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's onset corresponds with a shift in the average high-temperature, moving from a tropical 93.9°F (34.4°C) in August to a moderately hot 84.9°F (29.4°C). Alex's temperature lowers to a mean of 66°F (18.9°C) during the nights in September.Heat index
For September, the heat index is appraised at a tropical 91.4°F (33°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Note that heat index values are valued for light wind and location in the shade. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in September is 65%.Rainfall
In September, the rain falls for 12.1 days. Throughout September, 2.56" (65mm) of precipitation is accumulated. In Alex, during the entire year, the rain falls for 119.9 days and collects up to 24.65" (626mm) of precipitation.Snowfall
In Alex, snow does not fall in May through October.Daylight
In Alex, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:04 am and sunset at 7:57 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:16 pm CDT.
Sunshine
In Alex, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in Alex in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Alex, OK
- Average high temperature in September: 84.9°F
The warmest months (with the highest average high temperature) are July and August (93.9°F).
The month with the lowest average high temperature is January (50.2°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Alex, 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
Alex, OK
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in September
Alex, OK
- Average humidity in September: 65%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Alex, OK
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is May (3.94").
The driest months (with the least rainfall) are February and November (1.06").
Average rainfall days in September
Alex, OK
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in September
Alex, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Alex, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2 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
Alex, 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 54min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Alex, OK
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (14.1 days).
Average UV index in September
Alex, 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
Alex, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Alex, 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).
Alex, Oklahoma, USA
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