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

Portland Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	0.5375	1.3		6.606249999999999	5.9
	0.5312500000000001	5.5		6.14375	11.6
	1.58125	6.8		7.218750000000002	10.8
	2.06875	6.2		7.38125	9.8
	3.06875	3.6		7.80625	6.4
	2.75625	4.1		8.1	5.3
	2.6625	3.9		7.33125	7.5
	2.6500000000000004	2.3		7.99375	5.5
	2.1	3.8		7.968750000000001	9
	2.10625	1.5		7.543750000000001	8.3
	2.70625	3.4		7.31875	8.5
	2.1875000000000004	7.6		8.1375	11.2
	1.725	2.5		6.8687499999999995	6
	1.13125	1.6		6.968749999999998	3.6
Jan.	1.2250000000000003	1.9		6.862500000000001	9.5
	1.46875	1.7		7.25	7.6
	2.2124999999999995	1.2		8.48125	9.6
	2.6375	0.9		8.881250000000001	10.4
	2.55625	1.2		8.3625	9.9
	1.6937499999999999	0.4		7.925	10.5
	2.1500000000000004	-0.7		8.568750000000001	6.9
	2.525	-1.7		9.0125	6.2
	2.7249999999999996	-1.1		8.76875	7.5
	2.5999999999999996	-2.3		8.825000000000001	8.5
	3.2687500000000003	-1.5		9.856250000000001	7.1
	2.6375	1.7		9.387499999999998	10.2
	2.7375	4.2		9.35625	9.5
	3.74375	8.4		10.187500000000002	12.1
	3.40625	8.6		9.381250000000001	10.9
	2.7	9.5		8.937500000000002	11.3
	3.3562499999999997	8.4		9.0625	13.1
	2.65	6.2		8.29375	9.5
	1.9124999999999996	9		8.8	11.7
	2.39375	3.9		8.4	14.6
	2.65625	6.6		8.90625	15.1
	3.23125	4.2		8.549999999999999	12.9
	2.96875	3.4		8.55625	13.1
	2.41875	6.9		8.5	10.5
	2.4437499999999996	9		8.41875	10.1
	2.5374999999999996	5.2		9.375	9.1
	1.88125	2.3		8.962500000000002	11.4
	2.4500000000000006	0.6		9.66875	9.5
	2.7687499999999994	2.3		9.418750000000003	5.2
	2.20625	3.7		8.65	5.9
	2.6249999999999996	4.6		8.518749999999999	7.2
Feb.	2.537500000000001	1.4		9.218750000000002	6.5
	3.218749999999999	1.3		8.9125	5.3
	3.09375	1.1		9.962499999999999	4.8
	2.3	1.7		8.61875	6.3
	2.375	2		8.881250000000001	5.5
	2.475	2.5		9.000000000000002	5.6
	1.79375	2.2		8.975	6.9
	1.3375	5.9		8.7375	11.8
	0.8875	4.6		8.34375	8.9
	1.4562499999999998	3.7		8.575	7.8
	0.9249999999999999	4.3		8.66875	8
	1.3250000000000002	3.7		8.450000000000001	9.7
	2.0249999999999995	0		9.11875	8.3
	3.15625	0.5		10.306249999999999	11.9
	3.04375	6		10.3	14.9
	2.9875	5.9		9.031250000000002	13
	2.625	8.8		9.562500000000002	10.3
	2.5562500000000004	8.1		10.300000000000002	10.6
	2.46875	4.4		10.7875	7.1
	2.38125	6.1		10.2875	7.9
	2.25	8.4		10.59375	11.7
	2.20625	4.9		10.493749999999997	10.2
	2.8437499999999996	2.2		12.04375	6
	2.6624999999999996	2.1		10.993749999999999	7.4
	3.5437499999999997	5.4		12.025	9.2
	4.1312500000000005	8.1		12.15625	9.9
	4.09375	2.7		11.71875	10.1
	4.2375	3.1		10.687500000000002	7.3
Mar.	3.6125	0.3		11.80625	8.1
	3.0437499999999997	8.6		11.643750000000002	17.7
	2.74375	11.4		12.112499999999999	15.7
	3.2249999999999996	9		12.925	16.5
	3.7000000000000006	11.4		13.318750000000001	14.7
	4.25	11.5		13.337499999999999	14.1
	4.51875	5.8		11.762500000000001	9.9
	3.96875	-0.2		11.531249999999998	10.9
	3.7687500000000003	3.6		12.35	9.5
	4.14375	7.9		12.806249999999997	11
	4.374999999999999	5.5		12.1625	8.2
	4.6499999999999995	0.8		12.849999999999998	12.9
	4.468749999999999	4.5		13.356250000000003	16.6
	5.374999999999999	6.5		12.175	12.7
	4.975000000000001	4.4		12.6875	8.1
	4.8999999999999995	0		13.2625	12.5
	4.518749999999999	4.5		14.26875	12.1
	4.418749999999999	4.4		13.149999999999999	11.5
	4.2125	4.4		12.35625	13.3
	4.137499999999999	3.1		13.612499999999999	17.5
	4.393750000000001	5.5		12.475000000000001	23.4
	4.6812499999999995	9.6		11.9125	27.5
	5.018750000000001	9.8		13.306249999999999	27.1
	4.925	7.8		13.73125	16.8
	4.81875	5.3		13.681249999999999	20.7
	5.199999999999999	6.5		14.9875	26.2
	5.63125	11.7		14.168749999999998	25.1
	4.606249999999999	10		13.29375	18.9
	4.2875	8.9		13.193750000000001	13.4
	4.23125	7.6		13.075	13.5
	4.175	6.3		14.599999999999998	10.3
Apr.	4.39375	3.6		14.825	8.8
	5.131249999999999	3.1		15.0375	12
	5.075	4.3		15.4625	15.7
	5.268750000000001	6.3		17.58125	22.1
	6.49375	9.5		15.931250000000002	26.5
	6.156249999999999	11.4		15.96875	26.3
	6.49375	10.4		15.95625	14.4
	5.64375	7.3		16.45	12.3
	5.968750000000001	6.6		16.650000000000002	13.3
	6.68125	5.2		16.7875	18.5
	6.9375	5.5		16.74375	20.3
	6.625	6.1		16.3125	22.7
	5.987500000000001	6.7		15.287500000000001	15.8
	6.2	9.2		15.26875	15
	6.6375	5.6		17.25	21.9
	6.6875	9.5		16.49375	28.3
