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CheckWeather CAFort St. John
Forecast confidence: High · models disagree by 2°C

Fort St. John weather

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Cloudy,much the same tomorrow

Env. Canada, the European and the American model agree on a high near 19° in Fort St. John today. Tomorrow looks cloudy around 20°, with a 0% chance of rain.

19°
20°
20°
17°
15°
14°
Todaymodels agreeTomorrowmodels agreeSundaymodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agree
Env. CanadaGEM model
16°
Mainly clear
Feels 14° · Wind 8 km/h · Humidity 57%
EuropeanECMWF
16°
Overcast
Feels 15° · Wind 4 km/h · Humidity 63%
AmericanNOAA GFS
16°
Overcast
Feels 13° · Wind 9 km/h · Humidity 53%

Latest for Fort St. John: Env. Canada (GEM model): 16° Mainly clear · European (ECMWF): 16° Overcast · American (NOAA GFS): 16° Overcast.

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Fort St. John weather in numbers

measured normals and 10 years of recorded weather

Fort St. John swings 39°C across the year, from 25°C highs in July to -14°C lows in January, and July is usually the wettest month in a year that brings about 414 mm of precipitation. Over 10 years of recorded weather it averages 21 days a year at 25°C or above, 2 of them at 30°C or above, 196 frost nights, and rain on 99 days.

Warmest month
July
25°C average high
Coldest month
January
-14°C average low
Wettest month
July
414 mm a year
Comfortable
4 months
May, June, August and September
Residents
21,000
share this forecast
Most accurate here
European
88/100 CheckWeather Score
Warm days
21 days
a year at 25°C or above
Frost nights
196 nights
a year below 0°C
Rain days
99 days
a year with 1 mm or more

Day counts are from the ERA5 reanalysis for Fort St. John’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 Fort St. John and nearby towns.Live rain radar →
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Fort St. John hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Fort St. John 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Cloudy
19°
models agree
Tomorrow
Cloudy
20°
models agree
Sun
Cloudy
20°
models agree
Mon
Mostly clear
17°
models agree
Tue
Cloudy
15°
models agree
Wed
Cloudy
14°
models agree
Thu
Partly cloudy
14°
models agree
Fri
Clear
13°
models agree
Sat
Light drizzle
14°
models agree
Sun
Mostly clear
14°
±3°
Mon
Clear
15°
±5°
Tue
Cloudy
10°
±2°
Wed
Light drizzle
±5°
Thu
Partly cloudy
13°
±7°

Fort St. John, British Columbia is at its warmest in Jul (average highs near 25°C) and coldest in Jan (lows around -14°C), with roughly 414 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Fort St. John 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.

Fort St. John climate by month

average daytime high and overnight low across a typical year
Jan
-7°
-14°
Feb
-3°
-13°
Mar
-13°
Apr
10°
-3°
May
20°
Jun
21°
Jul
25°
13°
Aug
23°
11°
Sep
18°
Oct
-1°
Nov
-2°
-9°
Dec
-3°
-11°

Which forecast is most accurate in Fort St. John?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
88
/100rank #1
94±0.3°C97±1.3 km/t7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
EC
Env. Canada
84
/100rank #2
79±1.1°C95±2.7 km/t8290% hitEnvironment and Climate Change CanadaDorval, Québec, Canada
American logo
American
81
/100rank #3
82±1.0°C93±3.6 km/t7184% hitNOAA / NCEP (United States)College Park, Maryland, USA

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 counts

The 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.

Env. CanadaGEM model
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EuropeanECMWF
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AmericanNOAA GFS
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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 separately
DayTemperatureRain
Today±2°18° to 20°models agree0% to 0% chance
Tomorrow±1°20° to 21°models agree0% to 0% chance
Sun±2°19° to 22°models agree0% to 0% chance
Mon±1°16° to 17°±19%10% to 29% chance
Tue±1°15° to 16°±6%0% to 6% chance

The 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.

Sunrise and sunset in Fort St. John

today, local time
Sunrise
06:41
Sunset
19:12
Daylight
12h 31m

Common questions

What's the weather in Fort St. John today?
On this page we show what Env. Canada, European, American each forecast for Fort St. John today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Fort St. John today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Fort St. John and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Fort St. John?
Over the last 30 days, the European model has been the most accurate for Fort St. John (CheckWeather Score 88/100), ahead of the Env. Canada at 84. We grade every model against the recorded weather. See the CA accuracy scoreboard for the full method.
What is the warmest month in Fort St. John?
July is typically the warmest month in Fort St. John, with average highs around 25°C.
How cold does Fort St. John get?
The coldest month in Fort St. John is January, when overnight lows average about -14°C.
How much rain does Fort St. John get?
Fort St. John sees roughly 414 mm of precipitation a year, with July usually the wettest month.

Nearby

More CA weather