St John weather live forecast

Today's maximum temperature in St John is expected to be 39°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 Saturday 14th March 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 Saturday 14th March 2026

Expect cloudy with sleet or snow in St John, New Brunswick with a maximum temperature of 39°F, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 79% chance of some sleet or snow and a moderate breeze of 16 mph from the south-east.

  • 39°F maximum temperature39
    °F maximum temperature
  • 30°F minimum temperature30
    °F minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 79% chance of some sleet or snow79
    % chance of some sleet or snow
  • 10-20 mm of sleet/snow expected<20
    mm of sleet/snow expected
  • 30°F wind chill30
    °F wind chill
  • Moderate breeze of 16 mph from the South-East16
    mph wind from SE

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St John weather for Sunday 15th March 2026

Expect broken clouds in St John, New Brunswick with a maximum temperature of 36°F, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the north-west.

  • 36°F maximum temperature36
    °F maximum temperature
  • 28°F minimum temperature28
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 28°F wind chill28
    °F wind chill
  • Gentle breeze of 11 mph from the North-West11
    mph wind from NW

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St John weather for Monday 16th March 2026

Expect mostly cloudy with rain in St John, New Brunswick with a maximum temperature of 48°F, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 99% chance of some rain and a strong breeze of 24 mph from the south-east.

  • 48°F maximum temperature48
    °F maximum temperature
  • 30°F minimum temperature30
    °F minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 99% chance of some rain99
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 41°F wind chill41
    °F wind chill
  • Strong breeze of 24 mph from the South-East24
    mph wind from SE

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St John weather for Tuesday 17th March 2026

Expect mostly cloudy with rain in St John, New Brunswick with a maximum temperature of 52°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 30-40 mm of rainfall expected with 86% chance of some rain and a strong breeze of 29 mph from the south.

  • 52°F maximum temperature52
    °F maximum temperature
  • 32°F minimum temperature32
    °F minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 86% chance of some rain86
    % chance of some rain
  • 30-40 mm of rainfall expected<40
    mm of rainfall expected
  • 52°F wind chill52
    °F wind chill
  • Strong breeze of 29 mph from the South29
    mph wind from S

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St John weather for Wednesday 18th March 2026

Expect clear skies in St John, New Brunswick with a maximum temperature of 30°F, maximum UV of 3 (Moderate) and 12 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 16 mph from the west.

  • 30°F maximum temperature30
    °F maximum temperature
  • 21°F minimum temperature21
    °F minimum temperature
  • Clear skies
    clear skies
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 cm of snow expected0
    cm of snow expected
  • 19°F wind chill19
    °F wind chill
  • Moderate breeze of 16 mph from the West16
    mph wind from W

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