September weather forecast
Fort Sill, OK

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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.

Temperature

September in Fort Sill involves a decrease in temperature, down from a tropical 94.8°F (34.9°C) in August to a warm 85.8°F (29.9°C). Following the sharp contrast to daytime warmth, an average nighttime temperature of 61.9°F (16.6°C) gets registered during September.

Rainfall

In Fort Sill, in September, 3.7" (94mm) of precipitation is typically accumulated. During the entire year, Fort Sill aggregates up to 29.29" (744mm) of precipitation.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of September in Fort Sill, 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.
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Frequently asked questions

How hot is September in Fort Sill?

September temperatures in Fort Sill, Oklahoma, vary between a high-temperature of 85.8°F (29.9°C) and a low-temperature of 61.9°F (16.6°C).

How much does it rain in Fort Sill in September?

Throughout September, in Fort Sill, Oklahoma, 3.7" (94mm) of precipitation is accumulated.

How many hours of daylight does Fort Sill have in September?

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

When is the sunrise / sunset in September in Fort Sill?

On the first day of September in Fort Sill, 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 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).

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Average rainfall in September
Fort Sill, OK

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").

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Average daylight in September
Fort Sill, OK

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).

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Fort Sill, Oklahoma, USA

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