St John weather live forecast

Today's maximum temperature in St John is expected to be 19°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 22nd June 2026 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 22nd June 2026

Expect broken clouds in St John, New Brunswick with a maximum temperature of 19°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south.

  • 19°C maximum temperature19
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Light breeze of 11 kph from the South11
    kph wind from S

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St John weather for Tuesday 23rd June 2026

Expect cloudy with some rain in St John, New Brunswick with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 99% chance of some rain and a moderate breeze of 20 kph from the south-east.

  • 15°C maximum temperature15
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 99% chance of some rain99
    % chance of some rain
  • 30-40 mm of rainfall expected<40
    mm of rainfall expected
  • 15°C wind chill15
    °C wind chill
  • Moderate breeze of 20 kph from the South-East20
    kph wind from SE

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St John weather for Wednesday 24th June 2026

Expect sunshine and showers in St John, New Brunswick with a maximum temperature of 21°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 50% chance of some rain and a gentle breeze of 14 kph from the north-west.

  • 21°C maximum temperature21
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 50% chance of some rain50
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 21°C wind chill21
    °C wind chill
  • Gentle breeze of 14 kph from the North-West14
    kph wind from NW

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St John weather for Thursday 25th June 2026

Expect broken clouds in St John, New Brunswick with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south.

  • 21°C maximum temperature21
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 10 kph from the South10
    kph wind from S

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St John weather for Friday 26th June 2026

Expect mostly cloudy with rain in St John, New Brunswick with a maximum temperature of 18°C, maximum UV of 6 (High) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 13 kph from the south.

  • 18°C maximum temperature18
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 79% chance of some rain79
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 18°C wind chill18
    °C wind chill
  • Gentle breeze of 13 kph from the South13
    kph wind from S

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