St. Johns 7-Day Weather Forecast

Plan ahead with our detailed weekly forecast for St. Johns. All data is sourced from the National Weather Service and updated regularly throughout the day.

Winter Weather in St. Johns

St. Johns typically experiences snow several times each winter season, though accumulation varies significantly year to year. The neighborhood's lower elevation near the Willamette River sometimes means less snow accumulation compared to Portland's west hills.

Snow Season Timeline

In the Portland area, snow is most common between December and February, with occasional events in November and March. The National Weather Service monitors conditions closely and issues winter weather advisories when snow is expected.

What to Expect During Snow Events

When it does snow in St. Johns, residents should be prepared for:

  • Road conditions: Bridge approaches and overpasses freeze first. The St. Johns Bridge can become hazardous quickly.
  • Public transit: TriMet may reduce or suspend bus service on hills and in adverse conditions.
  • Temperature fluctuations: Portland snow often occurs near 32°F, leading to freeze-thaw cycles.
  • Mixed precipitation: Rain, sleet, and freezing rain often accompany or follow snow events.

Staying Informed

This website pulls data directly from the National Weather Service API, ensuring you have access to official forecasts and warnings. We update conditions in real-time, so you can check back anytime to see if snow is currently falling in St. Johns.