St John weather live forecast

Tomorrow's maximum temperature in St John is expected to be 6°C.

  • Tuesday
    18th Mar
    Mostly cloudy with rain (10-20 mm of rainfall expected)
  • Wednesday
    19th Mar
    Clear skies
  • Thursday
    20th Mar
    Broken clouds
  • Friday
    21st Mar
    Cloudy with some rain (10-20 mm of rainfall expected)
  • Saturday
    22nd Mar
    Cloudy with sleet or snow (20-30 mm of rainfall expected)

5-day weather forecast updated at 04:00 on Tuesday 18th March 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 Tuesday 18th March 2025

Expect mostly cloudy with rain in St John, New Brunswick with a maximum temperature of 6°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 78% chance of some rain and a moderate breeze of 21 kph from the north.

  • 6°C maximum temperature6
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 78% chance of some rain78
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 2°C wind chill2
    °C wind chill
  • Moderate breeze of 21 kph from the North21
    kph wind from N

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St John weather for Wednesday 19th March 2025

Expect clear skies in St John, New Brunswick with a maximum temperature of 7°C, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

  • 7°C maximum temperature7
    °C maximum temperature
  • -2°C minimum temperature-2
    °C minimum temperature
  • Clear skies
    clear skies
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 5°C wind chill5
    °C wind chill
  • Light breeze of 10 kph from the East10
    kph wind from E

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St John weather for Thursday 20th March 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of 7°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-east.

  • 7°C maximum temperature7
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 4°C wind chill4
    °C wind chill
  • Light breeze of 12 kph from the South-East12
    kph wind from SE

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St John weather for Friday 21st March 2025

Expect cloudy with some rain in St John, New Brunswick with a maximum temperature of 6°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 88% chance of some rain and a gentle breeze of 17 kph from the east.

  • 6°C maximum temperature6
    °C maximum temperature
  • 3°C minimum temperature3
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 88% chance of some rain88
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 3°C wind chill3
    °C wind chill
  • Gentle breeze of 17 kph from the East17
    kph wind from E

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St John weather for Saturday 22nd March 2025

Expect cloudy with sleet or snow in St John, New Brunswick with a maximum temperature of 4°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 mm of sleet/snow expected with 74% chance of some sleet or snow and a moderate breeze of 23 kph from the north-west.

  • 4°C maximum temperature4
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 74% chance of some sleet or snow74
    % chance of some sleet or snow
  • 20-30 mm of sleet/snow expected<30
    mm of sleet/snow expected
  • 0°C wind chill0
    °C wind chill
  • Moderate breeze of 23 kph from the North-West23
    kph wind from NW

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Expires at 23:59 on Monday 31st Mar 2025

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

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