	6.593749999999999	10.6		17.34375	25.2
	7.112499999999999	9.8		17.65	26.9
	7.65	12.6		18.40625	34.4
	7.7250000000000005	12.9		18.125	25.9
	7.1187499999999995	12.2		17.01875	23.4
	7.643749999999999	12.1		17.925	19.6
	7.124999999999999	9.6		18.518749999999997	23.2
	7.081249999999999	9.5		19.381249999999998	21
	8.0625	9.8		19.781249999999996	26.5
	8.206249999999999	12.1		20.706249999999997	20.7
	8.075000000000001	10.1		19.975000000000005	26.5
	8.225	13.1		20.4625	29.8
	8.637500000000001	10.7		21.706249999999997	17.3
	9.975	10.1		22.10625	18.2
May	9.793749999999998	7.6		19.7375	15.1
	9.781249999999998	7.4		19.3375	14.6
	9.2625	5.4		19.400000000000002	18.9
	8.837499999999999	8.3		18.9	20.5
	8.70625	9.1		18.74375	19.5
	8.2125	6.9		18.775	21
	8.1125	10.8		18.525	27.3
	8.85	12.4		18.40625	26.9
	8.95	11.5		17.624999999999996	22.4
	8.60625	9.2		17.818749999999998	27.4
	9.1625	10		18.906249999999996	19.1
	9.3125	9.7		19.700000000000006	20.4
	9.56875	10.5		20.1375	25.8
	10.11875	13.6		20.20625	29.5
	9.7375	9.2		20.275000000000002	16.3
	9.175	7		21.05	18.9
	9.75	7.9		21.481250000000003	21.2
	10.168750000000001	9.5		22.156250000000004	29.7
	10.875	13.9		22.63125	33.6
	10.3875	13.4		21.450000000000003	22.5
	9.937499999999998	11.6		22.156250000000004	24.6
	10.462500000000002	10.3		23.462500000000002	17
	11.056249999999999	9.7		23.9	16.3
	10.8625	7.9		23.243750000000002	22.3
	11.15	10.1		22.98125	14.8
	11.05	11.5		21.53125	16.8
	10.14375	9.8		20.1625	17.9
	10.318749999999998	9.1		22.081250000000004	25.6
	10.612499999999999	11.9		22.256249999999998	26.9
	10.149999999999999	13		19.66875	31.6
	9.625	15.7		19.83125	34.3
Jun.	9.1875	17.3		20.537499999999998	36.8
	10.09375	13.6		20.693749999999998	25.1
	10.406250000000002	11.7		22.00625	25
	11.018749999999999	12.7		21.224999999999998	30.6
	10.318750000000001	15.1		21.462500000000002	32.2
	10.775000000000002	13.3		22.637500000000003	25
	11.29375	11.3		24.24375	27.6
	12.09375	14.1		25.306250000000002	34.5
	12.193750000000001	17.5		25.356250000000003	37.1
	12.55	16.7		25.381249999999998	33.5
	12.599999999999998	13.7		24.962500000000002	24.8
	13.068750000000001	12.5		26.068749999999998	18.2
	14.018749999999999	12.3		26.65	16.5
	13.94375	11.9		26.037499999999998	17.9
	12.99375	11.3		26.2375	18.2
	13.649999999999999	11.2		27.806250000000002	17.8
	13.812499999999996	9.9		26.91875	20.2
	13.299999999999999	10.9		25.300000000000004	25.4
	13.212499999999999	14.4		25.45	28.3
	12.41875	13.6		26.29375	25.1
	12.9	12.1		27.518749999999997	28.9
	13.587499999999999	13.3		28.46875	31.9
	13.8375	13.5		27.706250000000004	29.4
	13.85	15.2		28.474999999999998	26.5
	14.481250000000001	11.8		27.975	29.4
	14.168750000000001	13.5		26.281250000000004	28.2
	13.606250000000001	14.6		27.56875	24.1
	14.331249999999997	12.1		27.399999999999995	25.4
	14.04375	12.3		27.518749999999997	30.6
	13.356250000000001	14.6		29.025	32.9
Jul.	14.15	15.3		29.331249999999997	32.6
	14.887500000000001	14.9		27.61875	25
	13.8875	13.1		27.025000000000006	27.6
	13.568749999999998	12.9		27.862499999999997	28.3
	13.825	14		28.025000000000002	30.6
	13.86875	15.7		27.34375	34.3
	13.81875	18.4		27.662499999999998	40.4
	14.193750000000001	21.3		28.168750000000003	40.3
	14.05625	17		27.325	27.8
	14.031249999999998	15.6		28.6125	31.6
	14.193750000000001	14.1		28.2	24.1
	14.40625	14.7		29.068749999999998	28.8
	14.306249999999999	13.6		29.01875	29.4
	14.5125	15.2		29.84375	24
	15.081249999999999	13.5		30.925	28.5
	16.00625	12.8		31.206250000000008	28
	15.93125	14.2		29.95625	32.2
	15.512500000000001	14.6		29.624999999999996	24.6
	15.51875	12.4		29.625000000000004	25.4
	15.506249999999998	11.9		29.39375	28.3
	15.424999999999997	14.2		29.925	34
	15.69375	15.6		30.087500000000002	34.3
	15.71875	15.5		29.231250000000003	34.9
	15.112499999999999	16.4		28.912499999999998	33.8
	14.799999999999997	15.5		27.70625	33.9
	15.09375	14.9		28.39375	30.9
	15.1875	13.8		28.88125	28.8
	15.975000000000001	14.3		30.075	30.7
	15.8125	16.9		30.25625	28.5
	15.612500000000002	15		30.431249999999995	29.5
	15.83125	16.7		29.8125	28.6
Aug.	16.20625	16.2		29.59375	29.2
	15.787500000000001	14.5		30.349999999999998	30.3
	16.193749999999998		6.6	29.918750000000003		24.6
	15.593750000000002		6.5	30.025000000000006		7.7
	15.437500000000002		7.2	29.15625		8.3
