Portland - Recent September Temperatures and Rainfall





The numbers here describe what the September weather in Portland, Oregon was like for every year since 2010. A series of tables gives September data by year for temperature and precipitation.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many really hot days occurred each September. Then there's information on how much rain actually landed this month during recent years, as well as how often Portland had wet weather.

The climate data come from weather measurements made at the Weather Forecast Office near downtown Portland.

Temperature Weather iconTemperature

September temperature averages by year in Portland
High °F Low °F Year High °C Low °C
75 51 2018 24 11
77 55 2017 25 13
74 51 2016 23 11
74 52 2015 23 11
78 56 2014 26 13
73 56 2013 23 13
78 52 2012 26 11
79 55 2011 26 13
73 55 2010 23 13
Number of days in September when the temperature in Portland rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2018 20 1
2017 21 6
2016 23 0
2015 21 1
2014 25 3
2013 15 2
2012 26 1
2011 23 5
2010 21 0

Rainy Weather iconRain

This table gives the total precipitation that fell on Portland during September in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.254 millimeters) or more.

Total rainfall for September in Portland
Days Year Inches Milli­metres
8 2018 1.1 27
8 2017 2.5 64
7 2016 1.6 41
10 2015 1.4 35
6 2014 0.9 24
13 2013 6.2 158
2 2012 0.1 2
7 2011 1.0 25
12 2010 2.6 65
Reference

Jay Lawrimore. 2016. Global Summary of the Month, Version 1.0. NOAA National Centers for Environmental Information. 

Portland - Recent Years
Portland - Extremes
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