St John weather live forecast

Today's maximum temperature in St John is expected to be 72°F. 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 26th September 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 26th September 2025

Expect mostly cloudy with rain in St John, New Brunswick with a maximum temperature of 72°F, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 20-30 mm of rainfall expected with 12% chance of some rain and a fresh breeze of 21 mph from the south.

  • 72°F maximum temperature72
    °F maximum temperature
  • 61°F minimum temperature61
    °F minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 12% chance of some rain12
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • 72°F wind chill72
    °F wind chill
  • Fresh breeze of 21 mph from the South21
    mph wind from S

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St John weather for Saturday 27th September 2025

Expect scattered clouds in St John, New Brunswick with a maximum temperature of 64°F, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north-west.

  • 64°F maximum temperature64
    °F maximum temperature
  • 54°F minimum temperature54
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    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
  • Gentle breeze of 9 mph from the North-West9
    mph wind from NW

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St John weather for Sunday 28th September 2025

Expect sunshine and showers in St John, New Brunswick with a maximum temperature of 64°F, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 23% chance of some rain and a moderate breeze of 13 mph from the south-west.

  • 64°F maximum temperature64
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 23% chance of some rain23
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 13 mph from the South-West13
    mph wind from SW

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St John weather for Monday 29th September 2025

Expect clear skies in St John, New Brunswick with a maximum temperature of 70°F, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 12 mph from the west.

  • 70°F maximum temperature70
    °F maximum temperature
  • 52°F minimum temperature52
    °F minimum temperature
  • Clear skies
    clear skies
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 70°F wind chill70
    °F wind chill
  • Gentle breeze of 12 mph from the West12
    mph wind from W

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St John weather for Tuesday 30th September 2025

Expect scattered clouds in St John, New Brunswick with a maximum temperature of 64°F, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the north-west.

  • 64°F maximum temperature64
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 64°F wind chill64
    °F wind chill
  • Gentle breeze of 11 mph from the North-West11
    mph wind from NW

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