	14.699999999999998		8	28.725		9.5
	14.581249999999999		8	29.093749999999996		9.8
	15.037499999999998		6.6	27.612500000000004		8.4
	14.518749999999997		6.8	27.212500000000002		8.8
	14.0875		6.9	27.7125		8.8
	14.549999999999999		14.1	28.156249999999996		28.1
	14.843749999999998		14.7	28.69375		28.8
	15.293750000000001		14.9	28.943749999999994		28
	14.74375		14.1	28.14375		27.8
	14.562499999999998		14.3	26.76875		26.3
	13.987500000000002		13.5	25.518749999999997		24.9
	13.918750000000001		14	24.443750000000005		24
	13.568750000000003		13.4	26.293750000000003		25.7
	13.600000000000003		13.1	27.543749999999996		27.1
	14.375		14.3	26.943750000000005		26.7
	13.543750000000001		13.3	27.256249999999994		27.3
	14.38125		14.2	28.525		27.6
	14.281250000000002		14.2	27.725		26.8
	14.44375		14.2	27.462500000000006		27.2
	14.575000000000003		14	26.51875		25.4
	14.475		13.7	26.1125		25.6
	14.231250000000001		14.1	26.781249999999993		26.7
	14.018749999999999		13.2	27.26875		26.4
	13.343750000000002		13.4	25.525000000000002		25.9
	12.54375		12.4	25.299999999999997		25.3
	12.275		12.4	25.387499999999992		25.1
Sep.	12.2875		12.4	24.243750000000002		24
	12.987500000000002		12.6	24.037499999999998		23.9
	12.575000000000001			22.73125
	12.71875			21.78125
	12.28125			23.112500000000004
	12.406250000000002			22.8
	11.812500000000002			22.9875
	11.518749999999999			21.900000000000002
	11.75			21.45625
	11.968749999999998			22.54375
	12.018749999999999			22.60625
	12.112500000000002			21.675000000000004
	11.68125			22.400000000000002
	11.724999999999998			22.1625
	11.11875			20.7
	10.493749999999999			20.799999999999997
	10.143749999999999			20.78125
	9.95			20.34375
	9.73125			19.94375
	9.906249999999998			20.281250000000004
	9.568750000000001			20.324999999999996
	10.174999999999999			21.90625
	10.912500000000001			20.4625
	10.5125			20.25
	10.012500000000001			18.687500000000004
	9.4875			17.506249999999994
	8.6			17.262500000000003
	8.218749999999998			18.35625
	8.262500000000001			18.31875
	9.031250000000002			18.5125
Oct.	9.1125			19.0625
	9.406250000000002			18.724999999999998
	9.26875			17.34375
	9.012500000000001			18.300000000000004
	9.325			18.125000000000004
	9.5			17.556249999999995
	8.6875			16.743750000000002
	9.099999999999998			16.293750000000003
	7.975000000000001			15.5875
	7.893750000000001			14.88125
	6.743750000000001			13.26875
	6.650000000000001			13.768749999999997
	6.375			14.393750000000002
	7.587499999999999			13.943750000000003
	7.58125			14.54375
	7.4125			14.162499999999998
	7.39375			13.587499999999999
	7.206250000000001			12.868750000000002
	6.9937499999999995			13.506249999999998
	7.0562499999999995			13.412500000000001
	7.4937499999999995			13.662500000000001
	7.9750000000000005			13.637500000000003
	7.1812499999999995			12.69375
	6.106249999999999			12.000000000000002
	4.86875			12.3375
	4.750000000000001			11.35
	4.9625			11.51875
	5.043750000000001			12.0375
	5.65			11.21875
	5.95			10.956249999999999
	6.050000000000001			11.25625
Nov.	5.1187499999999995			10.89375
	4.28125			10.43125
	4.34375			10.375
	4.2250000000000005			9.825000000000001
	3.7			9.33125
	3.425			9.756250000000001
	3.5812500000000003			10.162500000000001
	3.7812499999999996			10.062499999999998
	3.3625			9.493749999999999
	2.8937500000000003			8.9375
	3.6187500000000004			9.58125
	4.7875000000000005			9.506249999999998
	4.550000000000001			10.03125
	2.99375			8.7
	1.80625			7.98125
	2.5687499999999996			7.5
	2.9687500000000004			8.825000000000001
	2.5062499999999996			8.23125
	2.2625			7.9125
	3.03125			8.28125
	2.6999999999999993			8.50625
	3.125			7.9
	3.2624999999999997			8.006250000000001
	3.0875			8.25
	3.1375			7.8374999999999995
	3.625			7.543749999999998
	3.6187500000000004			8.575
	3.43125			8.062499999999998
	2.5750000000000006			7.775000000000001
	2.28125			7.9437500000000005
Dec.	2.23125			6.75
	2.1			7.5625
	2.10625			7.90625
	3.1125000000000003			7.84375
	3.0312499999999996			7.5625
	3.3937500000000003			8.112499999999999
	3.05			8.081249999999997
	2.4875			7.16875
	2.26875			7.55625
	2.1250000000000004			6.70625
	1.8937499999999998			6.4750000000000005
	1.2875			6.13125
	2.4499999999999997			6.637499999999999
	3.13125			7.5375
	2.53125			7.206250000000001
	1.0125			7.2124999999999995
	0.6733333333333335			5.92

