St John weather live forecast

Today's maximum temperature in St John is expected to be 28°F. Select a day from the live weather forecast for St John, New Brunswick, Canada for more weather parameters.

5-day weather forecast updated at 04:00 on Friday 12th December 2025 GMT

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The 5-day weather forecast for New Brunswick (St John) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

St John weather forecast by day

Below are the detailed weather forecasts for St John for the next 5 days.

St John weather for Saturday 13th December 2025

Expect clear skies with flurries of snow in St John, New Brunswick with a maximum temperature of 28°F, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 42% chance of some snow and a moderate breeze of 14 mph from the west.

  • 28°F maximum temperature28
    °F maximum temperature
  • 21°F minimum temperature21
    °F minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 42% chance of some snow42
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 18°F wind chill18
    °F wind chill
  • Moderate breeze of 14 mph from the West14
    mph wind from W

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St John weather for Sunday 14th December 2025

Expect mostly cloudy with light snow in St John, New Brunswick with a maximum temperature of 30°F, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 cm of snow expected with 35% chance of some snow and a moderate breeze of 14 mph from the north.

  • 30°F maximum temperature30
    °F maximum temperature
  • 25°F minimum temperature25
    °F minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 35% chance of some snow35
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • 19°F wind chill19
    °F wind chill
  • Moderate breeze of 14 mph from the North14
    mph wind from N

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St John weather for Monday 15th December 2025

Expect mostly cloudy with light snow in St John, New Brunswick with a maximum temperature of 25°F, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0-2 cm of snow expected with 9% chance of some snow and a fresh breeze of 18 mph from the north-west.

  • 25°F maximum temperature25
    °F maximum temperature
  • 16°F minimum temperature16
    °F minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 9% chance of some snow9
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 10°F wind chill10
    °F wind chill
  • Fresh breeze of 18 mph from the North-West18
    mph wind from NW

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St John weather for Tuesday 16th December 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of 23°F, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 12 mph from the north-west.

  • 23°F maximum temperature23
    °F maximum temperature
  • 14°F minimum temperature14
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • 10°F wind chill10
    °F wind chill
  • Gentle breeze of 12 mph from the North-West12
    mph wind from NW

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St John weather for Wednesday 17th December 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of 39°F and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 18 mph from the south-west.

  • 39°F maximum temperature39
    °F maximum temperature
  • 19°F minimum temperature19
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 30°F wind chill30
    °F wind chill
  • Fresh breeze of 18 mph from the South-West18
    mph wind from SW

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