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
Blackwell's September weather shows a modest shift in high-temperatures, falling from August's hot 91.6°F (33.1°C) to a warm 83.5°F (28.6°C). In September, Blackwell records an average nighttime temperature of 64.4°F (18°C).Heat index
The heat index for September is calculated to be a tropical 87.8°F (31°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Take note of the fact that heat index values are based on shaded circumstances with light airflows. 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 'felt air temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
In September, the average relative humidity in Blackwell is 65%.Rainfall
In Blackwell, Oklahoma, during September, the rain falls for 11.8 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Blackwell, Oklahoma, during the entire year, the rain falls for 116.1 days and collects up to 21.57" (548mm) of precipitation.Snowfall
April through September are months without snowfall.Daylight
In September, the average length of the day in Blackwell is 12h and 24min.On the first day of the month, sunrise is at 7:00 am and sunset at 7:57 pm. On the last day of September, in Blackwell, sunrise is at 7:24 am and sunset at 7:13 pm CDT.
Sunshine
In Blackwell, Oklahoma, the average sunshine in September is 8.7h.UV index
In Blackwell, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 in September translates into these instructions:
Guard yourself - Avoiding sunburn is suggested. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
How hot is September in Blackwell?
What is the average humidity in September in Blackwell?
How much does it rain in Blackwell in September?
When it does not snow in Blackwell?
Does it snow in Blackwell in September?
How many hours of daylight does Blackwell have in September?
What time are sunrise and sunset in September in Blackwell?
How long on average sun shines in September in Blackwell?
What is the UV index intensity in September in Blackwell?
Average temperature in September
Blackwell, OK
- Average high temperature in September: 83.5°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Blackwell, 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 (29.87"Hg).
Average wind speed in September
Blackwell, OK
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in September
Blackwell, OK
- Average humidity in September: 65%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is July (61%).
Average rainfall in September
Blackwell, OK
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in September
Blackwell, OK
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Blackwell, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Blackwell, 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
Blackwell, 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 18min).
The months with the least sunshine are January and December (Average sunshine: 6h and 12min).
Average sunshine days in September
Blackwell, OK
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (13.7 days).
Average UV index in September
Blackwell, 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
Blackwell, OK
- Average cloud cover in September: 25
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Blackwell, 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).
Blackwell, Oklahoma, USA
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