> > Usa > Portland, Maine

Usa flag

Portland, Maine Climate & Temperature

  • Portland, Maine, Usa is at 4338'N, 7018'W, 19 m (62 ft). See map.
  • Portland, Maine has a humid continental climate with severe winters, no dry season, warm summers and strong seasonality (Kppen-Geiger classification: Dfb).
  • According to the Holdridge life zones system of bioclimatic classification Portland, Maine is situated in or near the cool temperate wet forest biome.
  • The average annual temperature is 7.4 degrees Celsius (45.3 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 26.5 °C (47.7°F). This indicates that the continentality type is continental, subtype subcontinental. Portland, Maine Climate Graph
  • In the winter time records indicate temperatures by day reach 0.5°C (32.8°F) on average falling to -9.9°C (14.2°F) overnight.
  • In spring time temperatures climb reaching 11.3°C (52.3°F) generally in the afternoon with overnight lows of 1.1°C (34°F).
  • During summer average high temperatures are 24.6°C (76.3°F) and average low temperatures are 13.2°C (55.8°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 14.6°C (58.3°F) during the day and lows of 4°C (39.2°F) generally shortly after sunrise.
  • Total annual Precipitation averages 1126.3 mm (44.3 inches) which is equivalent to 1126.3 Litres/m (27.63 Gallons/ft).
  • On average there are 2592 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
  • Were you to burrow down through the centre of the Earth from Portland, Maine you would pop up nearest to the climate station at Albany, Western Australia, Australia where you would find a Mediterranean climate.

Portland, Maine Climate Table

  Climate Variable 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 4h 40' 5h 48' 6h 29' 7h 02' 8h 27' 9h 34' 10h 09' 9h 23' 7h 50' 6h 30' 4h 32' 4h 36' 7h 05'
Average Daylight Hours/ Day 9h 19' 10h 24' 11h 51' 13h 23' 14h 41' 15h 22' 15h 04' 13h 56' 12h 27' 10h 55' 9h 37' 8h 58' 12h 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)
Sun altitude at solar noon on the 21st day (). 26.5 35.9 46.7 58.4 66.6 69.8 66.7 58.3 46.9 35.4 26.3 23 46.7

Get Greater Insight into Portland, Maines Climate

Climatemps.com contains over 12 and a half million climate comparison reports ready to view now. Colour coded comparison tables highlight differences and similarities in the data so you can better understand the nuances. Select the first letter of a location (for example one you know well) to discover the greater insight analysing Portland, Maines climate relative to these others facilitates:

Homepage


Go up