Portland Weather in 2018

Historical record of Portland, Maine weather for the year 2018 based on NOAA data.

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2018 Portland Weather Extremes
Highest temperature	93 °F	August 28
Lowest temperature	-17 °F	January 1
Highest daily low	71 °F	August 29
Lowest daily high	4 °F	January 6
Most daily precipitation	2.4 inches	April 16
Most daily snow	11.9 inches	January 4
Total annual precipitation	52.8 inches	-
Total annual snow	91.8 inches	-

What was the hottest temperature in Portland in 2018?

The highest temperature recorded in Portland, Maine in 2018 was 93 °F which happened 4 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Portland in 2018

Rank	Temperature	Date
1	93 °F	Aug 28
1	93 °F	Aug 7
1	93 °F	Aug 6
1	93 °F	Jul 4
5	92 °F	Sep 6
6	91 °F	Jun 18
7	90 °F	Sep 3
7	90 °F	Aug 2
7	90 °F	May 2
10	89 °F	Aug 29
10	89 °F	Jul 10
10	89 °F	Jul 5

What was the coldest temperature in Portland in 2018?

The lowest temperature recorded in Portland, Maine in 2018 was -17 °F which happened on Jan 1.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Portland in 2018

Rank	Temperature	Date
1	-17 °F	January 1
2	-16 °F	January 2
3	-12 °F	January 7
4	-5 °F	January 6
5	0 °F	January 5
6	2 °F	February 3
7	3 °F	February 2
7	3 °F	January 15
9	4 °F	November 23
9	4 °F	January 4

January 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	10	-17	0.00	0.0
January 2	12	-16	0.00	0.0
January 3	26	7	0.00	0.0
January 4	30	4	0.62	11.9
January 5	24	0	0.01	0.1
January 6	4	-5	0.00	0.0
January 7	14	-12	0.00	0.0
January 8	30	11	0.02	0.1
January 9	39	20	0.00	0.0
January 10	34	10	0.00	0.0
January 11	47	32	0.00	0.0
January 12	49	39	0.59	0.0
January 13	50	16	0.73	0.0
January 14	20	9	0.00	0.0
January 15	17	3	0.01	0.3
January 16	27	14	0.03	0.5
January 17	29	25	0.41	5.5
January 18	30	13	0.00	0.0
January 19	32	11	0.00	0.0
January 20	47	29	0.00	0.0
January 21	43	28	0.00	0.0
January 22	35	21	0.11	0.4
January 23	37	22	0.76	0.0
January 24	38	18	0.00	0.0
January 25	24	12	0.00	0.0
January 26	31	8	0.00	0.0
January 27	47	13	0.00	0.0
January 28	48	31	0.00	0.0
January 29	35	23	0.00	0.0
January 30	23	18	0.00	0.0
January 31	31	10	0.00	0.0

February 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	38	26	0.13	1.3
February 2	38	3	0.16	0.6
February 3	23	2	0.00	0.0
February 4	42	21	0.63	0.0
February 5	43	19	0.34	0.0
February 6	31	17	0.00	0.0
February 7	26	16	0.96	6.6
February 8	28	13	0.00	0.0
February 9	28	8	0.00	0.1
February 10	41	24	0.24	0.3
February 11	38	33	0.52	0.0
February 12	38	24	0.00	0.0
February 13	29	17	0.00	0.0
February 14	45	27	0.00	0.0
February 15	44	25	0.00	0.0
February 16	46	27	0.10	0.0
February 17	35	20	0.14	1.3
February 18	40	21	0.39	6.0
February 19	42	16	0.01	0.0
February 20	44	37	0.01	0.0
February 21	68	35	0.00	0.0
February 22	45	28	0.00	0.0
February 23	36	24	0.23	0.1
February 24	52	31	0.00	0.0
February 25	38	30	0.48	1.6
February 26	50	30	0.00	0.0
February 27	48	25	0.00	0.0
February 28	58	34	0.00	0.0

March 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	52	34	0.00	0.0
March 2	40	32	0.10	0.0
March 3	44	35	0.00	0.0
March 4	42	32	0.01	0.3
March 5	43	31	0.06	1.3
March 6	39	31	0.00	0.0
March 7	33	31	0.39	5.1
March 8	33	29	0.99	10.6
March 9	35	20	0.00	0.0
March 10	39	22	0.00	0.0
March 11	41	29	0.00	0.0
March 12	37	23	0.00	0.0
March 13	36	28	1.03	11.5
March 14	38	32	0.25	2.8
March 15	40	32	0.00	0.0
March 16	36	24	0.00	0.0
March 17	30	14	0.00	0.0
March 18	28	8	0.00	0.0
March 19	33	10	0.00	0.0
March 20	39	18	0.00	0.0
March 21	39	26	0.00	0.0
March 22	43	30	0.05	1.3
March 23	46	27	0.00	0.0
March 24	45	33	0.05	0.1
March 25	39	27	0.00	0.0
March 26	41	24	0.00	0.0
March 27	47	21	0.00	0.0
March 28	48	32	0.01	0.0
March 29	50	29	0.20	0.0
March 30	58	41	0.06	0.0
March 31	52	35	0.00	0.0

