St Thomas, Ontario, Canada Climate Change Severity

High

The current climate change severity in St Thomas is High, with a 7.3% 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 Aug. (Historical Vs 2026) - Weather Data Only

Low

020

Moderate

2040

High

4060

Very High

6080

Extreme

80100

°C

St Thomas Climate Change Analysis

Real-time Weather

All Years

Temperature (°C)

Years

Years	Min Temp.	Avg Temp.	Max Temp.
	-7.925806451612906	-5.161290322580644	-2.5903225806451617
	-9.299999999999999	-5.378571428571427	-1.907142857142857
	-1.1967741935483873	2.903225806451613	7.2387096774193544
	4.773333333333334	9.726666666666667	14.699999999999998
	10.251612903225805	14.745161290322578	19.212903225806453
2010	14.156666666666666	18.84333333333333	23.35666666666667
	17.02258064516129	22.209677419354843	26.903225806451616
	16.758064516129032	21.419354838709676	26.183870967741935
	11.570000000000004	15.926666666666668	20.133333333333326
	6.064516129032258	9.783870967741937	13.845161290322583
	0.31333333333333335	3.683333333333333	7.766666666666667
	-7.141935483870966	-4.816129032258065	-2.793548387096775
	-12.583870967741936	-8.306451612903226	-4.774193548387096
	-10.907142857142858	-6.307142857142858	-2.717857142857141
	-6.141935483870969	-1.864516129032258	2.1870967741935483
	1.6933333333333336	6.02	10.659999999999998
	9.348387096774195	13.793548387096774	18.190322580645166
2011	13.04	18.15	22.566666666666666
	17.44193548387097	22.764516129032256	27.23870967741936
	15.754838709677422	20.129032258064516	24.26129032258064
	12.323333333333332	16.256666666666668	19.949999999999996
	6.783870967741935	10.064516129032256	13.674193548387098
	2.866666666666667	6.06	9.053333333333335
	-2.2225806451612904	0.22258064516129042	2.5774193548387094
	-6.280645161290323	-2.719354838709678	0.03548387096774195
	-4.458620689655173	-1.613793103448276	1.1620689655172411
	2.4903225806451608	6.751612903225805	11.203225806451613
	2.07	6.6800000000000015	11.496666666666668
	10.451612903225806	16.135483870967743	21.41935483870967
2012	14.236666666666661	19.39333333333333	23.813333333333333
	17.73548387096774	22.74838709677419	27.212903225806453
	15.090322580645163	19.88387096774193	24.11935483870968
	10.76	15.546666666666663	20.23
	6.345161290322581	9.716129032258065	13.316129032258063
	-0.2566666666666667	2.5433333333333317	5.746666666666667
	-1.6677419354838707	0.851612903225807	3.2419354838709684
	-6.322580645161291	-3.148387096774193	-0.29354838709677405
	-10.082142857142856	-5.889285714285714	-2.160714285714286
	-4.77741935483871	-1.5451612903225802	1.7193548387096775
	0.8099999999999999	5.473333333333334	9.953333333333335
	8.983870967741936	14.35806451612903	19.538709677419355
2013	13.289999999999997	17.973333333333333	22.349999999999998
	16.354838709677423	20.93870967741936	25.06129032258064
	14.69032258064516	19.483870967741932	24.07741935483871
	11.096666666666666	15.823333333333332	20.61
	7.0290322580645155	10.81612903225806	14.574193548387097
	-1.14	1.886666666666667	4.63
	-6.8032258064516125	-3.838709677419356	-1.5741935483870966
	-13.187096774193549	-9.27741935483871	-5.73225806451613
	-13.746428571428568	-9.671428571428569	-5.9
	-10.058064516129033	-5.019354838709676	-0.8193548387096776
	0.6933333333333332	5.823333333333333	11.09
	8.209677419354838	13.396774193548385	18.264516129032263
2014	13.463333333333336	18.786666666666665	23.740000000000006
	13.858064516129033	18.735483870967748	22.99677419354839
	14.354838709677422	19.08709677419355	23.774193548387096
	11.173333333333337	15.77	20.430000000000003
	6.416129032258064	9.870967741935484	13.406451612903224
	-2.006666666666667	1.22	4.076666666666666
	-2.2258064516129026	-0.22580645161290336	1.7483870967741937
	-12.722580645161292	-8.296774193548385	-4.548387096774195
	-17.764285714285712	-13.107142857142852	-8.674999999999999
	-7.119354838709679	-2.74516129032258	1.1580645161290324
