Climate Insights for Fredericton

The climate in Fredericton is cool. The average annual temperature is 6°C and approximately 1213mm of precipitation falls per year. Fredericton receives a notable amount of rainfall throughout the year, including during its driest month. Fredericton is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to -11°C. Fredericton experiences heavy snowfall, typically from January through December.

Fredericton has a wide annual temperature range, spanning 37°C from the coldest to warmest months. The warmest month is July, when average highs reach 26°C and the mean temperature sits around 20°C. The coldest month is January, when overnight lows fall to -11°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.

Fredericton is a fairly wet location, receiving approximately 1213mm of precipitation annually, which averages out to around 101mm per month. The wettest month is November, averaging 123mm of rainfall. December and January also tend to see above-average precipitation. The driest month is September, with just 74mm. That's 49mm less than November, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Fredericton receives heavy snowfall, accumulating around 290cm annually from January through December. The snowiest month is February, with approximately 67cm. Winter travel should account for significant snow cover.

Fredericton is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Fredericton, which began on June 21, 2026. Fredericton is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 26°C, while the coldest stretch bottoms out in January near -11°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Fredericton is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 88mm per month. By contrast, January can be quite cold with temperatures dropping to -11°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Fredericton based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.