Weather in Portland in May
The weather in Portland in May is variable, when the days are comfortable with over 21 degrees, while it might get colder when night falls with less than 9 degrees on average. Also, there are around 18 days of rain, so it is advisable to take appropriate clothes.
Avg Temp
9° - 21°
Avg Rainy Days
18
Avg Dry Days
13
Avg Snow Days
0
Weather Facts - Portland in May
* The warmest temperature recorded in in May is 35°C
* The coldest temperature recorded in Portland in May is 3°C
* The average rainfall in Portland in May is 63 mm