15-Day Weather Forecast - Basel
15-day weather forecast for Basel: temperatures from 6°C (43°F) to 28°C (82°F). Average daily high 21°C (70°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
Basel's 15-day outlook ranges from a low of 6°C to a high of 28°C, with an average daytime high near 21°C. That's 1° above the long-term average high of 20°C for this time of year. It continues a recent pattern — 25 of the last 28 days with published data have run warmer than normal. Air quality is currently good (AQI 32), with no notable outdoor health concerns.
Today vs Normal
The long-term average high for today is 20°C.
25 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 Basel
Over the next 15 days, Basel is forecast to see temperatures ranging from 5°C to 28°C, averaging a daily high of 21°C. The extended outlook indicates occasional showers on 5 days, with 21.6 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.