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

40°C

Highest Temp

21 Jul. 26

-2°C

Lowest Temp

24 Jan. 26

Seasonal Breakdown

Hottest MonthAugust30.36°C

Coldest MonthJanuary3.06°C

Wettest MonthFebruary9.39mm

Windiest MonthJune15.24km/h

Portland 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 Portland historically?

August is historically Portland's hottest month, with average maximum temperatures around 29°C. During peak heatwave events, the highest recorded temperatures have reached 47°C on 2021-06-28.

2. What is the coldest month in Portland historically?

January is Portland's coldest month, with average minimum temperatures around 2°C. The all-time record low of -13°C was recorded on 2024-01-15.

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

Portland's average annual rainfall is approximately 1330.4mm, based on records spanning 17 years.

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

Portland historically records approximately 179.5 rainy days per year. December has the highest number of rain days at an average of 21.6 days.

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

The all-time highest temperature recorded in Portland is 47°C on 2021-06-28.

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

The all-time lowest temperature recorded in Portland is -13°C on 2024-01-15.

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

Portland experiences its strongest winds during December. The historic gust record of 37.7 kph was recorded on 2024-01-10.

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

Usually, Portland's humidity peaks in December at around 84.1% and drops to its lowest in August at approximately 60.3%.

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Portland Historic Weather Records
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Portland Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

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