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

September weather forecast and climate
Richland, OR

September, the first month of the autumn, in Richland, is also a moderately hot month, with average temperature fluctuating between 42.1°F (5.6°C) and 81.3°F (27.4°C).

Temperature

In September, the average high-temperature decreases, from a tropical 91.2°F (32.9°C) in August, to a warm 81.3°F (27.4°C). In Richland, Oregon, the average low-temperature is 42.1°F (5.6°C).

Rainfall

In September, in Richland, the rain falls for 3 days. Throughout September, 0.5" (13.7mm) of precipitation is accumulated. Throughout the year, there are 60 rainfall days, and 11" (278.3mm) of precipitation is accumulated.

Snowfall

In Richland snow does not fall in May through September.

Daylight

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

What is the temperature in September in Richland?

In September, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 42.1°F (5.6°C).

How much does it rain in Richland in September?

In Richland, Oregon, in September, it is raining for 3 days, with typically 0.5" (13.7mm) of accumulated precipitation.

Does it snow in Richland in September?

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

When it does not snow in Richland?

In Richland snow does not fall in May through September.

How many hours of daylight does Richland have in September?

In September, the average length of the day is 12.5h.
Average temperature in September - Richland, OR
  • Average high temperature in September: 81.4°F

The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in September: 42°F

The month with the highest average low temperature is July (52.8°F).
The coldest month (with the lowest average low temperature) is January (19.7°F).

Average rainfall in September - Richland, OR
  • Average rainfall in September: 0.5"

Wettest months (with the highest rainfall) are January, May, November and December (1.3").
The driest month (with the lowest rainfall) is July (0.4").

Average rainfall days in September - Richland, OR
  • Average rainfall days in September: 3 days

Months with the highest number of rainy days are January, November and December (7 days).
The month with the lowest number of rainy days is July (2 days).

Average snowfall in September - Richland, OR
  • Average snowfall in September: 0"

The month with the highest snowfall is January (6.4").
Months with the lowest snowfall are May, June, July, August and September (0").

Average daylight in September - Richland, 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).