St John weather live forecast

Tomorrow's maximum temperature in St John is expected to be 25°C.

5-day weather forecast updated at 04:00 on Saturday 5th July 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 5th July 2025

Expect sunshine and showers in St John, New Brunswick with a maximum temperature of 25°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0-2 mm of rainfall expected with 2% chance of some rain and a gentle breeze of 14 kph from the west.

  • 25°C maximum temperature25
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 2% chance of some rain2
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 25°C wind chill25
    °C wind chill
  • Gentle breeze of 14 kph from the West14
    kph wind from W

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St John weather for Sunday 6th July 2025

Expect scattered clouds in St John, New Brunswick with a maximum temperature of 20°C, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the south.

  • 20°C maximum temperature20
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 24 kph from the South24
    kph wind from S

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St John weather for Monday 7th July 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of 19°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south.

  • 19°C maximum temperature19
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 14 kph from the South14
    kph wind from S

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St John weather for Tuesday 8th July 2025

Expect isolated thunderstorms in St John, New Brunswick with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 57% chance of some rain and a light breeze of 9 kph from the south.

  • 19°C maximum temperature19
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 57% chance of some rain57
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 9 kph from the South9
    kph wind from S

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St John weather for Wednesday 9th July 2025

Expect sunshine and showers in St John, New Brunswick with a maximum temperature of 23°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a light breeze of 9 kph from the east.

  • 23°C maximum temperature23
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 20% chance of some rain20
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 9 kph from the East9
    kph wind from E

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

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