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
September brings a slight decrease in temperature, down from a hot 92.1°F (33.4°C) in August to a warm 84.4°F (29.1°C). Nighttime temperatures in September average to an enjoyable 64.9°F (18.3°C).Heat index
The heat index for September is estimated at a tropical 89.6°F (32°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.Understand that the heat index values take into account shaded locations and mild winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
The average relative humidity in September is 67%.Rainfall
In Lake Hiwassee, in September, it is raining for 12.3 days, with typically 2.72" (69mm) of accumulated precipitation. In Lake Hiwassee, during the entire year, the rain falls for 121.6 days and collects up to 25.47" (647mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 7:01 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:13 pm CDT.
Sunshine
In Lake Hiwassee, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Lake Hiwassee is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Undertake protective steps - Recommendations to avoid sunburn are issued. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Lake Hiwassee have 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
Lake Hiwassee, OK
- Average high temperature in September: 84.4°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (48.4°F).
- Average low temperature in September: 64.9°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 (31.5°F).
Average pressure in September
Lake Hiwassee, OK
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Lake Hiwassee, OK
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in September
Lake Hiwassee, OK
- Average humidity in September: 67%
The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Lake Hiwassee, OK
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is May (4.17").
The driest months (with the least rainfall) are January, February and December (1.06").
Average rainfall days in September
Lake Hiwassee, OK
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (5 days).
Average snowfall in September
Lake Hiwassee, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Lake Hiwassee, 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, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lake Hiwassee, 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: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Lake Hiwassee, OK
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is May (13.9 days).
Average UV index in September
Lake Hiwassee, OK
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Lake Hiwassee, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Lake Hiwassee, 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).
Lake Hiwassee, Oklahoma, USA
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