Boston Weather Beacon

The light on top of the Berkeley Building has told Boston the forecast in color for decades. This one reads the live forecast.

• Steady blue, clear view: clear or mainly clear skies.
• Flashing blue, clouds due: partly cloudy, overcast or fog.
• Steady red, rain ahead: drizzle, rain, showers or thunderstorms.
• Flashing red, snow instead: snow or snow showers.

Forecast data from Open-Meteo.