Oregon City
Oregon, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Oregon City, OR

The first month of the autumn, September, is still a warm month in Oregon City, Oregon, with average temperature fluctuating between 52.2°F (11.2°C) and 78.1°F (25.6°C).

Temperature

In September, the average high-temperature marginally drops, from 83.7°F (28.7°C) in August, to a still moderately hot 78.1°F (25.6°C). In Oregon City, the average low-temperature is 52.2°F (11.2°C).

Rainfall

During September, Oregon City regularly aggregates up to 1.6" (40.9mm) of precipitation. Throughout the year, 44.2" (1122.8mm) of rain is accumulated.

Daylight

The average length of the day in September is 12.5h.

What is the temperature in September in Oregon City?

In Oregon City, in September, the average high-temperature is 78.1°F (25.6°C), and the average low-temperature is 52.2°F (11.2°C).

How much does it rain in Oregon City in September?

In Oregon City, in September, 1.6" (40.9mm) of precipitation is typically accumulated.

What is the average length of the day in September in Oregon City?

In Oregon City, the average length of the day in September is 12.5h.
Average temperature in September - Oregon City, OR
  • Average high temperature in September: 78°F

The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (46.5°F).

  • Average low temperature in September: 52.2°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is December (35.5°F).

Average rainfall in September - Oregon City, OR
  • Average rainfall in September: 1.6"

The wettest month (with the highest rainfall) is December (7.3").
Driest months (with the lowest rainfall) are July and August (0.7").

Average daylight in September - Oregon City, OR
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).