Weather Forecast and Radar for Saint John, New Brunswick

Weather in Saint John, NB

Saint John, New Brunswick experiences all four seasons – spring, summer, autumn, and winter. The weather in Saint John is generally mild, with temperatures rarely reaching extreme highs or lows.

Spring (March to May) is mild, with temperatures ranging from 5°C to 16°C. Rainfall averages around 65–85 mm per month.

Summer (June to August) is usually warm, with temperatures reaching up to 25°C. Rainfall averages around 70–90 mm per month.

Autumn (September to November) is cool, with temperatures ranging from 5°C to 16°C. Rainfall averages around 70–85 mm per month.

Winter (December to February) is cold, with temperatures ranging from -5°C to 10°C. Rainfall averages around 75–100 mm per month. Snowfall can be expected during winter months.

Fast Facts About Saint John, NB

As of 2020, the city population is 67575.

Major Cities Nearby Saint John, NB

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Saint John, New Brunswick.