September weather forecastSpearman, TX
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Spearman, Texas, with an average temperature fluctuating between 64°F (17.8°C) and 84.4°F (29.1°C).Temperature
September brings a slight decrease in the average high-temperature, shifting from a hot 91.9°F (33.3°C) in August to a moderately hot 84.4°F (29.1°C). Spearman reports an average nighttime low-temperature of 64°F (17.8°C) in September.Heat index
September's average heat index is calculated to be a tropical 86°F (30°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.Heat index values are typically calculated for conditions of shade and a light breeze. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
In Spearman, the average relative humidity in September is 51%.Rainfall
In September, the rain falls for 7.7 days. Throughout September, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 72.8 rainfall days, and 8.31" (211mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Spearman, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:16 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:39 am and sunset at 7:29 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 5 in September translates into this advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Spearman, TX
- Average high temperature in September: 84.4°F
The warmest month (with the highest average high temperature) is July (94.1°F).
The month with the lowest average high temperature is December (48.6°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (72.9°F).
The coldest months (with the lowest average low temperature) are January and December (29.8°F).
Average pressure in September
Spearman, TX
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Spearman, TX
- Average wind speed in September: 12.1mph
The windiest month (with the highest average wind speed) is April (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.7mph).
Average humidity in September
Spearman, TX
- Average humidity in September: 51%
The month with the highest relative humidity is December (56%).
The month with the lowest relative humidity is April (45%).
Average rainfall in September
Spearman, TX
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is November (0.2").
Average rainfall days in September
Spearman, TX
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and December (2.5 days).
Average snowfall in September
Spearman, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Spearman, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Spearman, TX
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- 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: 6h and 48min).
Average sunshine days in September
Spearman, TX
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is January (27.3 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in September
Spearman, TX
- Average UV index in September: 5
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
Spearman, TX
- Average cloud cover in September: 18
The months with the most cloud cover are February and April (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 14).
Average visibility in September
Spearman, 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).
