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
September is characterized by a mild reduction in the average high-temperature, from a tropical 90.7°F (32.6°C) in August to a moderately hot 83.3°F (28.5°C). In Blackburn, in September, the average low-temperature is an enjoyable 63.7°F (17.6°C).Heat index
During September, the heat index is calculated to be a hot 89.6°F (32°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
In Blackburn, the average relative humidity in September is 69%.Rainfall
In September, the rain falls for 12.1 days. Throughout September, 3.31" (84mm) of precipitation is accumulated. Throughout the year, there are 128.9 rainfall days, and 27.72" (704mm) of precipitation is accumulated.Snowfall
In Blackburn, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 6:58 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:10 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 5 during September leads to these instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Blackburn during 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?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Blackburn, OK
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in September: 63.7°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).
Average pressure in September
Blackburn, 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 (29.88"Hg).
Average wind speed in September
Blackburn, OK
- Average wind speed in September: 8mph
The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.6mph).
Average humidity in September
Blackburn, OK
- Average humidity in September: 69%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and October (66%).
Average rainfall in September
Blackburn, OK
- Average rainfall in September: 3.31"
The wettest month (with the highest rainfall) is May (4.92").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Blackburn, OK
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Blackburn, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Blackburn, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 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
Blackburn, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Blackburn, OK
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is January (23 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in September
Blackburn, OK
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Blackburn, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Blackburn, 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).
Blackburn, Oklahoma, USA
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