St. John's weather
Loading live data…Heavy drizzle,rain likely tomorrow
Env. Canada, the European and the American model agree on a high near 13° in St. John's today. Tomorrow looks light drizzle around 11°, with a 45% chance of rain.
Latest for St. John's: Env. Canada (GEM model): 9° Overcast · European (ECMWF): 10° Overcast · American (NOAA GFS): 7° Light drizzle.
CheckWeather.io on iPhoneFree. No ads, no account.St. John's weather in numbers
measured normals and 10 years of recorded weatherSt. John's swings 27°C across the year, from 21°C highs in July to -6°C lows in February, and November is usually the wettest month in a year that brings about 1602 mm of precipitation. Over 10 years of recorded weather it averages 6 days a year at 25°C or above, 134 frost nights, and rain on 159 days.
Day counts are from the ERA5 reanalysis for St. John's’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.
The weather map: all three models at once
Env. Canada, European, American side by side around St. John's and nearby towns.Live rain radar →St. John's hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
St. John's 10-day forecast, out to 14 days
where the models agree, and where they splitSt. John's, Newfoundland and Labrador is at its warmest in Jul (average highs near 21°C) and coldest in Feb (lows around -6°C), with roughly 1602 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for St. John's right now, and see exactly where they disagree.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in Canada before you trust any single number.
St. John's climate by month
average daytime high and overnight low across a typical yearWhich forecast is most accurate in St. John's?
CheckWeather Score, graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1304 cities. Lower error means a higher score. See which forecast model is most accurate in Canada, how we measure forecast accuracy, or which model each weather app uses.
What do you think of the forecasts?
your vote countsThe accuracy above is the measured record. This is your opinion: which forecast service do you trust most in Canada? Give each 1 to 5 stars.
One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.