	1.7533333333333334	6.303333333333334	11.28666666666667
	9.964516129032258	15.606451612903223	21.687096774193545
2015	12.550000000000002	17.733333333333338	22.59666666666666
	14.69677419354839	20.46129032258065	26.177419354838705
	14.71290322580645	19.632258064516126	24.858064516129026
	14.213333333333333	18.536666666666665	23.77333333333333
	6.364516129032259	10.083870967741936	14.009677419354842
	3.1666666666666656	6.639999999999999	10.170000000000003
	1.2096774193548387	4.009677419354839	6.983870967741937
	-7.429032258064517	-4.2935483870967746	-1.5225806451612904
	-6.69655172413793	-2.7068965517241375	0.6482758620689653
	-0.6419354838709675	3.193548387096774	7.161290322580646
	0.20999999999999946	4.863333333333332	9.503333333333332
	8.638709677419353	13.806451612903226	18.903225806451612
2016	13.146666666666665	19.00333333333333	24.156666666666663
	16.970967741935482	22.222580645161294	26.993548387096773
	17.335483870967746	22.5	27.94838709677419
	13.573333333333336	18.566666666666666	24.273333333333337
	7.616129032258064	11.477419354838712	15.54838709677419
	2.8233333333333337	6.3433333333333355	10.026666666666666
	-5.680645161290322	-2.7774193548387096	-0.3129032258064515
	-4.880645161290322	-2.222580645161291	0.5838709677419353
	-4.328571428571428	-0.19642857142857148	3.9285714285714284
	-3.5677419354838706	0.022580645161290172	3.5741935483870964
	4.723333333333334	9.496666666666668	14.213333333333335
	7.770967741935485	11.990322580645165	15.961290322580643
2017	13.733333333333338	18.636666666666667	23.496666666666663
	15.670967741935483	20.519354838709674	25.083870967741937
	14.219354838709673	18.82580645161291	22.938709677419357
	12.759999999999998	17.290000000000003	22.66
	8.890322580645158	12.70967741935484	16.69677419354839
	-0.1833333333333332	3.3800000000000003	6.383333333333334
	-8.029032258064516	-4.987096774193549	-2.206451612903226
	-10.01290322580645	-5.858064516129032	-2.435483870967742
	-6.632142857142858	-2.5857142857142854	1.2178571428571427
	-4.154838709677419	-1.0387096774193547	2.4548387096774196
	-1.2399999999999998	2.9833333333333334	7.56
	10.90967741935484	16.60322580645161	22.3
2018	14.12	18.826666666666668	23.426666666666666
	16.53548387096774	21.51290322580645	25.951612903225808
	17.480645161290322	21.60322580645161	25.516129032258068
	14.086666666666666	18.089999999999996	22.219999999999995
	5.3741935483870975	9.325806451612904	12.951612903225806
	-1.7299999999999995	0.8899999999999999	3.0433333333333326
	-2.374193548387097	-0.19032258064516147	2.22258064516129
	-9.935483870967742	-6.325806451612903	-2.3645161290322583
	-8.310714285714287	-4.060714285714285	0.1392857142857141
	-5.138709677419356	-1.2096774193548383	2.790322580645162
	2.0033333333333334	6.403333333333332	10.403333333333332
	7.203225806451614	12.403225806451612	17.4741935483871
2019	12.596666666666664	17.546666666666667	22.023333333333333
	17.183870967741935	21.861290322580647	26.390322580645154
	15.264516129032256	19.81290322580646	24.161290322580644
	12.900000000000002	17.45333333333333	21.649999999999995
	6.783870967741935	10.825806451612896	14.874193548387096
	-2.5766666666666667	0.3866666666666667	3.466666666666667
	-3.1838709677419357	-0.45161290322580655	2.3806451612903228
	-4.629032258064516	-1.8612903225806454	1.0516129032258068
	-6.517241379310345	-3.296551724137931	-0.17931034482758615
	-1.1612903225806452	3.016129032258064	7.441935483870967
	1.0133333333333332	5.313333333333333	9.696666666666669
	7.116129032258065	11.570967741935483	15.980645161290322
2020	13.609999999999996	19.013333333333332	24.086666666666662
	17.91290322580645	22.58387096774194	27.225806451612897
	15.929032258064517	20.37419354838709	24.822580645161292
	11.476666666666667	15.97666666666667	20.473333333333333
	5.138709677419356	8.964516129032257	12.590322580645163
	2.983333333333334	6.103333333333334	9.253333333333334
