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
Hennepin in September undergoes a slight reduction in the average high-temperature, shifting from August's hot 93.7°F (34.3°C) to a warm 84.9°F (29.4°C). September nights experience a consistent temperature drop to an enjoyable 66°F (18.9°C).Heat index
Throughout September, the heat index is calculated to be a tropical 91.4°F (33°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.It is crucial to understand that heat index figures are for shade and gentle wind conditions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
In Hennepin, the average relative humidity in September is 67%.Rainfall
In Hennepin, in September, during 13.1 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Hennepin, during the entire year, the rain falls for 128.4 days and collects up to 27.09" (688mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September in Hennepin, Oklahoma, sunrise is at 7:03 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:14 pm CDT.
Sunshine
In September, the average sunshine in Hennepin, Oklahoma, is 8.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
How hot does it get in Hennepin in September?
What is the average humidity in September in Hennepin?
How much does it rain in Hennepin in September?
When it does not snow in Hennepin?
How many hours of daylight does Hennepin have in September?
When are sunrise and sunset in September in Hennepin?
How long on average sun shines in September in Hennepin?
What is the UV index intensity in September in Hennepin?
Average temperature in September
Hennepin, OK
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is August (93.7°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).
Average pressure in September
Hennepin, OK
- Average pressure in September: 29.97"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
Hennepin, OK
- Average wind speed in September: 7.8mph
The windiest months (with the highest average wind speed) are March and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in September
Hennepin, OK
- Average humidity in September: 67%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Hennepin, OK
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in September
Hennepin, OK
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Hennepin, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Hennepin, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Hennepin, 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 2min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Hennepin, OK
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is May (14.2 days).
Average UV index in September
Hennepin, 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
Hennepin, OK
- Average cloud cover in September: 29
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
Hennepin, 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).
Hennepin, Oklahoma, USA
Weather forecast for your location
2. Allow the app to use your location
