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 advent of September brings a slight shift in average high-temperature, moving from a tropical 94.3°F (34.6°C) in August to a moderately hot 85.8°F (29.9°C). Blue reports an average low-temperature of 66.7°F (19.3°C) during the nights of September.Heat index
The heat index for September is estimated at a hot 93.2°F (34°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.One should consider that heat index numbers are for shaded settings and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In Blue, the average relative humidity in September is 67%.Rainfall
In Blue, during September, the rain falls for 12.8 days and regularly aggregates up to 2.99" (76mm) of precipitation. In Blue, during the entire year, the rain falls for 139 days and collects up to 32.32" (821mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:59 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:10 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In Blue, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Blue have in September?
How high is the UV index in September?
Average temperature in September
Blue, OK
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is August (94.3°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in September: 66.7°F
The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in September
Blue, 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 (29.9"Hg).
Average wind speed in September
Blue, OK
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in September
Blue, OK
- Average humidity in September: 67%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Blue, OK
- Average rainfall in September: 2.99"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in September
Blue, OK
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Blue, 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
Blue, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Blue, 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 4min
The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Blue, OK
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is March (14.6 days).
Average UV index in September
Blue, 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
Blue, OK
- Average cloud cover in September: 28
The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Blue, 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).
Blue, Oklahoma, USA
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