Lethbridge's winters are harsh and variable, with temperatures often dropping below -30°C in January and February, but occasionally rising above freezing. Spring arrives slowly, with March and April temperatures gradually warming up towards the mid-teens Celsius. Summer is warm to hot, with July typically being the warmest month, while August can be slightly cooler. Autumn brings a return of cooler temperatures, with September often feeling chilly despite occasional warmth. Winter returns with a vengeance in November and December, bringing frosty conditions that rival those of the coldest winter months.