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Weather in December in Portland, Maine

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< December >
 
Normal Max/ High Temperature 2°C (35°F)
 
Average Temperature -3°C (26°F)
 
Min/ Low Temperature -8°C (18°F)
 
Normal Precipitation 116mm (4.6in)
Number of Wet Days (probability of rain on a day) 11 (35%)
Average Sunlight per day 04:36
Average Daylight per day 08:58
Sunny (Cloudy) Daylight Hours 52% (48%)
Sun altitude at solar noon on the 21st day.
23°


  • The average temperature in Portland, Maine in December is slightly cold at -3.1 °C (26.42 °F).
  • Afternoons can be very cool with average high temperatures reaching 1.7 °C (35.1 °F).
  • Overnight temperatures are generally cold with an average low of -7.9 °C (17.8 °F).
  • The range/ variation of diurnal mean temperatures in December is 9.6 °C (17.3 °F).
  • The weather in December is hardly dry with snow now and again. Circa 115.6mm (4.6in) of fluid is deposited across an average of 11 days.
  • In December the blue above Portland, Maine is slightly fair having on balance a modest 4:36 of splendid sunlight per day.
  • The shortest day is 8:55 long and the longest day is 9:08 long with an average length of 8:58.
  • There are approximately 4:11 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 52.4% of daylight hours and cloudy 47.6% of daylight hours.

Check the distance to and compare the Portland, Maine December averages with somewhere beginning with:

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Weather Trend Graph for December in Portland, Maine, Usa

Graph of weather in Portland, Maine in December

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