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

Oshawa Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-5.106249999999999	-11.4		0.34375	-6.7
	-7.375	-9.2		-1.2749999999999997	-3.7
	-7.25	-8.5		-1.6062500000000002	-4.9
	-6.4624999999999995	-12		-0.7125000000000001	-4.6
	-6.0625	-9.4		-1.6812499999999995	0.4
	-6.737499999999999	-1.9		-1.7312500000000004	1.9
	-9.06875	-1.2		-2.5125000000000006	1.6
	-8.049999999999999	0.6		-2.3375	2.5
	-6.8500000000000005	1.4		-0.8312499999999998	5.3
	-6.5874999999999995	-1.6		-0.03750000000000016	1.1
	-5.04375	-3.5		0.40625	1.5
	-5.18125	-3.6		0.81875	0.6
	-7.937500000000001	-0.9		-1.5999999999999996	2.5
	-8.86875	-8.2		-2.75625	1.9
Jan.	-7.625000000000001	-14.4		-2.525	-8
	-8.049999999999999	-13.5		-0.8625	-1.1
	-8.15625	-4.6		-1.1375	1.1
	-6.5874999999999995	-8.9		-1.2000000000000002	-3.8
	-7.7375	-9.8		-1.35	-4.2
	-11.0375	-13.5		-4.4437500000000005	-8.8
	-10.625000000000002	-10.2		-4.79375	-0.6
	-9.681249999999999	-7.9		-2.99375	-2.5
	-8.475	-16.2		-2.5624999999999987	-6.8
	-8.918750000000001	-21.6		-2.525	-11.5
	-7.4125	-12.8		-0.9937499999999998	-10.5
	-6.7625	-14.2		-1.46875	-8.4
	-6.475	-12.4		-1.1312499999999999	-8.2
	-8.46875	-13		-2.1687499999999997	-9.4
	-10.100000000000001	-17.5		-3.1562499999999996	-10.3
	-11.325	-22.5		-3.2375000000000003	-12.1
	-9.15625	-16.2		-1.99375	-12.1
	-8.5375	-18.6		-1.5125000000000002	-4.1
	-8.618749999999999	-16.7		-2.3	-5.7
	-8.35625	-9.8		-1.5375000000000003	-4.2
	-8.299999999999999	-14.2		-1.0875	-6.1
	-8.587499999999999	-12.3		-2.25	-5.8
	-7.79375	-11.5		-2.225	-2.2
	-7.40625	-20.8		-1.1937500000000003	-10.7
	-9.531250000000002	-20.8		-2.4937500000000004	-10.5
	-8.456249999999999	-19.1		-2.2374999999999994	-7.1
	-7.78125	-7.3		-1.7624999999999997	-0.6
	-8.299999999999999	-4.5		-2.34375	-0.4
	-9.793750000000001	-10.2		-2.14375	-4.3
	-10.775	-12.2		-2.5875	-0.9
	-9.99375	-2.7		-2.4375	1.8
Feb.	-8.012500000000001	-2.2		-1.41875	-1.1
	-8.21875	-0.4		-2.0687499999999996	0.5
	-9.650000000000002	0.2		-2.8187500000000005	0.9
	-8.087499999999999	-2.8		-0.6375	-1.7
	-7.974999999999999	-3.5		-0.8374999999999999	0.2
	-7.80625	-0.5		-0.7125	1.3
	-6.15	-1.3		0.9375000000000002	0.8
	-5.2124999999999995	-4.5		0.4937500000000002	0.9
	-5.800000000000001	-7.5		1.075	0.3
	-5.9125	-16.3		0.34375	-5.3
	-6.70625	-4.2		-0.25	0.1
	-6.812500000000001	-8.4		-1.3687500000000001	-3.5
	-5.6	-4.8		1.1437499999999998	2.9
	-6.39375	-4.4		0.7124999999999999	2.3
	-6.90625	-10.1		0.75	-4.3
	-8.25	-13.2		-1.39375	-3.7
	-7.7375	-5.9		-1.4687499999999998	1.2
	-7.70625	-1.5		-0.7500000000000002	-0.8
	-6.843750000000001	-3		-0.5062499999999998	1.3
	-5.974999999999999	-1		0.6937499999999999	0.4
	-4.56875	2		1.46875	8.6
	-4.393750000000001	1.5		2.725	4.9
	-3.01875	1.5		3.937499999999999	9.6
	-0.9937499999999998	3		4.6312500000000005	7.9
	-1.8187500000000003	1.1		3.9875000000000007	8.3
	-4.1	-2.6		2.6562499999999996	4.5
	-4.3062499999999995	-3		2.36875	4.4
	-2.26875	-3.5		4.41875	1.2
Mar.	-2.3375000000000004	-3.4		4.90625	2.5
	-2.63125	-1.1		3.5000000000000004	4.8
	-2.16875	-10.8		4.575000000000001	-3.9
	-1.46875	-8.6		5.268750000000001	-0.4
	-2.00625	-0.6		4.824999999999999	2.5
	-1.5562500000000001	0		5.3812500000000005	4.9
	-1.125	-2.3		6.0874999999999995	1.2
