15-Day Weather Forecast - St. John's
15-day weather forecast for St. John's: temperatures from 7°C (45°F) to 18°C (64°F). Average daily high 15°C (59°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
St. John's's 15-day outlook ranges from a low of 7°C to a high of 18°C, with an average daytime high near 15°C. Air quality is currently good (AQI 39), with no notable outdoor health concerns.
Today vs Normal
The long-term average high for today is 15°C.
16 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 St. John's
Over the next 15 days, St. John's is forecast to see temperatures ranging from 6°C to 19°C, averaging a daily high of 15°C. The extended outlook indicates significant rainfall totalling 38.2 mm spread across 6 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.