Ontario Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Ontario Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-7.2749999999999995	-0.2		-1.3	2.7
	-7.450000000000001	1.6		-0.9624999999999997	6.1
	-6.83125	0.5		0.48125000000000007	3.6
	-4.843749999999999	3.3		1.50625	8.4
	-4.4875	0.6		2.2624999999999997	4.8
	-4.26875	-2.6		1.86875	2.8
	-4.71875	1.4		2.26875	6.3
	-4.0125	-2.8		2.6	2.2
	-3.13125	-2.3		2.9625000000000004	3.3
	-3.68125	-4.2		2.61875	2.4
	-4.2375	-3		2.8812499999999996	-1.6
	-4.106249999999999	-4.9		2.75	-1.5
	-4.39375	-4		1.88125	4
	-5.63125	-4.2		2.0374999999999996	-0.2
Jan.	-5.68125	-4		1.3562499999999997	-2.2
	-4.8687499999999995	-2.8		0.9062500000000001	-0.9
	-4.8999999999999995	-2.8		2.1125	2.6
	-3.6499999999999995	-1.8		3.6875	0.3
	-2.875	-2.4		3.51875	-0.3
	-3.84375	-5.4		3.0500000000000007	1.2
	-3.7687499999999994	-6.7		3.3937499999999994	-2.6
	-4.1937500000000005	-7.2		2.9000000000000004	-3.1
	-3.56875	-5.2		3.70625	3.3
	-3.39375	-7.3		3.7125	1.7
	-2.86875	-9.6		4.21875	-4.1
	-3.45625	-5.9		3.8437499999999996	1.3
	-3.5625	-3		3.875	2.6
	-3.23125	-1.6		3.8000000000000003	2.5
	-3.325	-1.3		3.7750000000000004	4.6
	-3.6562499999999996	-2.3		4.40625	2.3
	-3.3249999999999997	-1.6		4.575000000000001	5.4
	-2.8875	-0.7		4.674999999999999	6.9
	-2.8187499999999996	-2.5		4.3687499999999995	4.8
	-2.525	-4.3		4.35	1.3
	-2	-3.6		5.7375	8.1
	-1.33125	-4		6.33125	10.6
	-2.0875	-2.5		6.38125	8.3
	-1.5624999999999998	-1.6		6.475	10.3
	-2.05	3		5.7749999999999995	8.7
	-1.80625	0.6		6.031250000000001	10.1
	-2.7874999999999996	-2.7		5.41875	7
	-2.96875	2.8		5.756249999999999	8.2
	-2.14375	-1.8		6.099999999999999	9.7
	-2.375	2.3		6.5	8.6
	-1.0624999999999998	2.2		6.650000000000001	10.6
Feb.	-1.175	3.1		7.299999999999998	12.3
	-1.36875	1.1		6.9625	13.2
	-1.7875000000000003	0.3		6.718750000000001	6
	-1.7562499999999999	-0.6		5.893749999999999	5.2
	-2.2687500000000003	-3.9		5.7437499999999995	5.9
	-2.15625	-3.2		5.899999999999999	7.8
	-2.5687499999999996	-3.4		6.143750000000002	7.2
	-2.4875	-1.2		5.925000000000002	14.7
	-2.7999999999999994	-0.8		5.86875	10
	-2.01875	5.2		7.1312500000000005	8
	-2.2437500000000004	1.7		7.312500000000001	8.6
	-2.55625	-5.6		6.925	10.6
	-1.53125	-3.4		7.318749999999998	12.6
	-1.24375	-3.1		8.037500000000001	10
	-0.4875000000000001	4.9		9.524999999999999	10
	-0.3125000000000001	4.8		9.643749999999999	16.3
	0.45624999999999993	-2.8		9.012500000000001	8.7
	0.15000000000000002	2.2		9.725	8.6
	-0.20625	-0.4		11.05625	9.6
	1.1375000000000002	-3.2		11.225000000000001	7.3
	0.20624999999999996	5.5		9.968750000000002	12
	0.024999999999999883	2.8		10.206250000000002	13.8
	0.26249999999999996	1.6		10.64375	7.3
	0.5000000000000001	-0.5		11.306249999999999	6.7
	1.125	-1.7		12.275000000000004	12.9
	1.4937500000000004	2.9		12.849999999999998	14.1
	2.45	6.5		13.187500000000002	15
	2.7687499999999994	1.4		12.41875	12.7
Mar.	3.1312499999999996	-3.1		12.393750000000002	7.2
	2.825	2.8		12.856250000000001	13.7
	2.1687499999999997	2.1		12.4875	17.1
	2.0812500000000003	3.7		12.906249999999998	22.3
	2.1	5.1		12.799999999999999	22.8
	2.08125	6.4		13.306249999999999	24.1
	3.1874999999999996	7		12.8625	16.9
	3.3312500000000003	-1.4		13.718750000000002	14.5
	2.63125	3.8		13.174999999999999	17.9
	3.0687500000000005	8.2		12.575000000000001	15.7
	2.6624999999999996	6.8		13.231250000000001	16.3
