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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a hot 89.8°F (32.1°C) to a moderately hot 83.3°F (28.5°C). In September, Valley Park records an average nighttime temperature of 63.3°F (17.4°C).Heat index
September's heat index is estimated at a tropical 89.6°F (32°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
In Valley Park, the average relative humidity in September is 71%.Rainfall
In Valley Park, in September, it is raining for 11.5 days, with typically 3.43" (87mm) of accumulated precipitation. Throughout the year, there are 133 rainfall days, and 31.1" (790mm) of precipitation is accumulated.Snowfall
In Valley Park, 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 6:55 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:07 pm CDT.
Sunshine
In September, the average sunshine is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Valley Park during September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Valley Park, OK
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in September: 63.3°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
Valley Park, OK
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Valley Park, OK
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is March (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in September
Valley Park, OK
- Average humidity in September: 71%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Valley Park, OK
- Average rainfall in September: 3.43"
The wettest month (with the highest rainfall) is May (5.2").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in September
Valley Park, OK
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Valley Park, 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
Valley Park, 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, September and October (0 days).
Average daylight in September /
Average sunshine in September
Valley Park, 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: 9h and 0min
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
Valley Park, OK
- Average sunshine days in September: 16 days
The month with the most sunshine days is December (21.8 days).
The months with the least sunshine days are April and May (13.3 days).
Average UV index in September
Valley Park, OK
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Valley Park, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Valley Park, 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).
Valley Park, Oklahoma, USA
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