Saint John 7-day weather forecast

Written by:
December 15, 2025
ESOlex // Shutterstock

Saint John 7-day weather forecast

Stacker created the forecast for Saint John, New Brunswick using data from OpenWeather. This week's high is 12 °C on Friday, while the low is -10 °C on Tuesday. There is expected to be 1 sunny day and rain on 2 days this week.

There are currently no weather alerts.

Monday, December 15

- High of -6 °C, low of -9 °C (69% humidity)
- Partly cloudy with a 0% chance of snow
- Light breeze (23 km/h wind)
- Sunrise at 7:56 AM, sunset at 4:42 PM
1 / 6
Leonid Ikan // Shutterstock

Tuesday, December 16

- High of -3 °C, low of -10 °C (60% humidity)
- Partly cloudy with a 0% chance of snow
- Light breeze (16 km/h wind)
- Sunrise at 7:57 AM, sunset at 4:42 PM
2 / 6
alisalipa // Shutterstock

Wednesday, December 17

- High of 6 °C, low of 0 °C (78% humidity)
- Mostly cloudy with a 0% chance of snow
- Gentle breeze (34 km/h wind)
- Sunrise at 7:58 AM, sunset at 4:42 PM
3 / 6
LeManna // Shutterstock

Thursday, December 18

- High of 4 °C, low of -3 °C (55% humidity)
- Sunny with a 0% chance of snow
- Gentle breeze (28 km/h wind)
- Sunrise at 7:58 AM, sunset at 4:43 PM
4 / 6
Leonid Ikan // Shutterstock

Friday, December 19

- High of 12 °C, low of 0 °C (86% humidity)
- Overcast with a 100% chance of rain (21 mm of rain)
- Moderate breeze (46 km/h wind)
- Sunrise at 7:59 AM, sunset at 4:43 PM
- New moon
5 / 6
Nataliia K // Shutterstock

Saturday, December 20

- High of -4 °C, low of -7 °C (42% humidity)
- Partly cloudy with a 0% chance of snow
- Gentle breeze (29 km/h wind)
- Sunrise at 8:00 AM, sunset at 4:43 PM
6 / 6
John Cartwright // Shutterstock

Sunday, December 21

- High of 6 °C, low of -4 °C (95% humidity)
- Overcast with a 100% chance of rain (16 mm of rain)
- Gentle breeze (29 km/h wind)
- Sunrise at 8:00 AM, sunset at 4:44 PM

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