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Climate & Temperature > Usa > Portland, Maine Climate

Climate of Portland, Maine, Usa Average Weather

Portland, Maine Climate Graph
  • Portland, Maine, usa, 43°38'N, 70°18'W, 19 m (62 ft)
  • Portland, Maine has a humid continental climate with severe winters, no dry season, warm summers and strong seasonality (Köppen-Geiger classification: Dfb).
  • According to the Holdridge life zones system of bioclimatic classification Portland, Maine is close to the cool temperate wet forest biome.
  • The mean temperature is 7.4 degrees Celsius (45.3 degrees Fahrenheit).
  • Total annual Precipitation averages 1126.3 mm (44.3 in).
  • Annual sunshine averages 2592 hours.
  • If Portland, Maine were situated on the opposite side of the world what would the climate be like? Follow this link to find the nearest location on ClimaTemps.com!

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Average Max Temperature °C ( °F) -1 (30) 1 (33) 5 (41) 11 (52) 17 (63) 23 (73) 26 (79) 25 (77) 21 (69) 15 (59) 8 (47) 2 (35) 13 (55)
Average Temperature °C ( °F) -6 (21) -5 (23) 1 (33) 6 (43) 12 (53) 17 (62) 20 (69) 20 (67) 15 (59) 9 (49) 4 (39) -3 (26) 7 (45)
Average Min Temperature °C ( °F) -11 (11) -10 (13) -4 (24) 1 (34) 6 (43) 11 (52) 15 (58) 14 (57) 9 (49) 4 (38) -1 (30) -8 (18) 2 (36)
Average Precipitation mm (in) 90 (4) 85 (3) 93 (4) 104 (4) 92 (4) 87 (3) 79 (3) 73 (3) 79 (3) 99 (4) 131 (5) 116 (5) 1126 (44)
Number of Wet Days (probability of rain on a day) 12 (39%) 11 (39%) 12 (39%) 12 (40%) 13 (42%) 12 (40%) 10 (32%) 10 (32%) 10 (33%) 9 (29%) 11 (37%) 11 (35%)   133 (36%)
Average Sunlight Hours/ Day 04:40 05:48 06:29 07:02 08:27 09:34 10:09 09:23 07:50 06:30 04:32 04:36   07:05
Average Daylight Hours & Minutes/ Day 09:19 10:24 11:51 13:23 14:41 15:22 15:04 13:56 12:27 10:55 09:37 08:58   12:00
Percentage of Sunny (Cloudy) Daylight Hours 51 (49) 57 (43) 56 (44) 53 (47) 58 (42) 63 (37) 68 (32) 68 (32) 64 (36) 61 (39) 48 (52) 52 (48)   59 (41)

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