Oklahoma, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Arnett, OK

September, the first month of the autumn, in Arnett, is still a warm month, with average temperature varying between 57°F (13.9°C) and 82°F (27.8°C).


In Arnett, the average high-temperature marginally drops, from a tropical 90°F (32.2°C) in August, to a moderately hot 82°F (27.8°C). The average low-temperature, in September, is 57°F (13.9°C).


In Arnett, in September, 2.5" (62.7mm) of precipitation is typically accumulated. Throughout the year, in Arnett, 25.4" (644mm) of rain is accumulated.


In Arnett, the average length of the day in September is 12.4h.

What is the temperature in September in Arnett?

In Arnett, Oklahoma, in September, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 57°F (13.9°C).

How much does it rain in Arnett in September?

During September, Arnett regularly aggregates up to 2.5" (62.7mm) of precipitation.

How many hours of daylight does Arnett have in September?

The average length of the day in September in Arnett, Oklahoma, is 12.4h.
Average temperature in September - Arnett, OK
  • Average high temperature in September: 82°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (45°F).

  • Average low temperature in September: 57°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (20°F).

Average rainfall in September - Arnett, OK
  • Average rainfall in September: 2.5"

The wettest month (with the highest rainfall) is May (4.5").
The driest month (with the lowest rainfall) is January (0.6").

Average daylight in September - Arnett, OK
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).