John Day Fossil Beds National Monument
Oregon, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
John Day Fossil Beds National Monument, OR

A scenic hillside view of the Painted Hills Unit, in John Day Fossil Beds National Monument, Oregon
A scenic hillside view of the Painted Hills Unit, in John Day Fossil Beds National Monument, Oregon
The first month of the autumn, September, is still a warm month in John Day Fossil Beds National Monument, Oregon, with average temperature varying between 77°F (25°C) and 44.1°F (6.7°C).

Temperature

In John Day Fossil Beds National Monument, Oregon, the average high-temperature in September decreases, from a hot 86°F (30°C) in August, to a warm 77°F (25°C). The average low-temperature, in September, is 44.1°F (6.7°C).

Rainfall

In John Day Fossil Beds National Monument, in September, 0.7" (17mm) of precipitation is typically accumulated. Throughout the year, 11.4" (288.4mm) of rain is accumulated.

Daylight

In John Day Fossil Beds National Monument, the average length of the day in September is 12.5h.

What is the temperature in September in John Day Fossil Beds National Monument?

In September, in John Day Fossil Beds National Monument, Oregon, the average high-temperature is 77°F (25°C), and the average low-temperature is 44.1°F (6.7°C).

How much does it rain in John Day Fossil Beds National Monument in September?

During September, John Day Fossil Beds National Monument regularly aggregates up to 0.7" (17mm) of precipitation.

How many hours of daylight does John Day Fossil Beds National Monument have in September?

In John Day Fossil Beds National Monument, the average length of the day in September is 12.5h.
Average temperature in September - John Day Fossil Beds National Monument, OR
  • Average high temperature in September: 77°F

Warmest months (with the highest average high temperature) are July and August (86°F).
Months with the lowest average high temperature are January and December (42°F).

  • Average low temperature in September: 44°F

Months with the highest average low temperature are July and August (52°F).
The coldest month (with the lowest average low temperature) is January (24°F).

Average rainfall in September - John Day Fossil Beds National Monument, OR
  • Average rainfall in September: 0.7"

The wettest month (with the highest rainfall) is May (1.7").
The driest month (with the lowest rainfall) is July (0.6").

Average daylight in September - John Day Fossil Beds National Monument, OR
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).