Saint John, New Brunswick, Canada Climate Change Severity

52
High
The current climate change severity in Saint John is High, with a 15.07% worsening in the climate score compared to last 16 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Jul. (Historical Vs 2026) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Saint John Weather Condition Changes (Historic Vs 2026)

2026
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2026

Over the past 16 year(s), Saint John temperature has changed by around +9.5%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Jul. (Historical Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

HistoricDays

Year 2026Days

Change

sunnySunny
2463
162.5%
cloudyCloudy
5126
-49.01%
rainyRainy
7752
-32.4%
snowySnowy
1116
45.4%
mistyMisty
13
200%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 16 years, Saint John has experienced measurable shifts in key climate parameters, contributing to the current severity score of 52 (within the High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

52/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2026, Saint John experienced significant changes:

Temperature change of

+0.5 °C

Variation in annual rainfall

+53.66 %

Change in average humidity

-5.36 %

PM2.5 levels surged by

-8.97 %

Heatwave changed by

-1 Day

Coldwave changed by

-5 Days

Wind speeds changed by

-2.76 km/h

These indicators show that Saint John is experiencing a more volatile and extreme climate, reinforcing the need for urgent intervention to mitigate risks. As the severity score rises, focus must shift to adaptation and emergency preparedness.

Check how we calculate Climate Change Severity
Based on data from Jan. to Jul.

Saint John Weather Forecast 30 Days (August - September 2026)
Saint John, New Brunswick, Canada

Condition
Temperature IconTemperature
Humidity IconHumi.
Wind IconWind Speed
Mon. 10, Aug.
sunnySunny
Temperature Icon27°/14°
Humidity Icon81%
Wind Icon15.5km/h
Tue. 11, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon23°/13°
Humidity Icon84%
Wind Icon13.7km/h
Wed. 12, Aug.
sunnySunny
Temperature Icon24°/14°
Humidity Icon74%
Wind Icon15.5km/h
Thu. 13, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon21°/13°
Humidity Icon86%
Wind Icon14.8km/h
Fri. 14, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon20°/12°
Humidity Icon75%
Wind Icon18.4km/h
Sat. 15, Aug.
sunnySunny
Temperature Icon22°/9°
Humidity Icon65%
Wind Icon14.8km/h
Sun. 16, Aug.
sunnySunny
Temperature Icon20°/12°
Humidity Icon77%
Wind Icon14km/h
Mon. 17, Aug.
patchy rain possiblePatchy rain nearby
Temperature Icon17°/13°
Humidity Icon92%
Wind Icon14.8km/h
Tue. 18, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon21°/14°
Humidity Icon85%
Wind Icon17.6km/h
Wed. 19, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon21°/15°
Humidity Icon85%
Wind Icon16.6km/h
Thu. 20, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon22°/15°
Humidity Icon83%
Wind Icon13.6km/h
Fri. 21, Aug.
heavy rain at timesHeavy Rain
Temperature Icon22°/15°
Humidity Icon80%
Wind Icon15.9km/h
Sat. 22, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon22°/15°
Humidity Icon82%
Wind Icon18.1km/h
Sun. 23, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon21°/15°
Humidity Icon82%
Wind Icon19.9km/h
Mon. 24, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon22°/14°
Humidity Icon81%
Wind Icon16km/h
Tue. 25, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon22°/15°
Humidity Icon81%
Wind Icon18.3km/h
Wed. 26, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon21°/15°
Humidity Icon84%
Wind Icon19.8km/h
Thu. 27, Aug.
heavy rain at timesHeavy Rain
Temperature Icon21°/14°
Humidity Icon80%
Wind Icon17.1km/h
Fri. 28, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon21°/13°
Humidity Icon77%
Wind Icon18.4km/h
Sat. 29, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon20°/13°
Humidity Icon80%
Wind Icon22.3km/h
Sun. 30, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon20°/14°
Humidity Icon82%
Wind Icon19.3km/h
Mon. 31, Aug.
moderate or heavy rain showerRain Showers
Temperature Icon21°/14°
Humidity Icon81%
Wind Icon19.4km/h
Tue. 1, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon21°/14°
Humidity Icon79%
Wind Icon15.9km/h
Wed. 2, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon20°/13°
Humidity Icon81%
Wind Icon19.5km/h
Thu. 3, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon20°/14°
Humidity Icon84%
Wind Icon19.7km/h
Fri. 4, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon20°/13°
Humidity Icon83%
Wind Icon19.6km/h
Sat. 5, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon20°/13°
Humidity Icon80%
Wind Icon20.3km/h
Sun. 6, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon20°/13°
Humidity Icon83%
Wind Icon20.3km/h
Mon. 7, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon19°/13°
Humidity Icon82%
Wind Icon19.9km/h
Tue. 8, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon19°/13°
Humidity Icon83%
Wind Icon18.5km/h
Wed. 9, Sep.
moderate or heavy rain showerRain Showers
Temperature Icon19°/12°
Humidity Icon79%
Wind Icon17.1km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 10, Aug.

27°C

Low will be onSat. 15, Aug.

9°C

HumidityHumidity

High will be onMon. 17, Aug.

92%

Low will be onSat. 15, Aug.

65%

Wind SpeedWind Speed

High will be onSat. 29, Aug.

22.3km/h

Low will be onThu. 20, Aug.

13.6km/h

PrecipitationPrecipitation

High will be onSat. 29, Aug.

11.06mm

Low will be onFri. 14, Aug.

0.05mm

Ultraviolet IndexUV

High will be onTue. 11, Aug.

6.2

Low will be onThu. 13, Aug.

4

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