	-3.261290322580646	-0.7806451612903224	1.4838709677419353
	-5.174193548387097	-3.0870967741935487	-0.8612903225806451
	-10.749999999999996	-6.9071428571428575	-3.1821428571428574
	-1.9967741935483885	2.867741935483871	7.770967741935484
	3.309999999999999	7.510000000000001	11.87
	7.777419354838709	12.703225806451611	17.593548387096778
2021	15.706666666666672	19.953333333333333	24.41666666666667
	16.032258064516128	20.154838709677417	24.490322580645163
	17.858064516129033	22.29032258064516	27.32258064516129
	12.859999999999998	17.446666666666665	22.639999999999993
	10.658064516129029	13.654838709677415	17.39032258064516
	0.23666666666666644	3.423333333333333	7.14
	-1.964516129032258	1.232258064516129	4.403225806451613
	-12.941935483870967	-7.8999999999999995	-3.8870967741935485
	-10.482142857142858	-5.564285714285715	-1.3464285714285715
	-2.870967741935485	1.0903225806451613	5.409677419354837
	1.336666666666667	5.98	10.876666666666669
	9.841935483870966	14.845161290322578	20.129032258064512
2022	12.340000000000003	18.25333333333333	23.87666666666667
	15.932258064516128	21.26451612903226	26.89032258064516
	15.854838709677422	20.89032258064516	26.400000000000002
	12.65333333333333	17.173333333333336	22.526666666666664
	5.858064516129031	10.119354838709677	15.209677419354836
	1.3000000000000003	4.656666666666666	8.46
	-3.380645161290322	-0.7838709677419357	2.116129032258064
	-3.148387096774193	-0.6870967741935483	2.132258064516129
	-5.389285714285714	-1.6285714285714286	2.7678571428571423
	-3.6290322580645173	0.032258064516128934	4.109677419354838
	3.156666666666667	8.373333333333337	13.899999999999997
	7.558064516129033	13.506451612903223	19.55483870967742
2023	13.106666666666664	18.250000000000004	23.479999999999997
	16.003225806451614	20.874193548387094	26.145161290322577
	14.064516129032262	19.05806451612904	24.61935483870968
	12.46	17.426666666666666	23.766666666666666
	7.503225806451612	11.283870967741938	15.609677419354835
	-0.1466666666666665	3.4933333333333327	7.37
	0.6612903225806451	2.6516129032258062	5.0935483870967735
	-5.2193548387096795	-2.993548387096774	-0.5032258064516131
	-2.8448275862068964	0.4724137931034481	4.2413793103448265
	-0.13870967741935503	3.5419354838709687	7.509677419354839
	4.59	8.556666666666668	13.023333333333335
	10.693548387096776	15.32258064516129	20.429032258064517
2024	14.18	18.68666666666667	23.553333333333335
	15.941935483870967	20.44516129032258	25.20645161290323
	15.138709677419351	19.858064516129033	25.25483870967742
	13.609999999999996	18.249999999999996	23.593333333333323
	6.458064516129032	11.083870967741936	16.170967741935485
	3.19	5.986666666666667	8.9
	-3.367741935483871	-1.332258064516129	0.7580645161290321
	-8.877419354838711	-6.006451612903225	-3.670967741935484
	-8.732142857142858	-5.557142857142857	-2.5749999999999997
	-2.0451612903225804	2.3774193548387093	7.567741935483871
	2.023333333333333	6.8966666666666665	12.666666666666666
	7.941935483870969	12.070967741935483	16.616129032258065
2025	14.763333333333334	19.57666666666667	24.860000000000003
	16.700000000000003	22.00322580645161	27.29032258064516
	14.36451612903226	19.670967741935485	25.203225806451623
	11.976666666666665	17.116666666666667	23.153333333333332
	6.523333333333334	10.969999999999999	15.833333333333336
	0.48666666666666725	2.8933333333333326	5.450000000000001
	-5.916129032258064	-3.4225806451612897	-0.925806451612903
	-10.296774193548389	-7.232258064516129	-4.787096774193548
	-8.392857142857146	-5.260714285714287	-2.5785714285714287
	-1.7806451612903222	1.6741935483870964	5.5451612903225795
	4.3	9.133333333333335	14.440000000000001
2026	6.964516129032259	12.60967741935484	18.44193548387097
	13.823333333333336	19.733333333333338	25.653333333333343
	17.487096774193553	23.12903225806452	28.845161290322576
	16.55483870967742	21.045161290322586	26.02258064516129

