Weather in September
September in Fort Sill signifies the arrival of autumn with moderate temperatures. The fact that only 3.7" (94mm) of rain falls and days become slightly shorter are indications of the settling summer period. It is a period of delightful weather with lesser heat intensity and light showers scattered throughout the month.
On the first day of September, sunrise is at 7:07 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:18 pm CDT.
Temperature
As Fort Sill enters September, the average high-temperature decreases from the a hot 94.8°F (34.9°C) of August to a warm 85.8°F (29.9°C). Despite drastic daily temperature oscillations, Fort Sill cools down to an average low-temperature of 61.9°F (16.6°C) in September.Rainfall
Throughout September, 3.7" (94mm) of precipitation is accumulated. Throughout the year, in Fort Sill, 29.29" (744mm) of rain is accumulated.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 7:07 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:18 pm CDT.
Updated: Jul 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
In Fort Sill, 85.8°F (29.9°C) is the average high-temperature and 61.9°F (16.6°C) is the average low-temperature during September.
How much does it rain in September?
During September, Fort Sill regularly aggregates up to 3.7" (94mm) of precipitation.
How many hours of daylight does Fort Sill have in September?
In September, the average day length is 12h and 23min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 7:07 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:18 pm CDT.
Average temperature in September
Fort Sill, OK
- Average high temperature in September: 85.9°F
The warmest month (with the highest average high temperature) is July (95.8°F).
The month with the lowest average high temperature is January (49.9°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (71°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average rainfall in September
Fort Sill, OK
- Average rainfall in September: 3.7"
The wettest month (with the highest rainfall) is May (4.9").
The driest month (with the least rainfall) is January (1.1").
Average daylight in September
Fort Sill, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
Fort Sill, Oklahoma, USA
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