Cass
West Virginia, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Cass, West VA

September, the first month of the autumn, in Cass, is also an agreeable month, with average temperature fluctuating between 48.2°F (9°C) and 71.6°F (22°C).

Temperature

In Cass, the average high-temperature marginally drops, from a warm 77°F (25°C) in August, to an agreeable 71.6°F (22°C). The average low-temperature, in September, is 48.2°F (9°C).

Rainfall

In Cass, it is raining for 11 days, with typically 4.4" (111mm) of accumulated precipitation. In Cass, during the entire year, the rain falls for 169 days and collects up to 56.7" (1441mm) of precipitation.

Daylight

The average length of the day is 12.4h.

Sunshine

In Cass, the average sunshine is 6h.

UV index

In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for the average person.
The daily maximum UV index of 7 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 Cass?

In Cass, West Virginia, in September, the average high-temperature is 71.6°F (22°C), and the average low-temperature is 48.2°F (9°C).

How many days does it rain in September in Cass?

In Cass, West Virginia, in September, during 11 rainfall days, 4.4" (111mm) of precipitation is typically accumulated.

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

In Cass, West Virginia, the average length of the day in September is 12.4h.

How long on average sun shines in September in Cass?

In September, the average sunshine in Cass, West Virginia, is 6h.

How high is the UV index in September in Cass?

In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Cass, West VA
  • Average high temperature in September: 72°F

Warmest months (with the highest average high temperature) are July and August (77°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in September: 48°F

Months with the highest average low temperature are July and August (55°F).
The coldest month (with the lowest average low temperature) is January (16°F).

Average rainfall in September - Cass, West VA
  • Average rainfall in September: 4.4"

The wettest month (with the highest rainfall) is July (5.6").
The driest month (with the lowest rainfall) is October (4.2").

Average rainfall days in September - Cass, West VA
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is January (17 days).
Months with the lowest number of rainy days are September and October (11 days).

Average daylight in September / Average sunshine in September - Cass, West VA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 6h

Months with most sunshine are May, June, July and August (Average sunshine: 7h).
The month with least sunshine is December (Average sunshine: 3h).

Average UV index in September - Cass, West VA
  • Average UV index in September: 7

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