	3.0937500000000004	-0.2		13.262500000000001	11.5
	3.2499999999999996	-3.1		14.48125	15.8
	3.9625	0.9		14.143749999999999	19.6
	3.975	7		14.018749999999999	22.3
	3.56875	2.5		13.85	12.2
	4.175000000000001	0.2		14.937500000000002	11
	3.4750000000000005	6.4		14.950000000000001	15.2
	3.0749999999999997	2.4		13.399999999999999	10.9
	2.5437499999999997	0.5		14.431249999999997	15
	4.156249999999999	1.4		15.94375	19.7
	4.06875	3.1		13.88125	22.5
	3.7062500000000003	5.7		13.94375	24.6
	4.6875	6.7		15.587499999999999	26.4
	4.49375	5.5		15.337499999999999	23.5
	3.468750000000001	5.7		16.137500000000003	24.5
	4.64375	9.4		18.19375	23.2
	5.8062499999999995	9.3		16.64375	19.1
	4.96875	7.5		15.75	12.7
	4.14375	5.5		15.18125	13.2
	3.2	5.3		14.518749999999999	16.2
Apr.	3.787499999999999	3.1		15.825	13.3
	5.15	0.4		17.325	8.2
	4.76875	-0.8		16.1125	12.6
	4.531249999999999	1.2		17.531249999999996	18.2
	5.4	2.5		18.293750000000003	21.7
	5.8812500000000005	4.6		17.8	24.9
	6.562499999999999	6.3		18.9	26
	6.4875	7.3		18.71875	13.1
	6.143749999999999	4.3		18.9375	17.2
	7.312500000000001	3.7		18.28125	14.3
	6.6937500000000005	0.3		18.912499999999998	15.3
	6.9437500000000005	1.1		19.3375	16.4
	7.037500000000001	1.4		19.55	16.2
	6.68125	2.3		17.4625	19.7
	6.387500000000001	7.6		18.3	22.6
	6.656249999999999	5.7		19.325	23
	6.749999999999999	4.8		19.24375	25.3
	6.8812500000000005	6.3		21.025000000000002	27.9
	8.09375	7.9		21.51875	29.2
	8.662500000000001	11		21.5875	29
	9.468750000000002	15		21.16875	27.9
	8.75625	9		20.8	26.9
	8.33125	12.3		19.80625	27.8
	7.631249999999999	10		20.4875	28
	8.474999999999998	9.9		21.406249999999996	27.2
	8.325000000000001	8.4		21.66875	31.4
	9.674999999999999	14.4		23.08125	29.8
	9.98125	10.8		23.18125	33.8
	10.018749999999999	11.8		23.687500000000004	24.8
	11.081249999999999	7.1		23.981249999999996	26
May	11.274999999999999	8.5		24.00625	23.6
	11.387499999999998	8		22.675000000000008	17.5
	11.006250000000003	4.6		22.88125	17.1
	10.981250000000001	5.2		21.71875	22
	9.65	7.4		20.925	22.5
	9.49375	9.2		21.4	23.4
	10.087499999999999	10.5		21.73125	25.3
	10.187499999999998	9.8		21.23125	26.6
	9.406249999999998	8.5		21.706249999999994	30.5
	9.575	15.1		21.493750000000002	32.3
	10.056249999999999	12.3		23.000000000000004	33.3
	10.725	12.7		22.843749999999996	23.3
	10.906250000000002	12.3		23.25	31.6
	10.950000000000001	14.8		23.30625	33
	11.575000000000001	8.7		24.425	26.9
	12.087499999999999	12.4		25.318750000000005	25.7
	12.924999999999999	10.4		26.175	25
	13.075000000000001	11.9		25.43125	27.3
	13.30625	11.1		26.131250000000005	29.9
	13.975000000000001	10.3		27.47500000000001	31.2
	14.418750000000001	14		27.4625	28.9
	13.993749999999999	10.5		27.81875	32
	13.824999999999998	13		27.3375	27
	14.0875	8.9		27.318749999999998	22.9
	14.1375	8.2		26.84375	28.8
	14.268750000000002	11.1		27.15625	23.8
	13.76875	9.4		25.531250000000004	21.9
	13.856250000000001	5.7		26.16875	26.3
	13.60625	8.1		27.437500000000004	31.3
	14.237499999999997	14		27.2875	31.4
	13.375000000000002	14.2		26.19375	31.3
Jun.	13.387500000000001	16.2		26.012499999999996	34.4
	13.643749999999999	18		25.23125	37.7
	13.087499999999999	17.2		25.54375	32.9
	13.681249999999997	13.6		26.393749999999997	33
	13.36875	13.7		25.662500000000005	36.3
	13.012500000000001	19.8		25.58125	30.9
	13.425	14.5		27.256249999999998	32.8
