year, the rain falls for 140.2 days and collects up to 31.77" (807mm) of precipitation.Snowfall
In Sherman, snow does not fall in April through October.Daylight
The average length of the day in September in Sherman is 12h and 22min.On the first day of September, sunrise is at 7:00 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:11 pm CDT.
Sunshine
The average sunshine in September is 8.6h.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 exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 6 in September leads to these guidelines:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. 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. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
Is it hot in Sherman during September?
What is the average humidity in September in Sherman?
How much does it rain in Sherman in September?
When it does not snow in Sherman?
What is the average length of the day in September in Sherman?
When are sunrise and sunset in September in Sherman?
How many hours of sunshine does Sherman have in September?
What is the UV index intensity in September in Sherman?
Average temperature in September
Sherman, TX
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (52.2°F).
- Average low temperature in September: 67.5°F
The month with the highest average low temperature is July (74.1°F).
The coldest month (with the lowest average low temperature) is January (36.3°F).
Average pressure in September
Sherman, 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 (29.9"Hg).
Average wind speed in September
Sherman, TX
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is September (6.9mph).
Average humidity in September
Sherman, TX
- Average humidity in September: 66%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Sherman, TX
- Average rainfall in September: 3.19"
The wettest month (with the highest rainfall) is October (4.09").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in September
Sherman, TX
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Sherman, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Sherman, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Sherman, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Sherman, TX
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is January (21.7 days).
The month with the least sunshine days is April (13.9 days).
Average UV index in September
Sherman, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Sherman, TX
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Sherman, 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).
Sherman, Texas, USA
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