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Vs > Helena, Mt
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Portland, Maine vs Helena, Mt Climate & Distance Between

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  • The distance between Portland, Maine, Usa and Helena, Mt, Usa is approximately 3,248 km or 2,019 mi.
  • To reach Portland, Maine in this distance one would set out from Helena, Mt bearing 80.4° or E and follow the great circles arc to approach Portland, Maine bearing 110.6° or ESE .
  • Portland, Maine has a warm summer continental/ hemiboreal climate with no dry season (Dfb) whereas Helena, Mt has a mid-latitude cool steppe climate (BSk).
  • Portland, Maine is in or near the cool temperate wet forest biome whereas Helena, Mt is in or near the cool temperate steppe biome.
  • The annual mean temperature is 0.8 °C (1.4°F) warmer.
  • Average monthly temperatures vary by 1.1 °C (2°F) less in Portland, Maine. The continentality subtype is subcontinental for both.
  • Total annual precipitation averages 831.8 mm (32.7 in) more which is equivalent to 831.8 l/m² (20.41 US gal/ft²) or 8,318,000 l/ha (889,249 US gal/ac) more. About 3 5/6 as much.
  • The altitude of the sun at midday is overall 3° higher in Portland, Maine than in Helena, Mt.

Climate Comparison Table

The table shows values for Portland, Maine relative to Helena, Mt. You can also view this comparison the other way around from the perspective of Helena, Mt vs Portland, Maine.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) +0 (+1) -2 (-4) -2 (-3) -2 (-4) +-1 (-2) +-2 (-3) -3 (-6) -3 (-6) +0 (-1) +0 (+0) +3 (+5) +2 (+4) +-1 (-2)
average temperature iconAverage Temperature °C ( °F) +1 (+1) -2 (-3) 0 (-1) 0 (0) +0 (+1) +0 (+0) 0 (-1) 0 (0) +2 (+4) +2 (+3) +4 (+7) +3 (+5) +1 (+1)
minimum temperature iconAverage Min Temperature °C ( °F) +1 (+2) -1 (-3) +1 (+2) +2 (+4) +2 (+4) +2 (+4) +3 (+5) +3 (+5) +4 (+8) +4 (+7) +5 (+10) +4 (+7) +3 (+4)
rainfall iconAverage Precipitation mm (in) +74 (+3) +74 (+3) +75 (+3) +79 (+3) +47 (+2) +40 (+2) +51 (+2) +40 (+2) +49 (+2) +84 (+3) +119 (+5) +101 (+4) +832 (+33)
daylight iconAverage Daylight Hours & Minutes/ Day +0h 19' +0h 11' +0h 02' -0h 08' -0h 17' -0h 22' -0h 19' -0h 11' -0h 01' +0h 08' +0h 17' +0h 22'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) +2.9 +2.9 +2.9 +3 +2.9 +3 +3 +3 +3 +3 +3 +3   +3

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Portland, Maine vs Helena, Mt Discussion

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