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St. Helens, located in the state of Oregon, experiences a maritime climate with mild temperatures year-round. Summers are warm and sunny, with temperatures ranging from an average high of 16.9°C (62.4°F) in June to an average high of 19.7°C (67.5°F) in August. Winters are cool and rainy, with temperatures ranging from an average low of 3.4°C (38.1°F) in December to an average low of 5.1°C (41.2°F) in February.
Rainfall is common throughout the year, with an average of 125.3mm (4.93 inches) of precipitation in December and an average of 94.3mm (3.71 inches) of precipitation in July. Snow is rare in St. Helens, with an average of 0.8cm (0.3 inches) of snow per year.
Overall, St. Helens experiences a moderate climate year-round, with mild temperatures and consistent rainfall.
As of 2020, the city population is 102629.
This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Saint Helens, St. Helens.