September weather forecastSumpter, OK
September
Weather in September
The first month of the autumn, September, is still a warm month in Sumpter, Oklahoma, with an average temperature ranging between min 64.4°F (18°C) and max 83.5°F (28.6°C).Temperature
Sumpter in September undergoes a slight reduction in the average high-temperature, shifting from August's tropical 91.6°F (33.1°C) to a warm 83.5°F (28.6°C). In Sumpter, an average temperature of 64.4°F (18°C) is noted during September nights.Heat index
The heat index value for September is appraised at a hot 87.8°F (31°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Humidity
In Sumpter, the average relative humidity in September is 65%.Rainfall
In Sumpter, in September, during 11.8 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Sumpter, during the entire year, the rain falls for 116.1 days and collects up to 21.57" (548mm) of precipitation.Snowfall
In Sumpter, snow does not fall in April through September.Daylight
The average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 7:00 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:13 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sumpter, OK
- Average high temperature in September: 83.5°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Sumpter, OK
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Sumpter, OK
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in September
Sumpter, OK
- Average humidity in September: 65%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is July (61%).
Average rainfall in September
Sumpter, OK
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in September
Sumpter, OK
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Sumpter, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Sumpter, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 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
Sumpter, OK
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The months with the least sunshine are January and December (Average sunshine: 6h and 12min).
Average sunshine days in September
Sumpter, OK
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (13.7 days).
Average UV index in September
Sumpter, OK
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Sumpter, OK
- Average cloud cover in September: 25
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Sumpter, OK
- 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).
