September weather forecast
Countyline, OK

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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.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The high-temperature during September is 85.3°F (29.6°C) and the low-temperature is 66.2°F (19°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 91.4°F (33°C).

What is the average humidity in September?

In September, the average relative humidity is 64%.

How many days does it rain in September?

In Countyline, in September, it is raining for 13 days, with typically 2.8" (71mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in September?

In Countyline, the average day length in September is 12h and 23min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 7:04 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:15 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September in Countyline is 8.5h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Countyline, OK

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / Average sunshine in September - Countyline, OK
  • 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: 9h and 54min).

  • Average sunshine in September: 8h and 3min

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 - 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 - 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 - 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 - 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).

Countyline, Oklahoma, USA

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