Coos Bay
Oregon, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Coos Bay, OR

A unique sandy and rocky shore near a forest of pine trees in the Shore Acres State Park in Coos Bay, Oregon, light waves in the vast sea
A unique sandy and rocky shore near a forest of pine trees in the Shore Acres State Park in Coos Bay, Oregon, light waves in the vast sea
September, the first month of the autumn, in Coos Bay, is also an agreeable month, with average temperature varying between 50°F (10°C) and 68°F (20°C).

Temperature

August and September, with an average high-temperature of 68°F (20°C), are the warmest months.

Rainfall

During September, Coos Bay regularly aggregates up to 1.7" (43.9mm) of precipitation. During the entire year, Coos Bay aggregates up to 64.4" (1636.5mm) of precipitation.

Snowfall

In Coos Bay, during the entire year, snow aggregates up to 0.8" (20.3mm).

Daylight

In Coos Bay, the average length of the day in September is 12.5h.

What are the warmest months in Coos Bay?

Warmest months in Coos Bay, Oregon, are August and September, with an average high-temperature of 68°F (20°C).

What is the temperature in September in Coos Bay?

In Coos Bay, in September, the average high-temperature is 68°F (20°C), and the average low-temperature is 50°F (10°C).

How much does it rain in Coos Bay in September?

Throughout September, in Coos Bay, 1.7" (43.9mm) of precipitation is accumulated.

How many hours of daylight does Coos Bay have in September?

The average length of the day in September is 12.5h.
Average temperature in September - Coos Bay, OR
  • Average high temperature in September: 68°F

Warmest months (with the highest average high temperature) are August and September (68°F).
Months with the lowest average high temperature are January and December (53°F).

  • Average low temperature in September: 50°F

Months with the highest average low temperature are July and August (53°F).
Coldest months (with the lowest average low temperature) are January and December (39°F).

Average rainfall in September - Coos Bay, OR
  • Average rainfall in September: 1.7"

Wettest months (with the highest rainfall) are November and December (10.4").
The driest month (with the lowest rainfall) is July (0.5").

Average snowfall in September - Coos Bay, OR
  • Average snowfall in September: 0"

Months with the highest snowfall are January, February and December (0.2").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average daylight in September - Coos Bay, OR
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).