	-3.5500000000000003	0.7		3.1562500000000004	3.6
	-3.400000000000001	-1.8		2.35	3.4
	-1.55625	-4.5		4.95625	2.6
	-1.98125	-0.9		4.062500000000001	4.5
	-1.8374999999999997	1.1		4.5062500000000005	9.6
	-2.6687499999999993	-2.9		4.31875	3.9
	-1.5187499999999998	-5.8		4.8812500000000005	0.3
	-1.08125	-0.5		5.693749999999999	6.3
	-0.8437499999999998	1.7		6.08125	8.3
	-0.13125000000000003	4.6		6.418750000000001	11.4
	-0.40625	1.1		6.1125	5.2
	-0.6062499999999998	-0.1		7.018749999999999	5.1
	0.39375000000000004	3.5		7.96875	20.6
	-0.24999999999999986	2		6.893749999999999	10.6
	0.28125	0.6		6.45	6.2
	0.5062500000000001	-0.1		7.25	4.7
	1.11875	-5.1		8.2875	-0.6
	0.5875	-6.9		7.7375	5.4
	1.0374999999999999	1.1		8.15	19.7
	1.7999999999999998	2.7		9.45	13
	2.4499999999999997	0.2		8.66875	9
	2.6999999999999997	0.4		10.481249999999998	9.9
	3.15625	5.9		10.981250000000001	22.2
	2.49375	7.5		10.368749999999999	23.2
Apr.	2.0375	6.7		9.181249999999999	16
	2.5375	9.2		9.61875	17.9
	2.0875	8.1		9.5	15.8
	2.16875	5.2		9.7125	21.2
	2.3	0.1		10.518749999999999	6.9
	2.2625	-0.8		9.7375	5.1
	2.6375	-0.7		9.95	12.8
	2.4125	3.7		9.9	19.9
	2.2687499999999994	4.9		10.46875	21
	2.68125	5		10.45625	11.2
	3.06875	5.2		9.93125	7.7
	2.9562500000000007	2		9.693750000000001	15.8
	3.21875	3.8		10.875	20.3
	3.51875	9.1		11.2625	12.9
	3.7875	6.6		11.012500000000003	13.2
	3.9187499999999997	3.3		11.325000000000001	11.6
	5.4437500000000005	1.3		12.775	10.1
	6.975	0.5		12.874999999999998	7.5
	6.574999999999999	-0.3		12.8125	16.5
	6.549999999999998	5.3		14.075000000000001	22.9
	6.425000000000001	7		13.93125	20.5
	6.018750000000001	3.3		13.487499999999999	10.4
	6.062500000000001	1.7		14.087500000000002	10.2
	6.037500000000001	2.3		13.90625	13.4
	6.387500000000001	3.3		14.025	15.9
	5.7625	3.6		13.95625	15.5
	5.449999999999998	4.2		13.125	12.3
	5.987500000000001	1.6		14.424999999999999	15.3
	6.9125000000000005	5.2		14.7125	15.3
	7.337500000000001	6.7		15.18125	10.1
May	7.593750000000001	5.6		15.6125	21.9
	7.53125	7		15.225	22.5
	7.15625	12.5		15.499999999999998	28.7
	7.918749999999999	13.8		15.956249999999999	29.5
	8.3125	16		16.59375	29.7
	9.025000000000002	7.4		17.575	12.1
	10.26875	5.7		18.049999999999997	16.2
	10.31875	5.4		16.493750000000002	20.5
	9.368749999999999	9.6		18.143749999999997	13.8
	9.88125	9		18.268749999999997	14.1
	10.587500000000002	12.4		19.250000000000004	21.1
	12.19375	10.8		20.668750000000003	28.7
	11.806249999999999	13.2		19.293749999999996	28.1
	11.831249999999999	10.7		18.94375	21
	12.268749999999999	10.3		19.612500000000004	27.5
	12.4	7.6		21.256250000000005	19.9
	12.125000000000002	10.1		19.94375	25.6
	11.40625	9.4		19.400000000000002	20.4
	10.5375	9.6		19.300000000000004	28.2
	11.36875	13.9		18.93125	28.8
	10.98125	11.9		18.6	30
	12.1625	12.6		19.68125	30.3
	12.293750000000001	16		19.36875	24.5
	12.018749999999999	15		20.4375	23.7
	12.3	13.2		19.581250000000004	27
	12.418750000000001	14		19.55625	28.7
	12.5375	19.8		19.8875	29
	13.156249999999998	17.9		20.700000000000003	33.4
	13.675	17.7		20.35625	29.9
	12.312500000000004	15.1		19.40625	30.2
	12.04375	14.4		19.325	21.4
Jun.	12.518749999999999	9.2		20.5	22.7
	13.250000000000002	9.6		21.349999999999998	25.6
	13.825000000000003	12.9		21.8	21.7
	14.725	14.9		22.581249999999997	23.4
