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 | |
| 2025 July 18, Friday | 05 | 21.7 71 | 754.8 29.72 1006.32 1006.32 | 756.1 29.77 1008.05 1008.05 | 2.3 0.09 3.07 3.07 | 68 | Wind blowing from the north-northwest | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | 16.0 9.9 | 15.6 60 | ||||||||||||||||
02 | 24.4 76 | 752.5 29.63 1003.25 1003.25 | 754.0 29.69 1005.25 1005.25 | 0.8 0.03 1.07 1.07 | 77 | Wind blowing from the west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | no clouds no clouds no clouds | 20.0 68 | 26.7 80 | 16.0 9.9 | 20.0 68 | Trace of precipitation Trace of precipitation | 6 | |||||||||||||||
| July 17, Thursday | 23 | 25.6 78 | 751.7 29.59 1002.18 1002.18 | 753.0 29.65 1003.92 1003.92 | 0.5 0.02 0.67 0.67 | 79 | Wind blowing from the west-southwest | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 2000-2500 6562-8202 | 16.0 9.9 | 21.7 71 | Trace of precipitation Trace of precipitation | 3 | |||||||||||||||
20 | 24.4 76 | 751.2 29.57 1001.52 1001.52 | 752.5 29.63 1003.25 1003.25 | -1.3 -0.05 -1.73 -1.73 | 82 | Wind blowing from the south | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 20.0 68 | 28.9 84 | 2000-2500 6562-8202 | 16.0 9.9 | 21.1 70 | Trace of precipitation Trace of precipitation | 6 | ||||||||||||||
17 | 25.0 77 | 752.5 29.63 1003.25 1003.25 | 753.7 29.67 1004.85 1004.85 | -1.5 -0.06 -2 -2 | 88 | 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 | Thunderstorm, slight or moderate, without hail, but with rain and/or snow at time of observation. | 1500-2000 4921-6562 | 16.0 9.9 | 22.8 73 | Trace of precipitation Trace of precipitation | 3 | |||||||||||||||
14 | 27.2 81 | 754.0 29.69 1005.25 1005.25 | 755.5 29.74 1007.25 1007.25 | -1.8 -0.07 -2.4 -2.4 | 82 | Wind blowing from the south | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 50%. 5/10. 4 oktas | 22.8 73 | 28.9 84 | 200-300 656-984 | 16.0 9.9 | 23.9 75 | |||||||||||||||
11 | 27.8 82 | 755.8 29.76 1007.65 1007.65 | 757.1 29.81 1009.38 1009.38 | -1.2 -0.05 -1.6 -1.6 | 79 | Wind blowing from the south-southeast | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | 16.0 9.9 | 23.9 75 | ||||||||||||||||||
08 | 23.3 74 | 757.0 29.8 1009.25 1009.25 | 758.3 29.85 1010.98 1010.98 | 0.0 0 0 0 | 97 | Wind blowing from the south | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 100%. 10/10. 8 oktas | 20.0 68 | 100-200 328-656 | 12.0 7.5 | 22.8 73 | |||||||||||||||||
05 | 21.1 70 | 757.0 29.8 1009.25 1009.25 | 758.5 29.86 1011.25 1011.25 | -1.1 -0.04 -1.47 -1.47 | 97 | Calm, no wind | Calm | 20–30%. 2/10–3/10. 2 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 16.0 9.9 | 20.6 69 | ||||||||||||||||||