St John weather live forecast

Today's maximum temperature in St John is expected to be 12°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 Friday 17th October 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 Friday 17th October 2025

Expect mostly cloudy with light rain in St John, New Brunswick with a maximum temperature of 12°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 2% chance of some rain and a moderate breeze of 26 kph from the north.

  • 12°C maximum temperature12
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 2% chance of some rain2
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 12°C wind chill12
    °C wind chill
  • Moderate breeze of 26 kph from the North26
    kph wind from N

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St John weather for Saturday 18th October 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of 14°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north.

  • 14°C maximum temperature14
    °C maximum temperature
  • 9°C minimum temperature9
    °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 mm of rainfall expected0
    mm of rainfall expected
  • 14°C wind chill14
    °C wind chill
  • Moderate breeze of 20 kph from the North20
    kph wind from N

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St John weather for Sunday 19th October 2025

Expect scattered clouds in St John, New Brunswick with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south.

  • 13°C maximum temperature13
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 12 kph from the South12
    kph wind from S

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St John weather for Monday 20th October 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-east.

  • 14°C maximum temperature14
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 19 kph from the South-East19
    kph wind from SE

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St John weather for Tuesday 21st October 2025

Expect cloudy with some rain in St John, New Brunswick with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 51% chance of some rain and a moderate breeze of 21 kph from the south.

  • 14°C maximum temperature14
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 51% chance of some rain51
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 14°C wind chill14
    °C wind chill
  • Moderate breeze of 21 kph from the South21
    kph wind from S

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

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