Winters in Fredericton are harsh, with temperatures often dropping below -20°C and averaging around -5°C in January. The cold air persists into February, with temperatures ranging from -23°C to 6°C. Spring brings a slow warming trend, with temperatures gradually rising above freezing by March and continuing to climb throughout April and May. Summers are mild, with temperatures rarely exceeding 30°C, while autumns are characterized by cooling temperatures, with September being the warmest month after summer. The coldest months are typically December, January, and February, while the warmest months are June, July, and August.