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 signals a slight drop in average high-temperature, sliding from August's hot 94.1°F (34.5°C) to a moderately hot 85.6°F (29.8°C). During September, the average low-temperature is recorded at a comfortable 66.2°F (19°C).Heat index
The heat index in September is estimated at a tropical 93.2°F (34°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity is 67%.Rainfall
In Hopewell, in September, it is raining for 12.9 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, there are 135.8 rainfall days, and 30.24" (768mm) of precipitation is accumulated.Snowfall
In Hopewell, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:59 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:10 pm CDT.
Sunshine
In Hopewell, the average sunshine in September is 8.5h.UV index
In Hopewell, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Hopewell have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Hopewell have in September?
What is the UV index reading in September?
Average temperature in September
Hopewell, OK
- Average high temperature in September: 85.6°F
The warmest month (with the highest average high temperature) is August (94.1°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in September: 66.2°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).
Average pressure in September
Hopewell, 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 (29.89"Hg).
Average wind speed in September
Hopewell, OK
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in September
Hopewell, 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
Hopewell, OK
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in September
Hopewell, OK
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in September
Hopewell, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Hopewell, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Hopewell, 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 3min
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 42min).
Average sunshine days in September
Hopewell, OK
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in September
Hopewell, 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, February and December (UV index 3).
Average cloud cover in September
Hopewell, OK
- Average cloud cover in September: 28
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Hopewell, 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).
Hopewell, Oklahoma, USA
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