	14.60625	16.7		29.26875	33.2
	15.725000000000001	15.9		30.55625	35.5
	16.493750000000006	20.7		30.25625	36.9
	16.425	19.3		29.706250000000004	34.8
	16.775	15.2		30.900000000000002	22.4
	17.3625	11.7		31.874999999999996	20.9
	17.95	9.3		32.1875	20.3
	17.4625	9.9		31.71875	24.1
	17.650000000000002	10.9		32.325	28.8
	18.549999999999997	15.3		34.05625	29.8
	19.10625	13.6		33	31.5
	18.762500000000003	16.4		32.5375	33.8
	19.00625	14.4		33.012499999999996	36.6
	18.2375	20.8		32.875	38.8
	18.375	22.7		34.00625	35.7
	19.35625	15		34.81875	36.9
	19.343749999999996	17.7		34.7625	38.4
	19.7625	18		34.543749999999996	35.9
	20.28125	15.8		34.831250000000004	38.4
	19.825	20.3		33.83125	39.9
	19.7	21.7		35.43124999999999	37.5
	19.793750000000003	21.1		34.931250000000006	35.2
	19.781250000000004	21.4		34.74999999999999	32.3
Jul.	20.35625	17.1		35.206250000000004	37.5
	20	17.4		35.206250000000004	39.2
	20.13125	22.6		35.318749999999994	38.5
	20.2625	20.2		35.18125	38.8
	19.91875	19.1		34.806250000000006	38.2
	20.050000000000004	21.7		35.28125000000001	39.7
	20.45625	22.7		35.52499999999999	38.1
	20.231250000000003	21.7		35.537499999999994	38.2
	20.45	17.5		36.06250000000001	39.1
	20.212500000000002	17.9		35.15625	40.2
	20.568749999999998	16		35.925	40.1
	20.625	18.6		35.36875	35.6
	20.493750000000002	19.1		35.3	36.3
	20.993750000000002	17.4		35.75	36.5
	21.10625	20.3		36.54375	37.3
	21.500000000000004	18.9		37.31250000000001	36.8
	21.88125	20		36.74999999999999	40.3
	21.587500000000002	18.8		36.1	39.2
	21.3125	16.2		35.87499999999999	31.8
	21.19375	14.9		36.02499999999999	30.6
	21	13		34.75	32.7
	20.150000000000002	12.2		34.82500000000001	36.2
	20.474999999999998	14.7		34.9375	38.7
	20.506249999999998	16.7		34.324999999999996	39.3
	19.59375	20.1		33.74375	39.1
	19.412499999999994	19		34.2375	36.9
	19.943749999999994	19.2		33.793749999999996	36.5
	19.474999999999998	18		34.21874999999999	36.9
	19.51875	20.1		34.5	35.3
	19.84375	21.1		34.64375	34.3
	19.443749999999998	18		34.56875	31.9
Aug.	19.35	17.9		34.4375	33.8
	20.062499999999996	18.1		35.19375	36.3
	20.081250000000004		16.7	34.96875000000001		35.7
	20.11875		21.3	35.01875		36.6
	19.88125		20.9	34.793749999999996		37.2
	19.93125		22.5	33.862500000000004		38.7
	19.33125		24.8	32.70625		39.4
	18.650000000000002		25.1	32.6375		35.4
	17.825		20.1	31.96875		33.4
	17.75625		21.5	33.09375		35.8
	17.875000000000004		17.8	31.631249999999998		32.2
	17.8		17.9	32.39375		33.1
	17.668750000000003		18.2	31.868750000000006		32.5
	17.625000000000004		17.4	32.71874999999999		32.6
	17.818749999999998		17.6	32.6375		32.7
	16.950000000000003		17.1	31.64375		31.1
	16.59375		16.5	30.518750000000004		31
	16.63125		16.6	31.20625		31.3
	16.8125		17	31.918750000000003		31.8
	16.6875		16.8	30.825000000000006		30.9
	16.531249999999996		16.6	31.26875		31.7
	16.0625		16.4	31.29375		31.7
	16.175		16.2	31.237499999999997		30.8
	16.293749999999996		16	32.03750000000001		31.3
	16.46875		16	29.731250000000006		29.1
	15.581249999999999		15.4	29.481249999999996		29.7
	14.856250000000001		14.9	29.35		29.3
	14.800000000000002		14.5	29.224999999999994		28.8
	14.956249999999999		14.9	28.35625		28.5
	15.125000000000002		15.2	28.218749999999996		28.9
	14.1625		14.8	28.025000000000002		28.5
Sep.	14.0625		14.6	28.443749999999998		28.4
	13.8		13.8	26.856250000000003		27.2
