Climate almanac

Portland

Oregon, US · 45.52°, -122.68°

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What is the climate like in Portland?

Portland is warmest in August, when daily highs average 86°F (30°C), and coolest in December, when lows fall to about 38°F (3°C). The wettest month is typically December and the driest is July; the year sees roughly 50 in of precipitation.

  • Warmest monthAugust — average high 86°F (30°C)
  • Coolest monthDecember — average low 38°F (3°C)
  • Wettest monthDecember (7.9 in)
  • Driest monthJuly (0.3 in)
  • Annual precipitation50 in