September weather forecastChandler, OK
September
Weather in September
September, the first month of the autumn in Chandler, is also a moderately hot month, with an average temperature varying between 64.4°F (18°C) and 84.2°F (29°C).Temperature
The arrival of September signals a subtle shift in temperature, down from a tropical 91.9°F (33.3°C) in August to a moderately hot 84.2°F (29°C). Throughout September, an average nighttime temperature of 64.4°F (18°C) is experienced.Heat index
September's heat index is evaluated at a tropical 89.6°F (32°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.It is essential to grasp that the heat index's numbers are for shade and light wind settings. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to 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 68%.Rainfall
In Chandler, during September, the rain falls for 9.1 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, there are 87.3 rainfall days, and 8.74" (222mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Chandler, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:00 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:12 pm CDT.
Sunshine
In Chandler, the average sunshine in September is 8.6h.UV index
In Chandler, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chandler, OK
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Chandler, 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
Chandler, OK
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is August (7.9mph).
Average humidity in September
Chandler, OK
- Average humidity in September: 68%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (63%).
Average rainfall in September
Chandler, OK
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is May (1.61").
The driest months (with the least rainfall) are February, November and December (0.28").
Average rainfall days in September
Chandler, OK
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is May (10.7 days).
The month with the least rainy days is December (3.4 days).
Average snowfall in September
Chandler, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Chandler, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Chandler, OK
- Average daylight in September: 12h and 24min
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 36min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in September
Chandler, OK
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is December (26.1 days).
The month with the least sunshine days is May (17.3 days).
Average UV index in September
Chandler, 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
Chandler, 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
Chandler, 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).
