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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from 93.7°F (34.3°C) to a still tropical 87.3°F (30.7°C). Valliant's temperature in September declines substantially from daytime highs, settling at a consistent average of 65.7°F (18.7°C) during the nights.Heat index
During September, the heat index is appraised at a sweltering 96.8°F (36°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.Be informed that the heat index values are oriented around shady conditions and gentle breezes. 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 'feels like' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.
Humidity
The average relative humidity in September in Valliant, Oklahoma, is 68%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.1 days and typically collects 2.32" (59mm) of precipitation.Snowfall
In Valliant, snow does not fall in April through November.Daylight
In Valliant, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:54 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:05 pm CDT.
Sunshine
In Valliant, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September in Valliant is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
How hot does it get in Valliant in September?
What is the average humidity in September in Valliant?
What is the driest month in Valliant?
How much does it rain in Valliant in September?
When it does not snow in Valliant?
What is the average length of the day in September in Valliant?
When is the sunrise / sunset in September in Valliant?
How many hours of sunshine does Valliant have in September?
How high is the UV index in September in Valliant?
Average temperature in September
Valliant, OK
- Average high temperature in September: 87.3°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 (51.3°F).
- Average low temperature in September: 65.7°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 (35.2°F).
Average pressure in September
Valliant, OK
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Valliant, OK
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Valliant, OK
- Average humidity in September: 68%
The months with the highest relative humidity are February, March and May (78%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Valliant, OK
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is May (5.24").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in September
Valliant, OK
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is March (15 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Valliant, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Valliant, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 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
Valliant, 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: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Valliant, OK
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is January (18.9 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in September
Valliant, OK
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Valliant, OK
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Valliant, 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).
Valliant, Oklahoma, USA
Weather forecast for your location
2. Allow the app to use your location
