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

September weather forecast and climate
Douglas, OK

September, the first month of the autumn, in Douglas, is still a tropical month, with temperature in the range of an average low of 61°F (16.1°C) and an average high of 87.1°F (30.6°C).

Temperature

In September, the average high-temperature marginally drops, from a sweltering 95°F (35°C) in August, to a hot 87.1°F (30.6°C). The average low-temperature, in Douglas, is 61°F (16.1°C).

Humidity

The least humid month is September, with an average relative humidity of 58%.

Rainfall

In Douglas, during September, the rain falls for 5.1 days and regularly aggregates up to 3.1" (78.7mm) of precipitation. In Douglas, during the entire year, the rain falls for 57 days and collects up to 29.8" (756.8mm) of precipitation.

Snowfall

In Douglas, Oklahoma, during the entire year, snow aggregates up to 10.4" (264.1mm).

Daylight

The average length of the day in September is 12.4h.

What is the temperature in September in Douglas?

In Douglas, Oklahoma, in September, the average high-temperature is 87.1°F (30.6°C), and the average low-temperature is 61°F (16.1°C).

What is the least humid month in Douglas?

The least humid month is September, with an average relative humidity of 58%.

What is the average humidity in September in Douglas?

In Douglas, Oklahoma, the average relative humidity in September is 58%.

How many days does it rain in September in Douglas?

In Douglas, during September, the rain falls for 5.1 days and regularly aggregates up to 3.1" (78.7mm) of precipitation.

How many hours of daylight does Douglas have in September?

In Douglas, the average length of the day in September is 12.4h.
Average temperature in September - Douglas, OK
  • Average high temperature in September: 87°F

Warmest months (with the highest average high temperature) are July and August (95°F).
The month with the lowest average high temperature is January (48°F).

  • Average low temperature in September: 61°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average humidity in September - Douglas, OK
  • Average humidity in September: 58%

Months with the highest relative humidity are January and February (69%).
The month with the lowest relative humidity is September (58%).

Average rainfall in September - Douglas, OK
  • Average rainfall in September: 3.1"

The wettest month (with the highest rainfall) is May (4.3").
The driest month (with the lowest rainfall) is January (1.1").

Average rainfall days in September - Douglas, OK
  • Average rainfall days in September: 5.1 days

The month with the highest number of rainy days is May (6.9 days).
The month with the lowest number of rainy days is January (2.9 days).

Average snowfall in September - Douglas, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.7").
Months with the lowest snowfall are June, July, August, September, October, November and December (0").

Average daylight in September - Douglas, 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).