April 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	57	31	0.00	0.0
April 2	38	27	0.09	0.1
April 3	45	28	0.17	0.0
April 4	44	37	0.66	0.0
April 5	40	26	0.00	0.0
April 6	40	23	0.14	0.5
April 7	46	30	0.06	0.0
April 8	44	26	0.00	0.0
April 9	43	26	0.00	0.0
April 10	40	27	0.00	0.0
April 11	45	25	0.00	0.0
April 12	50	28	0.18	0.0
April 13	62	42	0.05	0.0
April 14	48	32	0.00	0.0
April 15	33	27	0.10	0.1
April 16	47	33	2.40	0.0
April 17	47	37	0.00	0.0
April 18	53	34	0.00	0.0
April 19	48	38	0.02	0.0
April 20	52	35	0.00	0.0
April 21	57	31	0.00	0.0
April 22	60	32	0.00	0.0
April 23	62	32	0.00	0.0
April 24	64	36	0.00	0.0
April 25	54	47	1.31	0.0
April 26	67	47	0.42	0.0
April 27	60	40	0.21	0.0
April 28	60	45	0.00	0.0
April 29	52	43	0.02	0.0
April 30	48	37	0.00	0.0

May 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	60	33	0.00
May 2	90	49	0.00
May 3	80	50	0.30
May 4	66	50	0.01
May 5	73	51	0.00
May 6	67	49	0.05
May 7	64	43	0.00
May 8	62	40	0.00
May 9	60	45	0.00
May 10	61	43	0.00
May 11	65	45	0.00
May 12	55	35	0.00
May 13	57	37	0.00
May 14	61	49	0.00
May 15	76	50	0.09
May 16	56	48	0.00
May 17	71	47	0.00
May 18	61	43	0.00
May 19	57	37	0.27
May 20	79	49	0.00
May 21	78	44	0.00
May 22	62	50	0.03
May 23	78	52	0.00
May 24	59	49	0.00
May 25	88	50	0.00
May 26	75	57	0.04
May 27	58	48	0.00
May 28	58	48	0.00
May 29	86	54	0.00
May 30	69	53	0.00
May 31	77	52	0.00

June 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	80	62	0.00
June 2	83	55	0.00
June 3	60	48	0.00
June 4	51	46	0.40
June 5	55	46	0.04
June 6	62	50	0.01
June 7	64	50	0.00
June 8	78	52	0.00
June 9	78	46	0.00
June 10	73	47	0.00
June 11	67	51	0.00
June 12	84	47	0.00
June 13	82	62	0.00
June 14	75	54	0.07
June 15	69	52	0.00
June 16	85	51	0.00
June 17	69	54	0.00
June 18	91	55	1.09
June 19	78	57	0.05
June 20	78	51	0.00
June 21	74	56	0.00
June 22	70	51	0.00
June 23	66	53	0.18
June 24	73	54	0.01
June 25	71	53	0.03
June 26	76	50	0.00
June 27	82	54	0.04
June 28	67	61	1.38
June 29	85	64	0.00
June 30	85	65	0.00

July 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	88	69	0.05
July 2	76	64	0.00
July 3	88	64	0.00
July 4	93	68	0.00
July 5	89	67	0.00
July 6	87	60	0.09
July 7	78	51	0.00
July 8	80	52	0.00
July 9	84	58	0.00
July 10	89	59	0.00
July 11	79	59	0.00
July 12	81	58	0.00
July 13	76	60	0.00
July 14	72	56	0.00
July 15	75	63	0.00
July 16	78	62	0.00
July 17	80	64	1.17
July 18	80	63	0.00
July 19	78	53	0.00
July 20	81	54	0.00
July 21	76	54	0.00
July 22	70	58	0.33
July 23	78	70	0.07
July 24	75	68	0.00
July 25	79	68	0.00
July 26	78	67	1.05
July 27	81	61	0.68
July 28	81	67	0.15
July 29	82	63	0.00
July 30	81	59	0.00
July 31	82	63	0.00

August 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	79	64	0.82
August 2	90	71	0.00
August 3	87	70	0.55
August 4	78	67	0.61
August 5	83	66	0.00
August 6	93	66	0.00
August 7	93	71	0.00
August 8	83	71	0.06
August 9	88	70	0.01
August 10	83	62	0.00
August 11	75	58	0.00
August 12	70	64	0.30
August 13	71	65	0.00
August 14	75	65	0.35
August 15	83	69	0.00
August 16	85	63	0.00
August 17	77	58	0.27
August 18	82	64	0.10
August 19	75	58	0.00
August 20	73	58	0.00
August 21	72	56	0.00
August 22	79	64	0.76
August 23	77	57	0.00
August 24	80	54	0.00
August 25	77	58	0.00
August 26	76	61	0.00
August 27	86	65	0.00
August 28	93	70	0.00
August 29	89	71	0.00
August 30	83	59	0.00
August 31	71	53	0.00