	14.818750000000003	12.5		22.65625	24.5
	14.71875	11.8		23	25.7
	15.524999999999999	11.6		23.349999999999998	24.4
	15.681249999999999	13.1		22.91875	19.9
	15.606250000000001	10.8		23.05625	26.8
	16.006249999999998	13.8		23.468750000000004	24.4
	15.912500000000001	13.1		22.6	20.1
	15.337499999999999	16.1		22.181250000000002	25.1
	15.23125	14.1		22.262500000000003	28.5
	15.662500000000001	16.3		22.943749999999998	30.2
	15.187499999999998	17.3		22.668750000000003	31.7
	15.8875	18		23.34375	33.4
	16.275	21.3		23.743749999999995	36.1
	15.618750000000002	19.8		23.575000000000003	35.8
	15.7375	21.4		24.7375	34.3
	16.10625	21.2		24.856249999999996	28.8
	17.6	18.3		25.83125	26.1
	18.256249999999998	16.2		25.8625	28.3
	17.812500000000004	18.8		24.95625	29.8
	16.956249999999997	17.6		24.375000000000004	30.9
	17.006249999999998	18.9		23.756249999999998	30.1
	16.78125	18.9		25.068749999999998	28.5
	17.243750000000002	18		25.143749999999997	29.5
	17.4	15.8		25.05	29.1
	17.69375	16.5		25.25	29.9
	17.60625	20.2		25.475	40.5
Jul.	17.88125	21.4		25.525	29.5
	18.175	18.4		25.637499999999996	32.9
	18.0875	16.3		25.3625	28.1
	17.76875	18.6		25.531249999999996	28.5
	18.34375	13.9		26.05	25.1
	18.256249999999998	12.7		25.70625	27.1
	17.637500000000003	17.5		25.2375	24.1
	17.0125	14		24.55	24.1
	18.14375	12		25.468749999999996	26.3
	17.64375	13.3		25.325	27.5
	17.375000000000004	14.6		24.893749999999997	29.1
	17.225	16.7		25.056250000000002	29.4
	18.099999999999998	17.3		26.137500000000003	29.9
	17.999999999999996	18.6		24.843749999999996	28.4
	17.7	16.6		24.981250000000003	29
	17.28125	16.1		25.15625	29.2
	16.85	15.8		24.875	31.4
	17.51875	19.3		25.13125	31.6
	17.34375	19.8		25.943750000000005	22.5
	18.093750000000004	16.7		25.80625	26.2
	18.012500000000003	13.7		25.38125	26.7
	17.918749999999996	15.2		25.712500000000002	29.3
	17.575000000000003	18.5		24.712500000000002	30.6
	17.70625	20.5		24.543749999999996	28.4
	17.78125	20.1		24.499999999999996	29.5
	17.43125	15.9		25.049999999999997	29.6
	17.85	18.8		24.843749999999996	25.8
	17.88125	16.8		25.25625	28.5
	17.893749999999997		15.6	25.1125		29.3
	17.025		16.4	24.825		25.4
	17.056250000000002		15.6	24.275000000000002		24.4
Aug.	17.224999999999998		15.3	24.812499999999996		22.3
	17.206249999999997		18.9	25.006250000000005		25.3
	17.693749999999998		16.4	24.781250000000004		23.8
	16.981250000000003		14.9	24.4375		25.2
	16.9125		17.8	24.6875		25.4
	16.91875		16.9	24.58125		24.5
	17.262499999999996		17.4	23.968749999999996		24.3
	16.243750000000002		16.5	23.725		23.8
	16.131249999999998		16.5	23.725		24
	16.7625		17	24.156249999999996		24.3
	17.225000000000005		17.3	24.200000000000003		24.2
	17.025		16.6	24.175		23.7
	16.01875		16.1	23.325000000000003		23.2
	16.856250000000003		16.6	24.174999999999997		23.5
	16.53125		16	24.2375		24
	16.237499999999997		15.9	24.1		23.9
	15.5875		15.9	23.631250000000005		23.4
	16.03125		15.4	23.743749999999995		23.5
	16.89375		16.4	24.175		24
	16.75		16.6	24.224999999999994		24.3
	15.96875		16	23.6		23.3
	15.750000000000002		15.7	22.6875		22.9
	14.9625		15.2	22.41875		22.5
	15.837499999999997		15.5	22.462499999999995		22.1
	14.4		14.2	21.1875		21
	13.56875		13.8	20.86875		21.1
	14.34375		14.1	21.875000000000004		21.9
	14.875000000000002		14.7	22.5		22.2
