15-Day Weather Forecast - Boston
15-day weather forecast for Boston: temperatures from 10°C (50°F) to 26°C (79°F). Average daily high 20°C (68°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
Boston's 15-day outlook ranges from a low of 10°C to a high of 26°C, with an average daytime high near 20°C. That's 4° below the long-term average high of 24°C for this time of year. It continues a recent pattern — 7 of the last 19 days with published data have run cooler than normal. Air quality is currently good (AQI 46), with no notable outdoor health concerns.
Today vs Normal
The long-term average high for today is 24°C.
7 of the last 19 days with published data ran above normal.
That's a break from the pattern - today's forecast runs above normal even though the recent stretch mostly ran below.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Extended Outlook for Boston
Over the next 15 days, Boston is forecast to see temperatures ranging from 10°C to 27°C, averaging a daily high of 20°C. The extended outlook indicates significant rainfall totalling 77.3 mm spread across 8 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.