September weather forecast
Lexington, OK

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Weather in September

September, the first month of the autumn in Lexington, is still a warm month, with an average temperature fluctuating between 65.7°F (18.7°C) and 84.7°F (29.3°C).

Temperature

The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a hot 93°F (33.9°C) in August to a moderately hot 84.7°F (29.3°C). The average low-temperature, in September, is a refreshing 65.7°F (18.7°C).

Heat index

The heat index value during September is calculated to be a hot 91.4°F (33°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. 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 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In Lexington, Oklahoma, the average relative humidity in September is 67%.

Rainfall

In Lexington, in September, during 12.9 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, there are 116.5 rainfall days, and 24.21" (615mm) of precipitation is accumulated.

Snowfall

In Lexington, snow does not fall in May through October.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 7:02 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:14 pm CDT.

Sunshine

In Lexington, the average sunshine in September is 8.5h.

UV index

In Lexington, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 5 during September translates into the following directions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September?

In Lexington, in September, the average high-temperature is 84.7°F (29.3°C), and the average low-temperature is 65.7°F (18.7°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in September is calculated to be 91.4°F (33°C).

What is the average humidity in September?

In September, the average relative humidity is 67%.

How much does it rain in Lexington in September?

In Lexington, in September, it is raining for 12.9 days, with typically 2.6" (66mm) of accumulated precipitation.

When it does not snow?

In Lexington, snow does not fall in May through October.

How many hours of daylight does Lexington have in September?

In September, the average day length is 12h and 23min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:14 pm CDT.

How long on average sun shines in September?

In September, the average sunshine duration is 8.5h.

How high is the UV index in September?

In Lexington, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Lexington, OK

Average temperature in September - Lexington, OK
  • Average high temperature in September: 84.7°F

The warmest months (with the highest average high temperature) are July and August (93°F).
The month with the lowest average high temperature is January (49.5°F).

  • Average low temperature in September: 65.7°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 (33.3°F).

Average pressure in September
Lexington, OK

Average pressure in September - Lexington, OK
  • Average pressure in September: 29.97"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
Lexington, OK

Average wind speed in September - Lexington, OK
  • Average wind speed in September: 8.3mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).

Average humidity in September
Lexington, OK

Average humidity in September - Lexington, 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 (60%).

Average rainfall in September
Lexington, OK

Average rainfall in September - Lexington, OK
  • Average rainfall in September: 2.6"

The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is November (0.98").

Average rainfall days in September
Lexington, OK

Average rainfall days in September - Lexington, OK
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (5.2 days).

Average snowfall in September
Lexington, OK

Average snowfall in September - Lexington, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.65").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Lexington, OK

Average snowfall days in September - Lexington, OK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.3 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
Lexington, OK

Average daylight in September / Average sunshine in September - Lexington, 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 3min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in September
Lexington, OK

Average sunshine days in September - Lexington, OK
  • Average sunshine days in September: 15.4 days

The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (14.4 days).

Average UV index in September
Lexington, OK

Average UV index in September - Lexington, 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
Lexington, OK

Average cloud cover in September - Lexington, 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
Lexington, OK

Average visibility in September - Lexington, 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).

Lexington, Oklahoma, USA

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