The weather in St. Helens for 14 days
This graph shows the temperature in St. Helens for the next 14 days, indicated in degrees Celsius.
Precipitation in St. Helens for 14 days
This graph shows the precipitation in St. Helens for the next 14 days, indicated in millimeters.weather
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Average weather in St. Helens per month
Click on a month below to see in detail how the weather typically is in St. Helens and what to expect. Based on the historical weather data of St. Helens, you can view the average temperature, precipitation, wind, and UV index for each day of the month.