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
The onset of September results in a small decrease in the average high-temperature, moderately receding from a tropical 88.2°F (31.2°C) in August to a warm 81.3°F (27.4°C). In Commerce, the nighttime temperature averages to a refreshing 61.9°F (16.6°C) during September.Heat index
For most parts of September, the heat index is computed to be a tropical 86°F (30°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In Commerce, the average relative humidity in September is 73%.Rainfall
In Commerce, in September, during 12.6 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. Throughout the year, in Commerce, there are 141.2 rainfall days, and 31.14" (791mm) of precipitation is accumulated.Snowfall
April, June through October are months without snowfall in Commerce.Daylight
The average length of the day in September in Commerce is 12h and 24min.On the first day of September in Commerce, sunrise is at 6:51 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:03 pm CDT.
Sunshine
In September, the average sunshine is 9.2h.UV index
In Commerce, 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: The maximum UV index of 5 during September leads to these instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What is the temperature in September in Commerce?
What is the average humidity in September in Commerce?
How many days does it rain in September in Commerce?
When it does not snow in Commerce?
What is the average length of the day in September in Commerce?
What time are sunrise and sunset in September in Commerce?
How long on average sun shines in September in Commerce?
How high is the UV index in September in Commerce?
Average temperature in September
Commerce, OK
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (43.9°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in September
Commerce, OK
- Average pressure in September: 30.01"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
Commerce, OK
- Average wind speed in September: 7.6mph
The windiest months (with the highest average wind speed) are March and April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Commerce, OK
- Average humidity in September: 73%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Commerce, OK
- Average rainfall in September: 2.99"
The wettest month (with the highest rainfall) is May (5.24").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in September
Commerce, OK
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in September
Commerce, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in September
Commerce, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Commerce, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in September
Commerce, OK
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is December (21.4 days).
The months with the least sunshine days are April and May (13.6 days).
Average UV index in September
Commerce, OK
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Commerce, OK
- Average cloud cover in September: 28
The months with the most cloud cover are February and March (Cloud cover 43).
The months with the least cloud cover are June, July and August (Cloud cover 24).
Average visibility in September
Commerce, 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).
Commerce, Oklahoma, USA
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