	13.162500000000001			27.44375
	13.53125			25.781249999999996
	12.793750000000003			24.975
	12.156250000000002			25.343750000000004
	12.181250000000002			24.724999999999998
	12.325000000000001			25.225
	11.69375			25.51875
	12.125000000000002			26.162499999999998
	12.274999999999999			25.94375
	12.324999999999998			25.806249999999995
	12.512500000000003			25.6125
	11.5875			24.51875
	11.893749999999997			23.793749999999996
	11.69375			23.525000000000002
	10.874999999999998			22.556250000000002
	10.51875			22.65625
	10.6375			22.85
	9.30625			20.750000000000004
	8.549999999999999			21.381249999999998
	8.743749999999999			21.20625
	9.068750000000001			22.206249999999994
	9.174999999999999			21.58125
	8.525			21.06875
	8.393749999999999			21.168749999999996
	8.618749999999999			18.074999999999996
	6.731249999999999			17.875
	6.9875			18.587500000000002
	7.3812500000000005			19.237499999999997
Oct.	7.8			19.36875
	7.606249999999999			20.08125
	7.48125			18.549999999999997
	6.850000000000001			18.325000000000003
	6.562500000000001			18.23125
	6.83125			18.668750000000003
	6.75625			17.9125
	7.1625000000000005			17.525000000000002
	6.512499999999999			15.662500000000001
	5.5625			14.762500000000003
	4.906249999999999			14.225
	4.081250000000001			13.162500000000001
	3.3375			13.362499999999999
	3.8375			13.843750000000004
	4.168749999999999			13.525
	3.0625			13.581249999999999
	3.918750000000001			14.493749999999997
	4.493750000000001			14.23125
	4.16875			12.81875
	3.8625000000000003			12.6375
	3.75625			11.825
	3.01875			12.424999999999999
	3.4625000000000004			13.1375
	2.2250000000000005			11.393749999999997
	1.4500000000000002			10.937499999999998
	1.1624999999999999			9.9625
	0.5375000000000001			9.375
	0.26249999999999996			9.09375
	0.3125			8.649999999999999
	1.2375			10.200000000000001
	0.7374999999999999			9.7125
Nov.	1.0187500000000003			9.843750000000002
	0.48125			8.381250000000001
	-0.012500000000000067			8.58125
	-0.025000000000000133			8.05625
	-0.07500000000000014			7.14375
	-0.8749999999999998			6.749999999999999
	-0.89375			6.5
	-0.09374999999999989			6.925
	-0.5124999999999998			7.625000000000001
	-1.25625			6.1312500000000005
	-1.41875			5.943749999999999
	-1.14375			6.656249999999999
	-0.7312500000000001			6.274999999999999
	-1.84375			5.2375
	-2.9687499999999996			4.2625
	-3.0875000000000004			3.5000000000000004
	-2.35625			3.7062500000000003
	-2.49375			4.456249999999999
	-2.75			3.6687499999999993
	-2.4125			4.49375
	-2.9125000000000005			3.7625000000000006
	-2.581250000000001			3.64375
	-2.6000000000000005			3.5812500000000003
	-2.4999999999999996			3.59375
	-3.2062500000000003			3.4499999999999997
	-3.1			3.1437500000000007
	-2.16875			3.2875
	-2.1375000000000006			4.6000000000000005
	-2.9312499999999995			4.093749999999999
	-3.7937499999999993			2.9437499999999996
Dec.	-3.4249999999999994			3.162499999999999
	-3.7			3.125
	-4.6375			1.6437499999999998
	-4.08125			2.4499999999999997
	-4.737499999999999			1.9499999999999997
	-3.8437499999999996			3.1437499999999994
	-2.73125			3.475
	-3.2875000000000005			3
	-3.74375			2.3375
	-3.937499999999999			1.6624999999999999
	-4.53125			2.18125
	-5.10625			0.8812499999999999
	-5.21875			1.14375
	-4.718750000000001			1.84375
	-4.800000000000001			1.1437499999999998
	-5.125000000000001			1.14375
	-7.126666666666668			-0.7266666666666667

