September weather forecastFort Supply, OK
September
Weather in September
September, the first month of the autumn in Fort Supply, is still a warm month, with an average temperature fluctuating between 83.8°F (28.8°C) and 64.9°F (18.3°C).Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to a warm 83.8°F (28.8°C) from a hot 91.9°F (33.3°C). Fort Supply throughout September, records an average low-temperature of 64.9°F (18.3°C).Heat index
The heat index value during September is evaluated at a tropical 86°F (30°C). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.One should consider that heat index numbers are for shaded settings and 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 'feels like', reflects the feeling of heat when considering both air temperature and humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
The average relative humidity in September in Fort Supply is 58%.Rainfall
In Fort Supply, during September, the rain falls for 11.4 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Fort Supply, during the entire year, the rain falls for 96.5 days and collects up to 16.46" (418mm) of precipitation.Snowfall
In Fort Supply, Oklahoma, snow does not fall in May through September.Daylight
In Fort Supply, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:33 am and sunset at 7:22 pm CDT.
Sunshine
In Fort Supply, the average sunshine in September is 9h.UV index
In Fort Supply, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. 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
Fort Supply, OK
- Average high temperature in September: 83.8°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 (46.9°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in September
Fort Supply, OK
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Fort Supply, OK
- Average wind speed in September: 11.5mph
The windiest month (with the highest average wind speed) is April (13.9mph).
The calmest month (with the lowest average wind speed) is August (10.3mph).
Average humidity in September
Fort Supply, OK
- Average humidity in September: 58%
The month with the highest relative humidity is May (60%).
The month with the lowest relative humidity is July (52%).
Average rainfall in September
Fort Supply, OK
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is October (2.2").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in September
Fort Supply, OK
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is August (12.8 days).
The month with the least rainy days is January (3.2 days).
Average snowfall in September
Fort Supply, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Fort Supply, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Fort Supply, OK
- 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 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Fort Supply, OK
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is January (25.8 days).
The month with the least sunshine days is August (15.1 days).
Average UV index in September
Fort Supply, OK
- 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
Fort Supply, OK
- Average cloud cover in September: 23
The month with the most cloud cover is April (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in September
Fort Supply, 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).