Max Temp.

Avg Temp.

Min Temp.

St Thomas Weather Condition Changes (Historic Vs 2026)

2026

Historic

2026

Over the past 16 year(s), St Thomas temperature has changed by around +3.7%, and has experienced notable climate changes.

Sunny

Cloudy

Rainy

Snowy

Misty

Data: Jan. to Aug. (Historical Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

Sunny

3093

210%

Cloudy

4913

-73.4%

Rainy

10662

-41.5%

Snowy

1014

40%

Misty

400%

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

Climate Change Indicators:

Over the past 16 years, St Thomas 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

2040

High

4060

Very High

6080

Extreme

80100

From 2010 to 2026, St Thomas experienced significant changes:

Temperature change of

+0.34 °C

Variation in annual rainfall

+31.07 %

Change in average humidity

-3.19 %

PM2.5 levels surged by

+21.38 %

Heatwave changed by

+1 Days

Coldwave changed by

-1 Day

Wind speeds changed by

+4.42 km/h

These indicators show that St Thomas 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 Aug.

St Thomas Weather Forecast 30 Days (September - October 2026)
St Thomas, Ontario, Canada

Condition

Temperature

Humi.

Wind Speed

Mon. 28, Sep.

Sunny

17°/12°

75%

18.7km/h

Tue. 29, Sep.

Overcast

19°/16°

74%

19.8km/h

Wed. 30, Sep.

Overcast

21°/17°

82%

20.9km/h

Thu. 1, Oct.

Overcast

25°/19°

76%

36km/h

Fri. 2, Oct.

Sunny

18°/11°

67%

33.1km/h

Sat. 3, Oct.

Sunny

14°/9°

62%

22km/h

Sun. 4, Oct.

Overcast

15°/12°

81%

32km/h

Mon. 5, Oct.

Rain Shower

13°/9°

78%

42.5km/h

Tue. 6, Oct.

Rain Showers

19°/11°

80%

20.5km/h

Wed. 7, Oct.

Rain Showers

17°/10°

78%

23.8km/h

Thu. 8, Oct.

Rain Showers

17°/8°

76%

21.6km/h

Fri. 9, Oct.

