Prince Rupert is waking up to a cool, damp morning on Monday, September 14, 2026, with temperatures near 11°C and mostly cloudy skies. Environment Canada says the fog and dampness should clear by Tuesday afternoon, bringing a welcome break from the humidity.
Monday carries the best chance of rain this week, with a 30 percent probability of showers or drizzle near noon. Fog patches are expected to linger until near noon, keeping the early part of the day grey and moist. The high for Monday is forecast at 16°C.
On Tuesday, September 15, the forecast calls for mainly cloudy skies that will clear later in the day. Fog patches should dissipate late in the morning, and temperatures will reach a high of 15°C. This marks the clearest window of the week before another round of wet weather moves in.
Residents can expect a mild pattern through the weekend, with daytime highs between 14 and 16°C and overnight lows from 9 to 10°C. However, shower chances increase as the week progresses, rising to 60 percent by Friday and Saturday, with periods of rain expected on Sunday.
Prince Rupert is known as Canada’s wettest city, receiving roughly 2,620 millimetres of precipitation each year. September typically brings about 266 millimetres of rain over 20 days, so moist, cloudy conditions are not unusual. The city’s coastal location on Kaien Island also makes fog a regular feature, especially during autumn and winter.
While Monday starts off gloomy, Tuesday’s clearing should offer a chance to get outside before the rain returns.
