St John weather live forecast

Today's maximum temperature in St John is expected to be -6°C. 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 Monday 15th 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 Monday 15th December 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of -6°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a fresh breeze of 30 kph from the north-west.

  • -6°C maximum temperature-6
    °C maximum temperature
  • -8°C minimum temperature-8
    °C 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
  • -14°C wind chill-14
    °C wind chill
  • Fresh breeze of 30 kph from the North-West30
    kph wind from NW

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St John weather for Tuesday 16th December 2025

Expect scattered clouds in St John, New Brunswick with a maximum temperature of -1°C, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 19 kph from the west.

  • -1°C maximum temperature-1
    °C maximum temperature
  • -9°C minimum temperature-9
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -7°C wind chill-7
    °C wind chill
  • Gentle breeze of 19 kph from the West19
    kph wind from W

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St John weather for Wednesday 17th December 2025

Expect mostly cloudy with light rain in St John, New Brunswick with a maximum temperature of 5°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 11% chance of some rain and a fresh breeze of 34 kph from the south-west.

  • 5°C maximum temperature5
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 11% chance of some rain11
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 0°C wind chill0
    °C wind chill
  • Fresh breeze of 34 kph from the South-West34
    kph wind from SW

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St John weather for Thursday 18th December 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of 6°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 33 kph from the south.

  • 6°C maximum temperature6
    °C maximum temperature
  • -2°C minimum temperature-2
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 1°C wind chill1
    °C wind chill
  • Fresh breeze of 33 kph from the South33
    kph wind from S

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St John weather for Friday 19th December 2025

Expect mostly cloudy with rain in St John, New Brunswick with a maximum temperature of 10°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 84% chance of some rain and a fresh breeze of 37 kph from the south.

  • 10°C maximum temperature10
    °C maximum temperature
  • 3°C minimum temperature3
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 84% chance of some rain84
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 6°C wind chill6
    °C wind chill
  • Fresh breeze of 37 kph from the South37
    kph wind from S

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Metric (°C / mm)  |  Imperial (°F / inches)

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