Cottage Grove
Oregon, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Cottage Grove, OR

A view of the white Contennial Coverd Bridge, with the scenic Cottage Grove in Oregon, with a view of the surrounding greenery
A view of the white Contennial Coverd Bridge, with the scenic Cottage Grove in Oregon, with a view of the surrounding greenery
The first month of the autumn, September, is also a moderately hot month in Cottage Grove, Oregon, with average temperature varying between 45°F (7.2°C) and 76.1°F (24.5°C).

Temperature

In Cottage Grove, Oregon, the average high-temperature slightly decreases, from 81.9°F (27.7°C) in August, to a still warm 76.1°F (24.5°C). In Cottage Grove, the average low-temperature is 45°F (7.2°C).

Rainfall

In Cottage Grove, Oregon, in September, during 6 rainfall days, 1.5" (38.4mm) of precipitation is typically accumulated. Throughout the year, in Cottage Grove, there are 147 rainfall days, and 45.4" (1153.9mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Cottage Grove, Oregon.

Daylight

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

What is the temperature in September in Cottage Grove?

In September, in Cottage Grove, Oregon, the average high-temperature is 76.1°F (24.5°C), and the average low-temperature is 45°F (7.2°C).

How many days does it rain in September in Cottage Grove?

In Cottage Grove, Oregon, in September, it is raining for 6 days, with typically 1.5" (38.4mm) of accumulated precipitation.

When it does not snow in Cottage Grove?

May through October are months without snowfall in Cottage Grove, Oregon.

What is the average length of the day in September in Cottage Grove?

In Cottage Grove, Oregon, the average length of the day in September is 12.5h.
Average temperature in September - Cottage Grove, OR
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is August (81.9°F).
The month with the lowest average high temperature is January (47.3°F).

  • Average low temperature in September: 45°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is January (33°F).

Average rainfall in September - Cottage Grove, OR
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is December (7.4").
The driest month (with the lowest rainfall) is July (0.4").

Average rainfall days in September - Cottage Grove, OR
  • Average rainfall days in September: 6 days

Months with the highest number of rainy days are January and December (19 days).
The month with the lowest number of rainy days is July (2 days).

Average snowfall in September - Cottage Grove, OR
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.9").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average daylight in September - Cottage Grove, 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).