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
The arrival of September correlates with a minor temperature reduction, down from August's 93.2°F (34°C) to a still hot 86.9°F (30.5°C). Ultima Thule experiences a mean low-temperature of 65.5°F (18.6°C) during September.Heat index
The heat index value during September is computed to be a torrid 96.8°F (36°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In Ultima Thule, Oklahoma, the average relative humidity in September is 69%.Rainfall
September is the month with the least rainfall. Rain falls for 11.1 days and accumulates 1.34" (34mm) of precipitation.Snowfall
In Ultima Thule, snow does not fall in April through November.Daylight
In Ultima Thule, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:52 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:03 pm CDT.
Sunshine
In Ultima Thule, the average sunshine in September is 9.4h.UV index
In Ultima Thule, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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?
What is the driest month?
How many days does it rain in September?
When it does not snow in Ultima Thule?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Ultima Thule have in September?
What is the UV index intensity in September?
Average temperature in September
Ultima Thule, OK
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Ultima Thule, 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 (29.93"Hg).
Average wind speed in September
Ultima Thule, OK
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Ultima Thule, OK
- Average humidity in September: 69%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Ultima Thule, OK
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (1.34").
Average rainfall days in September
Ultima Thule, OK
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in September
Ultima Thule, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Ultima Thule, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Ultima Thule, 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 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Ultima Thule, OK
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is January (20.5 days).
The months with the least sunshine days are May and August (14.8 days).
Average UV index in September
Ultima Thule, OK
- Average UV index in September: 6
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
Ultima Thule, OK
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Ultima Thule, OK
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
Ultima Thule, Oklahoma, USA
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