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
Ralston's progression into September involves a gentle drop in the average high-temperature, from a tropical 91°F (32.8°C) in August to a moderately hot 83.5°F (28.6°C). During the month of September, an average temperature of 64.2°F (17.9°C) is noted during the nights.Heat index
The heat index value for September is computed to be a tropical 89.6°F (32°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
The average relative humidity in September is 68%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 2.87" (73mm) of precipitation is accumulated. Throughout the year, there are 124.7 rainfall days, and 25.63" (651mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 6:58 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:11 pm CDT.
Sunshine
In Ralston, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is 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?
What time are sunrise and sunset in September?
How many hours of sunshine does Ralston have in September?
What is the UV index reading in September?
Average temperature in September
Ralston, OK
- Average high temperature in September: 83.5°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is January (46.4°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in September
Ralston, 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
Ralston, OK
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity in September
Ralston, OK
- Average humidity in September: 68%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are January, August and October (65%).
Average rainfall in September
Ralston, OK
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in September
Ralston, OK
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in September
Ralston, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Ralston, 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, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ralston, 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 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Ralston, OK
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in September
Ralston, 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
Ralston, OK
- Average cloud cover in September: 26
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Ralston, 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).
Ralston, Oklahoma, USA
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