September weather forecastMounds, OK
September
Weather in September
The first month of the autumn, September, is still a warm month in Mounds, Oklahoma, with an average temperature fluctuating between 64°F (17.8°C) and 83.5°F (28.6°C).Temperature
In Mounds, entering September brings a subtle temperature decrement, reducing from August's tropical 90.7°F (32.6°C) to a warm 83.5°F (28.6°C). During the month of September, Mounds's nighttime temperature lowers to an average of 64°F (17.8°C).Heat index
For most parts of September, the heat index is estimated at a hot 89.6°F (32°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
In September, the average relative humidity is 70%.Rainfall
In September, the rain falls for 11.9 days. Throughout September, 3.39" (86mm) of precipitation is accumulated. In Mounds, during the entire year, the rain falls for 129 days and collects up to 29.41" (747mm) of precipitation.Snowfall
In Mounds, snow does not fall in March through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:56 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:08 pm CDT.
Sunshine
In Mounds, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mounds, OK
- Average high temperature in September: 83.5°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (46.6°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Mounds, OK
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Mounds, OK
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is March (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in September
Mounds, OK
- Average humidity in September: 70%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, August and October (67%).
Average rainfall in September
Mounds, OK
- Average rainfall in September: 3.39"
The wettest month (with the highest rainfall) is May (5.08").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in September
Mounds, OK
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Mounds, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Mounds, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.2 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
Mounds, OK
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 36min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Mounds, OK
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is May (14.2 days).
Average UV index in September
Mounds, 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
Mounds, OK
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Mounds, 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).
