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

September weather forecast and climate
Prospect, OR

September, the first month of the autumn, in Prospect, is still a warm month, with average temperature ranging between max 79.9°F (26.6°C) and min 41.2°F (5.1°C).

Temperature

In September, the average high-temperature marginally drops, from a tropical 86.4°F (30.2°C) in August, to a moderately hot 79.9°F (26.6°C). In Prospect, in September, the average low-temperature is 41.2°F (5.1°C).

Rainfall

In September, the rain falls for 5 days. Throughout September, 1.3" (33.3mm) of precipitation is accumulated. Throughout the year, in Prospect, there are 125 rainfall days, and 40.8" (1036.4mm) of precipitation is accumulated.

Snowfall

In Prospect, it doesn't snow. In October, it regularly snows. Throughout the year, in Prospect, 53.3" (1353.8mm) of snow is accumulated.

Daylight

The average length of the day in September in Prospect is 12.5h.

What is the temperature in September in Prospect?

The average high-temperature, in September, is 79.9°F (26.6°C), while the average low-temperature is 41.2°F (5.1°C).

How many days does it rain in September in Prospect?

In Prospect, Oregon, in September, it is raining for 5 days, with typically 1.3" (33.3mm) of accumulated precipitation.

Does it snow in Prospect in September?

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

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

The average length of the day in September in Prospect is 12.5h.
Average temperature in September - Prospect, OR
  • Average high temperature in September: 79.9°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (45.8°F).

  • Average low temperature in September: 41.1°F

The month with the highest average low temperature is July (47.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average rainfall in September - Prospect, OR
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is December (6.7").
The driest month (with the lowest rainfall) is July (0.5").

Average rainfall days in September - Prospect, OR
  • Average rainfall days in September: 5 days

Months with the highest number of rainy days are January, March and December (16 days).
Months with the lowest number of rainy days are July and August (2 days).

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

The month with the highest snowfall is January (17.2").
Months with the lowest snowfall are June, July, August and September (0").

Average daylight in September - Prospect, OR
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).