John Day
Oregon, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
John Day, OR

The iconic Painted Hills in the famous John Day Fossil Beds National Monument, Oregon, are a famed top tourist spot with the surrounding scape
The iconic Painted Hills in the famous John Day Fossil Beds National Monument, Oregon, are a famed top tourist spot with the surrounding scape
The first month of the autumn, September, is still a warm month in John Day, Oregon, with average temperature fluctuating between 40.6°F (4.8°C) and 79°F (26.1°C).

Temperature

In September, the average high-temperature slightly decreases, from a hot 87.6°F (30.9°C) in August, to a warm 79°F (26.1°C). The average low-temperature, in September, is 40.6°F (4.8°C).

Rainfall

In John Day, it is raining for 5 days, with typically 0.7" (17.8mm) of accumulated precipitation. Throughout the year, there are 103 rainfall days, and 13.2" (335.1mm) of precipitation is accumulated.

Snowfall

In John Day snow does not fall in June through September.

Daylight

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

What is the temperature in September in John Day?

The average high-temperature, in September, is 79°F (26.1°C), while the average low-temperature is 40.6°F (4.8°C).

How much does it rain in John Day in September?

In September, in John Day, the rain falls for 5 days. Throughout September, 0.7" (17.8mm) of precipitation is accumulated.

Does it snow in John Day in September?

In John Day, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in John Day?

In John Day snow does not fall in June through September.

How many hours of daylight does John Day have in September?

In September, the average length of the day in John Day is 12.5h.
Average temperature in September - John Day, OR
  • Average high temperature in September: 78.9°F

The warmest month (with the highest average high temperature) is July (88.4°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in September: 40.7°F

The month with the highest average low temperature is July (49.1°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average rainfall in September - John Day, OR
  • Average rainfall in September: 0.7"

The wettest month (with the highest rainfall) is May (1.8").
The driest month (with the lowest rainfall) is July (0.5").

Average rainfall days in September - John Day, OR
  • Average rainfall days in September: 5 days

Months with the highest number of rainy days are January, March, April, May, November and December (11 days).
The month with the lowest number of rainy days is July (3 days).

Average snowfall in September - John Day, OR
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5.9").
Months with the lowest snowfall are June, July, August and September (0").

Average daylight in September - John Day, 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).