September weather forecastArnett, OK
September
Weather in September
The first month of the autumn, September, is still a warm month in Arnett, Oklahoma, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 83.8°F (28.8°C).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a hot 92.3°F (33.5°C) to a moderately hot 83.8°F (28.8°C). The month of September records an average low-temperature of 64.6°F (18.1°C).Heat index
The heat index for September is appraised at a tropical 86°F (30°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.Consider that heat index readings are for situations in the shade and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
In Arnett, the average relative humidity in September is 57%.Rainfall
In Arnett, in September, it is raining for 11.2 days, with typically 1.34" (34mm) of accumulated precipitation. In Arnett, during the entire year, the rain falls for 104.4 days and collects up to 17.28" (439mm) of precipitation.Snowfall
May through September are months without snowfall in Arnett.Daylight
In Arnett, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 7:11 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:23 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 5 during September translates into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arnett, OK
- Average high temperature in September: 83.8°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (47.3°F).
- Average low temperature in September: 64.6°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in September
Arnett, OK
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Arnett, OK
- Average wind speed in September: 11.6mph
The windiest month (with the highest average wind speed) is April (14mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).
Average humidity in September
Arnett, OK
- Average humidity in September: 57%
The month with the highest relative humidity is May (59%).
The month with the lowest relative humidity is July (51%).
Average rainfall in September
Arnett, OK
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
Arnett, OK
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is August (13.7 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in September
Arnett, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Arnett, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Arnett, OK
- Average daylight in September: 12h and 24min
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 48min).
- Average sunshine in September: 9h and 12min
The months with the most sunshine are June and July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Arnett, OK
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is January (25.1 days).
The month with the least sunshine days is August (13.2 days).
Average UV index in September
Arnett, 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
Arnett, OK
- Average cloud cover in September: 21
The month with the most cloud cover is April (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in September
Arnett, 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).