Rain Showers

17°/8°

76%

19.4km/h

Sat. 10, Oct.

Rain

17°/7°

74%

18.6km/h

Sun. 11, Oct.

Rain Showers

17°/8°

74%

22.4km/h

Mon. 12, Oct.

Rain Showers

16°/8°

76%

22.3km/h

Tue. 13, Oct.

Rain Showers

15°/8°

80%

20.8km/h

Wed. 14, Oct.

Rain Showers

14°/7°

79%

21.9km/h

Thu. 15, Oct.

Rain Showers

14°/6°

78%

26.1km/h

Fri. 16, Oct.

Rain Showers

13°/6°

77%

21.8km/h

Sat. 17, Oct.

Heavy Rain

12°/5°

76%

22.2km/h

Sun. 18, Oct.

Rain Showers

13°/5°

75%

22.2km/h

Mon. 19, Oct.

Rain Showers

14°/5°

78%

23.6km/h

Tue. 20, Oct.

Rain Showers

14°/7°

78%

21.7km/h

Wed. 21, Oct.

Rain Showers

14°/7°

79%

23.6km/h

Thu. 22, Oct.

Heavy Rain

13°/6°

77%

22.1km/h

Fri. 23, Oct.

Rain Showers

14°/6°

80%

23.2km/h

Sat. 24, Oct.

Rain Showers

13°/6°

78%

22.2km/h

Sun. 25, Oct.

Rain Showers

13°/6°

79%

20.4km/h

Mon. 26, Oct.

Rain Showers

11°/5°

80%

23.3km/h

Tue. 27, Oct.

Rain Showers

11°/4°

80%

22.4km/h

Wed. 28, Oct.

Rain Showers

12°/4°

79%

21.8km/h

Highest & Lowest Weather Forecasts

Temperature

High will be onThu. 1, Oct.

25°C

Low will be onTue. 27, Oct.

4°C

Humidity

High will be onWed. 30, Sep.

82%

Low will be onSat. 3, Oct.

62%

Wind Speed

High will be onMon. 5, Oct.

42.5km/h

Low will be onSat. 10, Oct.

18.6km/h

Precipitation

High will be onSun. 4, Oct.

31.4mm

Low will be onSat. 10, Oct.

0.6mm

High will be onMon. 28, Sep.

5.2

Low will be onFri. 16, Oct.

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St Thomas Weather Condition Changes (Historic Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

Climate Change Indicators:

Severity Score

From 2010 to 2026, St Thomas experienced significant changes:

St Thomas Weather Forecast 30 Days (September - October 2026)
St Thomas, Ontario, Canada

Highest & Lowest Weather Forecasts

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St Thomas Weather Condition Changes (Historic Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

Climate Change Indicators:

Severity Score

From 2010 to 2026, St Thomas experienced significant changes:

St Thomas Weather Forecast 30 Days (September - October 2026)St Thomas, Ontario, Canada

Highest & Lowest Weather Forecasts

Our Blogs

Mumbai's Monsoon Grip: Rain, Wind, and UV Swings Tracked

New Delhi's August Heat Surge, Dust Storms, and September Reset

Gurgaon's August Heat Surge, Sandstorms, and September Cool-Off

Amritsar August Heat Surge: Rain Fades, Haze Holds Firm

The Night a Wall of Dust Swallowed Phoenix: What 1,520 Air Quality Readings Reveal About Arizona's Air

New Delhi's Brutal June-July Swing: From 45°C to Monsoon Lows

London's July 2026 Heatwave: From 20°C to 34°C in Weeks

World Top 10 Hottest Cities Are All in India Again - May 2026

Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

World Top Hottest Cities Belong to India - April 2026

Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

Why AQI Standards Vary Across the World - And Why Air Quality Index Matters More Than Ever

Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

St Thomas Weather Forecast 30 Days (September - October 2026)
St Thomas, Ontario, Canada