Grants Pass
Oregon, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Grants Pass, OR

Colorful balloons rise from the scenic grounds below into the perfect in a field near Grant Pass
Colorful balloons rise from the scenic grounds below into the perfect in a field near Grant Pass
September, the first month of the autumn, in Grants Pass, is still a warm month, with average temperature varying between 83.8°F (28.8°C) and 46°F (7.8°C).

Temperature

In September, the average high-temperature slightly decreases, from a hot 90°F (32.2°C) in August, to a moderately hot 83.8°F (28.8°C). In September, in Grants Pass, the average low-temperature is 46°F (7.8°C).

Rainfall

In Grants Pass, in September, it is raining for 3.5 days, with typically 0.6" (15.2mm) of accumulated precipitation. In Grants Pass, during the entire year, the rain falls for 121.8 days and collects up to 30.9" (785.7mm) of precipitation.

Snowfall

In Grants Pass snow does not fall in March through November.

Daylight

In Grants Pass, Oregon, the average length of the day in September is 12.5h.

What is the temperature in September in Grants Pass?

In Grants Pass, in September, the average high-temperature is 83.8°F (28.8°C), and the average low-temperature is 46°F (7.8°C).

How many days does it rain in September in Grants Pass?

In Grants Pass, Oregon, in September, it is raining for 3.5 days, with typically 0.6" (15.2mm) of accumulated precipitation.

When it does not snow in Grants Pass?

In Grants Pass, Oregon, snow does not fall in March through November.

What is the average length of the day in September in Grants Pass?

In Grants Pass, the average length of the day in September is 12.5h.
Average temperature in September - Grants Pass, OR
  • Average high temperature in September: 83.8°F

The warmest month (with the highest average high temperature) is August (89.9°F).
The month with the lowest average high temperature is December (45.8°F).

  • Average low temperature in September: 46°F

The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).

Average rainfall in September - Grants Pass, OR
  • Average rainfall in September: 0.6"

The wettest month (with the highest rainfall) is December (6.4").
Driest months (with the lowest rainfall) are July and August (0.3").

Average rainfall days in September - Grants Pass, OR
  • Average rainfall days in September: 3.5 days

The month with the highest number of rainy days is December (17.4 days).
The month with the lowest number of rainy days is July (1.8 days).

Average snowfall in September - Grants Pass, OR
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.4").
Months with the lowest snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September - Grants Pass, OR
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January, February and December (0.3 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September - Grants Pass, OR
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).