Port Colborne, Ontario, is under a risk of thunderstorms this afternoon as a humid air mass settles over the region, according to Environment Canada. The federal agency forecasts a 60 per cent chance of showers, with the potential for scattered storms developing later in the day.
As of 2:00 p.m. Monday, July 6, 2026, the temperature at the Welland-Pelham monitoring station sat at 23°C, with humidity measured at 82 per cent. That combination pushed the Humidex reading to 30, making it feel much warmer than the thermometer suggests. Environment Canada says the high today will reach 25°C, but with a forecast Humidex of 33 it will feel sticky and uncomfortable for anyone spending time outdoors.
The The Weather Network calls for a 70 per cent probability of rain in Port Colborne, with between 1 and 3 millimetres of precipitation expected. Storms that do develop could pack a punch – over the past few days Environment Canada has issued severe thunderstorm watches for parts of the Niagara Region, warning of wind gusts up to 100 km/h, heavy downpours, and hail the size of ping-pong balls.
Relief is on the way. Tuesday will bring a mix of sun and cloud with a high of 27°C and another Humidex of 33. By Wednesday, the forecast calls for sunny skies and a high of 29°C. Another chance of showers is expected to return on Thursday, with a 30 per cent probability accompanying a high of 28°C.
Residents are encouraged to keep an eye on the sky this afternoon and have a plan to seek shelter if thunderstorms develop. Outdoor activities – including sports, gardening, and trips to the beach or marina – may need to be postponed until conditions improve mid-week.