	14.112500000000002			20.48125
	13.55			20.36875
	13.606250000000001			21.637499999999996
Sep.	13.068749999999998			19.993750000000002
	12.725000000000001			20.03125
	13.231249999999998			21.35625
	14.268749999999999			21.425
	13.08125			20.30625
	12.468750000000002			20.543749999999996
	14.012500000000003			21.75
	13.793749999999998			20.200000000000003
	12.737500000000002			20.2125
	13.1875			20.256250000000005
	13.53125			20.81875
	13.46875			20.512500000000003
	13.475000000000001			20.3125
	13.13125			19.69375
	12.33125			18.94375
	11.918750000000001			17.69375
	10.4375			17.5125
	10.69375			17.3125
	10.799999999999999			17.7
	10.56875			17.549999999999997
	10.85625			17.15625
	11.493749999999999			18.30625
	11.20625			17.731250000000003
	9.9875			16.293750000000003
	9.618749999999999			16.306250000000002
	9.5			16.43125
	9.206249999999999			16.60625
	8.9625			15.48125
	9.55625			15.35
	9.156249999999998			15.362499999999999
Oct.	8.31875			14.562500000000002
	6.9125			14.187499999999998
	6.812500000000001			12.08125
	6.49375			12.406250000000002
	7.325			14.737499999999997
	8.33125			13.875000000000002
	7.2625			12.887499999999996
	6.9750000000000005			13.01875
	6.7875000000000005			12.5125
	7.2125			13.225
	6.4937499999999995			12.068749999999998
	6.11875			10.731250000000001
	5.5562499999999995			11.200000000000001
	4.762499999999999			10.924999999999999
	4.3500000000000005			9.45625
	4.38125			9.55625
	5.0375			10.3
	4.5562499999999995			9.63125
	3.8374999999999995			9.83125
	4.0375000000000005			9.50625
	3.9187499999999997			9.575
	4.8062499999999995			10.475
	5.76875			11.325000000000001
	3.6500000000000004			10.1125
	2.8375			8.14375
	2.931250000000001			9.26875
	2.1999999999999997			8.21875
	2.9375			8.19375
	2.1875			8.662499999999998
	0.49375			6.656250000000001
	1.3562500000000002			5.875
Nov.	1.6375			6.8374999999999995
	1.4749999999999999			6.606249999999999
	0.75			6.61875
	0.49375			6.099999999999999
	0.6624999999999998			5.581250000000001
	-0.29374999999999984			5.4624999999999995
	-0.3437499999999999			5.4625
	-0.7999999999999999			5.2375
	-0.5375000000000001			4.687499999999999
	-0.16875000000000007			5.5562499999999995
	0.44375000000000003			5.40625
	0.5875000000000001			5.58125
	0.55625			4.5625
	-0.99375			3.0062500000000005
	-0.7749999999999999			3.6375
	-0.23125000000000004			4.7625
	-0.33125000000000004			4.4375
	-1.025			4.218750000000001
	-1.3562499999999997			3.8125000000000004
	-1.2			3.0624999999999996
	-0.6625			4.2375
	-2.11875			2.3375
	-4.05			0.07500000000000007
	-2.59375			1.625
	-1.75625			2.8124999999999996
	-2.7937500000000006			1.8562500000000002
	-2.8312500000000007			1.90625
	-3.05625			1.4625
	-3.3062499999999995			1.2875
	-3.6062500000000006			1.1312499999999999
Dec.	-3.1875			1.9749999999999999
	-3.3000000000000003			0.8062500000000001
	-3.88125			1.2125000000000001
	-4.325			1.025
	-4.9875			0.24375
	-4.862500000000001			0.33124999999999993
	-3.3937500000000007			0.95
	-3.0500000000000007			1.34375
	-4.175			1.7124999999999995
	-3.6812500000000004			0.8999999999999999
	-3.41875			1.25625
	-4.55			-0.15
	-4.5625			1.39375
	-3.5375000000000005			1.2937500000000002
	-4.343750000000001			0.85625
	-4.175			0.3812499999999998
	-3.6599999999999997			0.6866666666666669

