Moosoone, Ontario, -5,0°C, 2°C from All-time June Record, Key Lake, Saskatchewan probably Surpassed its June Record Earlier

On June 20th, 2025, Moosonee, Ontario, experienced an unusually cold morning with temperatures plummeting to -5.0°C. This marked the coldest June temperature in the region was just 2°C above the all-time June low of -7.0°C. Such a significant drop is highly atypical for this time of year, especially considering the average June low is around 10°C.

Moosonee’s climate is characterized by cold winters and relatively warm summers, with average daily highs in June around 21°C. The occurrence of such a low temperature in early June highlights the complexity and unpredictability of weather patterns in the area.

While this event did not break the all-time June low, it serves as a reminder of the potential for extreme weather events, even in late spring. Residents and visitors to northern Ontario should remain vigilant and prepared for sudden shifts in weather conditions.

Interesting was a minimum temperature in Key Lake, Saskatchewan, -4.5°C on June 21th 2025, too – all-time June record for the station is -5.0°C. Earlier in June (from June 5th to June 6th), -5.1°C was measured at the station, with a possibility of surpassing the all-time June record.