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

September weather forecast and climate
Monument, OR

September, the first month of the autumn, in Monument, is also a moderately hot month, with average temperature ranging between max 80.8°F (27.1°C) and min 40.8°F (4.9°C).

Temperature

In September, the average high-temperature decreases, from a hot 90.3°F (32.4°C) in August, to a warm 80.8°F (27.1°C). The average low-temperature, in September, is 40.8°F (4.9°C).

Rainfall

In Monument, in September, it is raining for 4 days, with typically 0.6" (14mm) of accumulated precipitation. In Monument, during the entire year, the rain falls for 90 days and collects up to 13.4" (340.4mm) of precipitation.

Snowfall

In Monument, it doesn't snow. In October, it regularly snows. Throughout the year, in Monument, Oregon, 14.4" (365.7mm) of snow is accumulated.

Daylight

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

What is the temperature in September in Monument?

The average high-temperature, in September, in Monument, is 80.8°F (27.1°C), while the average low-temperature is 40.8°F (4.9°C).

How many days does it rain in September in Monument?

In Monument, Oregon, during September, the rain falls for 4 days and regularly aggregates up to 0.6" (14mm) of precipitation.

Does it snow in Monument in September?

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

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

In Monument, the average length of the day in September is 12.5h.
Average temperature in September - Monument, OR
  • Average high temperature in September: 80.7°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (42.3°F).

  • Average low temperature in September: 40.9°F

The month with the highest average low temperature is July (49.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average rainfall in September - Monument, OR
  • Average rainfall in September: 0.6"

Wettest months (with the highest rainfall) are January, May, November and December (1.5").
The driest month (with the lowest rainfall) is July (0.5").

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

Months with the highest number of rainy days are January, March, November and December (10 days).
Months with the lowest number of rainy days are July and August (3 days).

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

The month with the highest snowfall is December (4.6").
Months with the lowest snowfall are May, June, July, August and September (0").

Average daylight in September - 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).