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

41°C

Highest Temp

14 Jul. 26

-22°C

Lowest Temp

30 Jan. 26

Seasonal Breakdown

Hottest MonthJuly29.59°C

Coldest MonthJanuary-9.63°C

Wettest MonthMarch11.88mm

Windiest MonthJanuary30.82km/h

Oshawa 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 Oshawa historically?

July is historically Oshawa's hottest month, with average maximum temperatures around 25°C. During peak heatwave events, the highest recorded temperatures have reached 41°C on 2026-07-14.

2. What is the coldest month in Oshawa historically?

February is Oshawa's coldest month, with average minimum temperatures around -8°C. The all-time record low of -25°C was recorded on 2016-02-13.

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

Oshawa's average annual rainfall is approximately 1028.5mm, based on records spanning 17 years.

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

Oshawa historically records approximately 187.2 rainy days per year. October has the highest number of rain days at an average of 17 days.

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

The all-time highest temperature recorded in Oshawa is 41°C on 2026-07-14.

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

The all-time lowest temperature recorded in Oshawa is -25°C on 2016-02-13.

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

Oshawa experiences its strongest winds during February. The historic gust record of 54.7 kph was recorded on 2025-12-29.

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

Usually, Oshawa's humidity peaks in February at around 84.7% and drops to its lowest in April at approximately 75.7%.

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