Duncan weather
Loading live data…Light rain,rain likely tomorrow
Env. Canada, the European and the American model put Duncan's high today between 9° and 12°, a 3° split. Tomorrow: light rain, around 12°, with a 100% chance of rain.
Latest for Duncan: Env. Canada (GEM model): 5° Partly cloudy · European (ECMWF): 6° Light drizzle · American (NOAA GFS): 3° Overcast.
CheckWeather.io on iPhoneFree. No ads, no account.Duncan weather in numbers
measured normals and 10 years of recorded weatherDuncan swings 25°C across the year, from 25°C highs in July to 0°C lows in December, and November is usually the wettest month in a year that brings about 1365 mm of precipitation. Over 10 years of recorded weather it averages 41 days a year at 25°C or above, 9 of them at 30°C or above, 56 frost nights, and rain on 154 days.
Day counts are from the ERA5 reanalysis for Duncan’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 Duncan and nearby towns.Live rain radar →Duncan 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…
Duncan 10-day forecast, out to 14 days
where the models agree, and where they splitDuncan, British Columbia is at its warmest in Jul (average highs near 25°C) and coldest in Dec (lows around 0°C), with roughly 1365 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Duncan 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.
Duncan climate by month
average daytime high and overnight low across a typical year (1991-2020)Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How the weather around Duncan has changed since 1995
Duncan sits in the same roughly 50 km square of NASA's reanalysis as Nanaimo. That square ran 0.5°C warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Nanaimo page.
Which forecast is most accurate in Duncan?
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 1320 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.