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

September weather forecast and climate
Prineville, OR

The iconic landmark of the ancient courthouse of the Crook County in Prineville, Oregon, amid many trees with the colorful fall foliage beauty
The iconic landmark of the ancient courthouse of the Crook County in Prineville, Oregon, amid many trees with the colorful fall foliage beauty
The first month of the autumn, September, is also a moderately hot month in Prineville, Oregon, with average temperature varying between 35.8°F (2.1°C) and 77.2°F (25.1°C).

Temperature

In Prineville, Oregon, the average high-temperature in September slightly decreases, from 84.9°F (29.4°C) in August, to a still warm 77.2°F (25.1°C). The average low-temperature, is 35.8°F (2.1°C).

Rainfall

In September, in Prineville, the rain falls for 4 days. Throughout September, 0.5" (12.4mm) of precipitation is accumulated. In Prineville, Oregon, during the entire year, the rain falls for 70 days and collects up to 9.9" (251.2mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

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

What is the temperature in September in Prineville?

The average high-temperature, in September, in Prineville, Oregon, is 77.2°F (25.1°C), while the average low-temperature is 35.8°F (2.1°C).

How many days does it rain in September in Prineville?

In Prineville, Oregon, during September, the rain falls for 4 days and regularly aggregates up to 0.5" (12.4mm) of precipitation.

Does it snow in Prineville in September?

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

When it does not snow in Prineville?

May through September are months without snowfall in Prineville.

What is the average length of the day in September in Prineville?

The average length of the day in September in Prineville, Oregon, is 12.5h.
Average temperature in September - Prineville, OR
  • Average high temperature in September: 77.1°F

The warmest month (with the highest average high temperature) is July (85.9°F).
The month with the lowest average high temperature is January (42.5°F).

  • Average low temperature in September: 35.7°F

The month with the highest average low temperature is July (43.6°F).
The coldest month (with the lowest average low temperature) is January (21.1°F).

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

Wettest months (with the highest rainfall) are November and December (1.2").
Driest months (with the lowest rainfall) are July and August (0.4").

Average rainfall days in September - Prineville, OR
  • Average rainfall days in September: 4 days

Months with the highest number of rainy days are January, November and December (8 days).
The month with the lowest number of rainy days is August (2 days).

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

The month with the highest snowfall is January (4.7").
Months with the lowest snowfall are May, June, July, August and September (0").

Average daylight in September - Prineville, 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).