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
Keys's progression into September involves a minor drop in the average high-temperature, slightly receding from a tropical 91°F (32.8°C) in August to a moderately hot 84°F (28.9°C). Throughout the nights in September, Keys experiences an average low-temperature of 63.1°F (17.3°C).Heat index
The heat index value during September is estimated at a hot 91.4°F (33°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
In September, the average relative humidity is 71%.Rainfall
In Keys, during September, the rain falls for 9.4 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 96.8 rainfall days, and 10.79" (274mm) of precipitation is accumulated.Snowfall
In Keys, snow does not fall in April through October and December.Daylight
The average length of the day in September is 12h and 23min.On the first day of September in Keys, sunrise is at 6:52 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:04 pm CDT.
Sunshine
In Keys, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
How hot does it get in Keys in September?
What is the average humidity in September in Keys?
How much does it rain in Keys in September?
When it does not snow in Keys?
What is the average length of the day in September in Keys?
When are sunrise and sunset in September in Keys?
How long on average sun shines in September in Keys?
What is the UV index intensity in September in Keys?
Average temperature in September
Keys, OK
- Average high temperature in September: 84°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (46.8°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Keys, 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 (29.92"Hg).
Average wind speed in September
Keys, OK
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are March and April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in September
Keys, OK
- Average humidity in September: 71%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Keys, OK
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is May (1.42").
The driest months (with the least rainfall) are February, November and December (0.51").
Average rainfall days in September
Keys, OK
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (12 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in September
Keys, OK
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Keys, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.9 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
Keys, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Keys, OK
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is May (15.6 days).
Average UV index in September
Keys, 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
Keys, OK
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Keys, 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).
Keys, Oklahoma, USA
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