September 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	71	51	0.00
September 2	78	58	0.00
September 3	90	66	0.00
September 4	87	68	0.00
September 5	81	65	0.00
September 6	92	66	0.37
September 7	70	57	0.00
September 8	67	52	0.00
September 9	63	46	0.00
September 10	63	46	0.63
September 11	74	57	2.08
September 12	70	65	0.00
September 13	75	59	0.04
September 14	77	57	0.00
September 15	75	54	0.00
September 16	84	59	0.00
September 17	82	63	0.00
September 18	77	63	0.54
September 19	65	57	0.00
September 20	62	52	0.07
September 21	66	53	0.00
September 22	71	47	0.01
September 23	64	41	0.00
September 24	55	42	0.00
September 25	65	41	1.75
September 26	75	63	0.24
September 27	70	56	0.03
September 28	65	50	0.02
September 29	69	45	0.00
September 30	66	46	0.00

October 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	54	50	0.17
October 2	53	49	0.96
October 3	68	50	0.34
October 4	65	56	0.00
October 5	63	44	0.00
October 6	59	42	0.00
October 7	64	53	0.00
October 8	53	47	0.00
October 9	82	50	0.00
October 10	84	55	0.00
October 11	55	50	0.62
October 12	60	41	0.00
October 13	50	37	0.11
October 14	57	33	0.00
October 15	63	33	0.24
October 16	57	39	0.01
October 17	58	39	0.01
October 18	46	30	0.00
October 19	57	33	0.00
October 20	64	38	0.00
October 21	47	31	0.00
October 22	49	29	0.00
October 23	52	37	0.29
October 24	47	37	0.10
October 25	47	28	0.00
October 26	46	25	0.00
October 27	42	35	1.29
October 28	45	37	0.08
October 29	51	38	0.71
October 30	49	35	0.00
October 31	47	29	0.01

November 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	50	42	0.03	0.0
November 2	50	48	0.76	0.0
November 3	58	45	1.53	0.0
November 4	51	33	0.00	0.0
November 5	42	31	0.20	0.0
November 6	51	40	0.78	0.0
November 7	61	43	0.00	0.0
November 8	55	34	0.00	0.0
November 9	47	27	0.64	0.0
November 10	46	36	0.55	0.0
November 11	41	26	0.00	0.0
November 12	47	21	0.00	0.0
November 13	51	35	1.50	0.0
November 14	36	18	0.00	0.0
November 15	31	15	0.00	0.0
November 16	35	27	1.17	6.1
November 17	46	30	0.00	0.0
November 18	38	29	0.00	0.0
November 19	35	31	0.13	1.2
November 20	34	25	0.50	7.1
November 21	36	16	0.00	0.0
November 22	17	6	0.00	0.0
November 23	28	4	0.00	0.0
November 24	39	15	0.00	0.0
November 25	37	34	0.26	0.0
November 26	37	34	0.41	0.6
November 27	47	33	1.78	0.9
November 28	41	31	0.02	0.0
November 29	43	29	0.00	0.0
November 30	42	24	0.00	0.0

December 2018 Portland Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	43	30	0.00	0.0
December 2	46	34	0.78	0.0
December 3	53	33	0.00	0.0
December 4	35	19	0.00	0.0
December 5	32	15	0.00	0.0
December 6	38	17	0.00	0.0
December 7	38	18	0.00	0.0
December 8	26	11	0.00	0.0
December 9	34	12	0.00	0.0
December 10	33	16	0.00	0.0
December 11	32	10	0.00	0.0
December 12	31	14	0.00	0.0
December 13	29	7	0.00	0.0
December 14	43	23	0.00	0.0
December 15	50	25	0.00	0.0
December 16	40	25	0.05	0.2
December 17	36	32	0.53	4.1
December 18	35	19	0.00	0.0
December 19	37	17	0.00	0.0
December 20	41	17	0.00	0.0
December 21	54	31	1.29	0.0
December 22	55	30	0.02	0.0
December 23	36	21	0.00	0.0
December 24	36	20	0.00	0.0
December 25	35	18	0.00	0.0
December 26	36	14	0.00	0.0
December 27	32	20	0.00	0.0
December 28	43	26	0.78	1.1
December 29	50	24	0.00	0.0
December 30	27	20	0.00	0.0
December 31	41	27	0.20	0.1

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Weather Station Details

Years	Station	Coordinates
1940–2024	Portland International JetPort	location
1871–1940	Portland	location