St John weather live forecast

Today's maximum temperature in St John is expected to be 73°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 Thursday 31st 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 Thursday 31st July 2025

Expect mostly cloudy with light rain in St John, New Brunswick with a maximum temperature of 73°F, maximum UV of 6 (High) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 5% chance of some rain and a light breeze of 7 mph from the north-west.

  • 73°F maximum temperature73
    °F maximum temperature
  • 61°F minimum temperature61
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 5% chance of some rain5
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 73°F wind chill73
    °F wind chill
  • Light breeze of 7 mph from the North-West7
    mph wind from NW

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St John weather for Friday 1st August 2025

Expect broken clouds in St John, New Brunswick with a maximum temperature of 68°F, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the north-east.

  • 68°F maximum temperature68
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    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 6 mph from the North-East6
    mph wind from NE

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St John weather for Saturday 2nd August 2025

Expect scattered clouds in St John, New Brunswick with a maximum temperature of 72°F, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the south-west.

  • 72°F maximum temperature72
    °F maximum temperature
  • 55°F minimum temperature55
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 72°F wind chill72
    °F wind chill
  • Light breeze of 6 mph from the South-West6
    mph wind from SW

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St John weather for Sunday 3rd August 2025

Expect sunshine and showers in St John, New Brunswick with a maximum temperature of 72°F, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 14 mph from the south-west.

  • 72°F maximum temperature72
    °F maximum temperature
  • 55°F minimum temperature55
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 14 hours of bright sunshine14
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 25% chance of some rain25
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 72°F wind chill72
    °F wind chill
  • Moderate breeze of 14 mph from the South-West14
    mph wind from SW

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St John weather for Monday 4th August 2025

Expect isolated thunderstorms in St John, New Brunswick with a maximum temperature of 73°F, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a gentle breeze of 9 mph from the south-west.

  • 73°F maximum temperature73
    °F maximum temperature
  • 57°F minimum temperature57
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 52% chance of some rain52
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 9 mph from the South-West9
    mph wind from SW

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