Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a hot 91.8°F (33.2°C) to a warm 84.7°F (29.3°C). Checotah's nights in September experience an average temperature drop to a refreshing 64.4°F (18°C).Heat index
September's mean heat index is appraised at a tropical 91.4°F (33°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
The average relative humidity in September is 70%.Rainfall
In Checotah, in September, during 10.2 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 130.7 rainfall days, and 32.44" (824mm) of precipitation is accumulated.Snowfall
In Checotah, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:06 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September in Checotah is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Around midday, solar radiation is most harmful; hence, exposure should be limited. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Checotah, OK
- Average high temperature in September: 84.7°F
The warmest months (with the highest average high temperature) are July and August (91.8°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (32.4°F).
Average pressure in September
Checotah, OK
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Checotah, OK
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Checotah, OK
- Average humidity in September: 70%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Checotah, OK
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is May (5.12").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in September
Checotah, OK
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
Checotah, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Checotah, 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
Checotah, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Checotah, OK
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is January (21.7 days).
The month with the least sunshine days is April (13 days).
Average UV index in September
Checotah, OK
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Checotah, OK
- Average cloud cover in September: 28
The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Checotah, 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).
Checotah, Oklahoma, USA
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