15-Day Weather Forecast - Boulder
15-day weather forecast for Boulder: temperatures from 9°C (48°F) to 33°C (91°F). Average daily high 28°C (82°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
Boulder's 15-day outlook ranges from a low of 9°C to a high of 33°C, with an average daytime high near 28°C. That's 1° above the long-term average high of 27°C for this time of year. It continues a recent pattern — 24 of the last 28 days with published data have run warmer than normal. Air quality is currently good (AQI 22), with no notable outdoor health concerns.
Today vs Normal
The long-term average high for today is 27°C.
24 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
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 Boulder
Over the next 15 days, Boulder is forecast to see temperatures ranging from 9°C to 34°C, averaging a daily high of 28°C. The extended outlook indicates occasional showers on 7 days, with 10.4 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.