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

September weather forecast and climate
Sulphur, OK

September, the first month of the autumn, in Sulphur, is also a moderately hot month, with average temperature fluctuating between 62.6°F (17°C) and 84.2°F (29°C).

Temperature

In September, the average high-temperature decreases, from a hot 93.2°F (34°C) in August, to a warm 84.2°F (29°C). In Sulphur, in September, the average low-temperature is 62.6°F (17°C).

Rainfall

In Sulphur, during September, the rain falls for 8 days and regularly aggregates up to 4.4" (112mm) of precipitation. In Sulphur, during the entire year, the rain falls for 85 days and collects up to 39" (990mm) of precipitation.

Daylight

In Sulphur, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine is 8h.

UV index

In Sulphur, the average daily maximum UV index in September is 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from unsafe exposure to the UV radiation for average individuals.
The daily maximum UV index of 8 interpret into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Sulphur?

In Sulphur, Oklahoma, in September, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 62.6°F (17°C).

How many days does it rain in September in Sulphur?

In Sulphur, during September, the rain falls for 8 days and regularly aggregates up to 4.4" (112mm) of precipitation.

What is the average length of the day in September in Sulphur?

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

How long on average sun shines in September in Sulphur?

In Sulphur, the average sunshine in September is 8h.

What is the UV index intensity in September in Sulphur?

In Sulphur, the average daily maximum UV index in September is 8. A UV Index value of 8 to 10 symbolizes a very high hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Sulphur, OK
  • Average high temperature in September: 84°F

Warmest months (with the highest average high temperature) are July and August (93°F).
The month with the lowest average high temperature is January (50°F).

  • Average low temperature in September: 63°F

Months with the highest average low temperature are July and August (70°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average rainfall in September - Sulphur, OK
  • Average rainfall in September: 4.4"

The wettest month (with the highest rainfall) is May (5.8").
The driest month (with the lowest rainfall) is January (1.6").

Average rainfall days in September - Sulphur, OK
  • Average rainfall days in September: 8 days

The month with the highest number of rainy days is May (10 days).
Months with the lowest number of rainy days are January, February, July, August, November and December (6 days).

Average daylight in September / Average sunshine in September - Sulphur, OK
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 8h

The month with most sunshine is July (Average sunshine: 11h).
Months with least sunshine are January, November and December (Average sunshine: 6).

Average UV index in September - Sulphur, OK
  • Average UV index in September: 8

Months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 2).