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

40°C

Highest Temp

31 Jul. 26

-10°C

Lowest Temp

25 Jan. 26

Seasonal Breakdown

Hottest MonthJuly37.13°C

Coldest MonthJanuary-2.96°C

Wettest MonthApril2.34mm

Windiest MonthMay22.78km/h

Ontario Climate Change InsightsSee how climate patterns are evolving over time. Temperature shifts, rainfall trends, and extreme events—all in one place.

Weather City Ranking GloballyExplore Real time of the world’s hottest & Coldest Cities based on current temperature data.

Frequently Asked Questions

1. What is the hottest month in Ontario historically?

July is historically Ontario's hottest month, with average maximum temperatures around 35°C. During peak heatwave events, the highest recorded temperatures have reached 44°C on 2022-07-31.

2. What is the coldest month in Ontario historically?

January is Ontario's coldest month, with average minimum temperatures around -4°C. The all-time record low of -26°C was recorded on 2017-01-07.

3. What is the average annual rainfall in Ontario over the past 17 years?

Ontario's average annual rainfall is approximately 311.001mm, based on records spanning 17 years.

4. How many rainy days does Ontario experience on average per year?

Ontario historically records approximately 110 rainy days per year. December has the highest number of rain days at an average of 14.5 days.

5. What is the all-time highest temperature ever recorded in Ontario?

The all-time highest temperature recorded in Ontario is 44°C on 2022-07-31.

6. What is the all-time lowest temperature ever recorded in Ontario?

The all-time lowest temperature recorded in Ontario is -26°C on 2017-01-07.

7. What is the windiest time of year in Ontario historically?

Ontario experiences its strongest winds during July. The historic gust record of 57.6 kph was recorded on 2025-07-03.

8. What is the highest and lowest humidity in Ontario during a year?

Usually, Ontario's humidity peaks in January at around 82.6% and drops to its lowest in July at approximately 29.3%.

Recent Blogs On Weather

See all blogs

Ontario Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Ontario Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

Recent Blogs On Weather

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?

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Ontario Historic Weather RecordsAnalyse hottest, coldest, windiest & wettest days

Ontario Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

Recent Blogs On Weather

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?

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Ontario Historic Weather Records
Analyse hottest, coldest, windiest & wettest days