In terms of precipitation, rainfall in Portland ranges from 18.0 - 142.0 inches per month. November is typically the wettest month, when rainfall can reach 142.0 mm. July is typically the driest time to visit Portland when rainfall is around 18.0 mm.
If weather is an important factor for your trip to Portland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).
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