September weather forecast
Coil, OK

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Weather in September

The first month of the autumn, September, is still a warm month in Coil, Oklahoma, with an average temperature fluctuating between 64.9°F (18.3°C) and 84.4°F (29.1°C).

Temperature

A mild drop in Coil's average high-temperature is observed in September, transitioning from a tropical 92.8°F (33.8°C) in August to a warm 84.4°F (29.1°C). Coil, during the month of September, experiences an average low-temperature of 64.9°F (18.3°C).

Heat index

The heat index value during September is appraised at a tropical 91.4°F (33°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. 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

The average relative humidity in September is 68%.

Rainfall

In Coil, in September, it is raining for 14 days, with typically 2.87" (73mm) of accumulated precipitation. In Coil, during the entire year, the rain falls for 135.4 days and collects up to 28.9" (734mm) of precipitation.

Snowfall

In Coil, Oklahoma, snow does not fall in May through October.

Daylight

In Coil, the average length of the day in September is 12h and 23min.
On the first day of September, sunrise is at 6:59 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:11 pm CDT.

Sunshine

In Coil, the average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 5 during September leads to these advisories:
Adopt protective measures - Suggestions to resist sunburn are offered. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Jul 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

In September, in Coil, the average high-temperature is 84.4°F (29.1°C), and the average low-temperature is 64.9°F (18.3°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 91.4°F (33°C).

What is the average humidity in September?

The average relative humidity in September is 68%.

How much does it rain in September?

In September, the rain falls for 14 days. Throughout September, 2.87" (73mm) of precipitation is accumulated.

When it does not snow?

In Coil, snow does not fall in May through October.

How many hours of daylight does Coil have in September?

The average day length in September is 12h and 23min.

When is the sunrise / sunset in September in Coil?

On the first day of September, sunrise is at 6:59 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:11 pm CDT.

How long on average sun shines in September?

In Coil, the average sunshine duration in September is 8.5h.

What is the UV index reading in September?

In Coil, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Coil, OK

Average temperature in September - Coil, OK
  • Average high temperature in September: 84.4°F

The warmest month (with the highest average high temperature) is August (92.8°F).
The month with the lowest average high temperature is January (49.3°F).

  • Average low temperature in September: 64.9°F

The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in September
Coil, OK

Average pressure in September - Coil, 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 (29.89"Hg).

Average wind speed in September
Coil, OK

Average wind speed in September - Coil, OK
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is March (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).

Average humidity in September
Coil, OK

Average humidity in September - Coil, OK
  • Average humidity in September: 68%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (63%).

Average rainfall in September
Coil, OK

Average rainfall in September - Coil, OK
  • Average rainfall in September: 2.87"

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is January (1.46").

Average rainfall days in September
Coil, OK

Average rainfall days in September - Coil, OK
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.7 days).

Average snowfall in September
Coil, OK

Average snowfall in September - Coil, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Coil, OK

Average snowfall days in September - Coil, 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
Coil, OK

Average daylight in September / Average sunshine in September - Coil, 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 August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

Average sunshine days in September
Coil, OK

Average sunshine days in September - Coil, OK
  • Average sunshine days in September: 13.6 days

The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is May (13.2 days).

Average UV index in September
Coil, OK

Average UV index in September - Coil, 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
Coil, OK

Average cloud cover in September - Coil, OK
  • Average cloud cover in September: 28

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in September
Coil, OK

Average visibility in September - Coil, 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).

Coil, Oklahoma, USA

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