Weather Averages for Portland, ME

7-day Forecast / 10-day Forecast

Sunday
	High: 67°F Low: 56°F
Sunny

Monday
	High: 64°F Low: 55°F
Cloudy

Tuesday
	High: 59°F Low: 53°F
Overcast

Wednesday
	High: 70°F Low: 56°F
Sunny

Thursday
	High: 67°F Low: 49°F
Patchy rain nearby

Latitude: 43°39'N, Longitude: 70°19'W, Elevation: 57.0 ft, Distance: 2.98 mi Portland, ME Averages »

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 48 years	°F	46	21	24	33	43	53	62	69	66	59	48	39	26
Average high temperature over 48 years	°F	55	31	33	41	53	62	73	78	78	69	59	46	36
Average low temperature over 48 years	°F	36	12	14	24	34	43	51	57	55	48	37	30	17
Highest recorded temperature over 48 years	°F	102	64	64	77	84	93	98	98	102	95	87	73	69
Lowest recorded temperature over 48 years	°F	-25	-25	-25	-20	8	23	35	39	33	26	15	3	-20
Average number of rainy days over 53 years	days	129	11	10	11	12	12	11	10	9	9	9	12	12
Average number of days above 90°F over 48 years	days	5	-	-	-	-	-	1	2	1	-	-	-	-
Average precipitation over 48 years	in	43.6	3.7	3.3	4.0	3.9	3.6	3.1	2.9	2.9	3.2	3.6	5.0	4.3
Average dew point over 48 years	°F	36	12	14	21	32	43	53	59	57	51	39	31	17
Most recorded rainfall over 48 years	in	66.3	11.9	7.1	10.0	9.9	9.6	6.8	7.5	15.2	9.8	12.3	13.5	9.7
Least recorded rainfall over 48 years	in	26.3	0.8	-	0.8	1.0	0.5	0.8	0.6	0.5	0.3	0.6	0.9	1.0
Average number of days with thunderstorms over 48 years	days	16	-	-	-	-	2	4	4	4	1	1	-	-
Average number of days with fog over 48 years	days	167	10	9	12	14	15	16	17	17	16	15	14	12
Average morning relative humidity over 48 years	%	79	75	75	74	73	75	78	80	83	86	84	82	78
Average evening relative humidity over 48 years	%	62	62	59	60	58	61	63	62	63	64	64	66	65
Average wind speed over 48 years	mph	10.0	9.0	10.0	10.0	11.0	11.0	10.0	10.0	10.0	10.0	9.0	9.0	9.0
Average number of days below 32°F over 48 years	days	155	30	26	26	13	2	-	-	-	1	9	19	29
Average snowfall over 53 years	in	70.5	19.0	17.4	13.0	3.1	0.2	-	-	-	-	0.2	3.0	14.6
Average number of days above 65°F over 48 years	days	131	-	-	-	3	13	25	30	30	22	7	1	-
Average number of clear days over 53 years	days	101	10	9	9	7	6	7	7	9	10	10	8	9
Heating degree days over 30 years	days	7378	1370	1168	992	651	363	100	11	39	189	512	789	1194
Cooling degree days over 30 years	days	268	-	-	-	-	-	22	123	111	12	-	-	-
Average possibility of sunshine over 53 years	%	57	56	59	56	54	55	59	63	63	62	58	48	53
Average number of cloudy days over 53 years	days	165	14	12	15	16	15	13	13	11	12	13	15	15
Average number of partly cloudy days over 53 years	days	99	7	7	7	7	10	10	11	11	8	8	7	7
Average number of days below 5°F over 48 years	days	23	9	7	2	-	-	-	-	-	-	-	-	5

Check weather averages for nearby locations (some locations might offer more data):

Latitude: 43°30'N, Longitude: 70°27'W, Elevation: 80.0 ft, Distance: 14.69 mi

Latitude: 43°42'N, Longitude: 70°37'W, Elevation: 150.0 ft, Distance: 18.06 mi

Latitude: 43°52'N, Longitude: 69°55'W, Elevation: 79.0 ft, Distance: 22.20 mi

Latitude: 43°54'N, Longitude: 69°56'W, Elevation: 75.0 ft, Distance: 23.14 mi

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