South Arm weather
Loading live data…Drizzle,rain likely tomorrow
Env. Canada, the European and the American model put South Arm's high today between 9° and 12°, a 3° split. Tomorrow: drizzle, around 13°, with a 94% chance of rain.
Latest for South Arm: Env. Canada (GEM model): 7° Mainly clear · European (ECMWF): 7° Light drizzle · American (NOAA GFS): 5° Overcast.
CheckWeather.io on iPhoneFree. No ads, no account.South Arm weather in numbers
from 30 years of measured normalsSouth Arm swings 22°C across the year, from 23°C highs in August to 1°C lows in January, and November is usually the wettest month in a year that brings about 1464 mm of precipitation.
The weather map: all three models at once
Env. Canada, European, American side by side around South Arm and nearby towns.Live rain radar →South Arm 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…
South Arm 10-day forecast, out to 14 days
where the models agree, and where they splitSouth Arm, British Columbia is at its warmest in Aug (average highs near 23°C) and coldest in Jan (lows around 1°C), with roughly 1464 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for South Arm 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.
South Arm 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 South Arm has changed since 1995
South Arm sits in the same roughly 50 km square of NASA's reanalysis as Vancouver. That square shows no clear change in temperature between 1995-2004 and 2015-2024. See the full 30-year picture on the Vancouver page.
Which forecast is most accurate in South Arm?
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.