Weather archive in Portland (airport), Maine

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Date / Local time		T	Po	P	Pa	U	DD	Ff	ff10	ff3	N	WW	W1	W2	Tn	Tx	Cl	Nh	H	Cm	Ch	VV	Td	RRR	tR	E	Tg	E'	sss
2026 May 21, Thursday	20	12.8 55	765.7 30.15 1020.85 1020.85	767.1 30.2 1022.72 1022.72	0.6 0.02 0.8 0.8	59	Wind blowing from the south-southwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas				12.2 54	18.9 66			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	5.0 41
	17	15.6 60	765.1 30.12 1020.05 1020.05	766.5 30.18 1021.92 1021.92	0.2 0.01 0.27 0.27	46	Wind blowing from the south-southwest	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	3.9 39
	14	17.8 64	764.9 30.11 1019.78 1019.78	766.3 30.17 1021.65 1021.65	-0.5 -0.02 -0.67 -0.67	40	Wind blowing from the west-northwest	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)	9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft		70 – 80%. 7/10 – 8/10. 6 oktas				13.3 56	18.3 65			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	3.9 39
	11	15.6 60	765.4 30.13 1020.45 1020.45	766.7 30.19 1022.18 1022.18	0.5 0.02 0.67 0.67	46	Wind blowing from the north	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)	8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft		70 – 80%. 7/10 – 8/10. 6 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	3.9 39
	08	13.3 56	764.9 30.11 1019.78 1019.78	766.3 30.17 1021.65 1021.65	2.2 0.09 2.93 2.93	47	Wind blowing from the north	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			100%. 10/10. 8 oktas				12.2 54	31.7 89			2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	2.2 36
	05	13.3 56	762.7 30.03 1016.85 1016.85	763.9 30.07 1018.45 1018.45	2.6 0.1 3.47 3.47	47	Wind blowing from the north	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	2.2 36
	02	17.8 64	760.1 29.93 1013.38 1013.38	761.5 29.98 1015.25 1015.25	1.3 0.05 1.73 1.73	40	Wind blowing from the north-northwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			no clouds no clouds no clouds				16.7 62	25.6 78						16.0 9.9	3.9 39
May 20, Wednesday	23	21.7 71	758.8 29.87 1011.65 1011.65	760.2 29.93 1013.52 1013.52	2.5 0.1 3.33 3.33	30	Wind blowing from the north-northwest	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)	11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft		20–30%. 2/10–3/10. 2 oktas								2500 or more, or no clouds. 8202 or more, or no clouds.			16.0 9.9	3.3 38
May 20, Wednesday	20	25.6 78	756.3 29.78 1008.32 1008.32	757.7 29.83 1010.18 1010.18	1.8 0.07 2.4 2.4	35	Wind blowing from the north-west	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			no clouds no clouds no clouds				16.7 62	31.7 89						16.0 9.9	8.9 48