Typical Weather in Portland, OR in May
68° F Avg High
49° F Avg Low
7 Rainy Days
☀️ Temperature Summary
Compared to other months, Portland experiences cooler conditions in May, with daytime highs averaging 68°F. Lows overnight are typically around 49°F.
May is a great time to visit Portland, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
☔ Rain Summary
In May you can expect close to a 23% chance of rain for any given day. It rains less than usual in May, with total rainfall for the month typically near 2 inches.
Rainfall Throughout the Year
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📍 Nearby Cities in May
65°F
/
37°F
72°F
/
46°F
68°F
/
44°F
60°F
/
48°F
75°F
/
50°F
69°F
/
40°F
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