September weather forecastCountyline, OK
September
Weather in September
The first month of the autumn, September, is still a warm month in Countyline, Oklahoma, with an average temperature fluctuating between 85.3°F (29.6°C) and 66.2°F (19°C).Temperature
Welcoming September, Countyline observes a shift in the average high-temperature, falling from August's hot 94.6°F (34.8°C) to a warm 85.3°F (29.6°C). Countyline, in the month of September, anticipates a consistent average low-temperature of 66.2°F (19°C).Heat index
September's heat index is calculated to be a tropical 91.4°F (33°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.The heat index's values are generally associated with conditions in shade and light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Humidity
In Countyline, the average relative humidity in September is 64%.Rainfall
In Countyline, in September, it is raining for 13 days, with typically 2.8" (71mm) of accumulated precipitation. In Countyline, during the entire year, the rain falls for 124.2 days and collects up to 25.43" (646mm) of precipitation.Snowfall
In Countyline, snow does not fall in May through October.Daylight
In Countyline, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:04 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:15 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Countyline, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Countyline, OK
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is August (94.6°F).
The month with the lowest average high temperature is January (50.7°F).
- Average low temperature in September: 66.2°F
The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Countyline, OK
- 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 (29.88"Hg).
Average wind speed in September
Countyline, OK
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).
Average humidity in September
Countyline, OK
- Average humidity in September: 64%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (56%).
Average rainfall in September
Countyline, OK
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is May (4.29").
The driest months (with the least rainfall) are February and November (1.1").
Average rainfall days in September
Countyline, OK
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in September
Countyline, OK
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Countyline, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Countyline, OK
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Countyline, OK
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in September
Countyline, 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
Countyline, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Countyline, 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).





