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Vs > Cairo, Illinois
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Portland, Maine vs Cairo, Illinois Climate & Distance Between

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  • The distance between Portland, Maine, Usa and Cairo, Illinois, Usa is approximately 1,755 km or 1,091 mi.
  • To reach Portland, Maine in this distance one would set out from Cairo, Illinois bearing 59.2° or ENE and follow the great circles arc to approach Portland, Maine bearing 71.5° or ENE .
  • Portland, Maine has a warm summer continental/ hemiboreal climate with no dry season (Dfb) whereas Cairo, Illinois has a humid subtropical climate (Cfa).
  • Portland, Maine is in or near the cool temperate wet forest biome whereas Cairo, Illinois is in or near the warm temperate moist forest biome.
  • The mean annual temperature is 7.9 °C (14.3°F) cooler.
  • Average monthly temperatures vary by 2.5 °C (4.5°F) more in Portland, Maine. The continentality subtype is subcontinental for both.
  • Total annual precipitation averages 26.7 mm (1.1 in) less which is equivalent to 26.7 l/m² (0.66 US gal/ft²) or 267,000 l/ha (28,544 US gal/ac) less. About 1 as much.
  • There are 309 fewer hours of sunlight per year in Portland, Maine. In whichever way circa 0h 50' less per day or about 8/9 as many.
  • The altitude of the sun at midday is overall 6.6° lower in Portland, Maine than in Cairo, Illinois.
  • Relative humidity levels are 1.5% higher.
  • The mean dew point temperature is 6.8°C (12.3°F) lower.

Climate Comparison Table

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) -8 (-14) -8 (-15) -9 (-16) -10 (-17) -9 (-16) -8 (-15) -6 (-11) -7 (-12) -7 (-13) -7 (-13) -6 (-10) -6 (-11) -8 (-14)
average temperature iconAverage Temperature °C ( °F) -9 (-17) -10 (-18) -8 (-15) -9 (-17) -9 (-16) -9 (-15) -7 (-12) -7 (-12) -7 (-13) -7 (-13) -5 (-10) -7 (-13) -8 (-14)
minimum temperature iconAverage Min Temperature °C ( °F) -10 (-19) -11 (-20) -8 (-15) -9 (-16) -9 (-16) -9 (-16) -7 (-13) -7 (-13) -8 (-14) -8 (-14) -5 (-9) -8 (-14) -8 (-15)
rainfall iconAverage Precipitation mm (in) -24 (-1) -9 (0) -29 (-1) 0 (0) -20 (-1) -17 (-1) -3 (0) -6 (0) +3 (+0) +25 (+1) +32 (+1) +22 (+1) -27 (-1)
rain days iconNumber of Precipitation Days (% chance of precip. on a day ) +2 (+6) +1 (+4) 0 ( 0) +1 (+3) +2 (+6) +2 (+7) +1 (+3) +2 (+6) +3 (+10) +1 (+3) +2 (+7) +1 (+3)   +18 (+5)
sunshine iconAverage Sunlight Hours/ Day +0h 38' +0h 12' -0h 40' -1h 30' -0h 50' -1h 12' -0h 36' -1h 19' -1h 32' -1h 30' -1h 46' -0h 01'   -0h 50'
daylight iconAverage Daylight Hours & Minutes/ Day -0h 37' -0h 22' -0h 04' +0h 15' +0h 32' +0h 41' +0h 37' +0h 22' +0h 03' -0h 15' -0h 33' -0h 42'   0h 00'
sun altitude iconSun altitude at solar noon on the 21st day (°) -6.7 -6.6 -6.7 -6.6 -6.7 -6.6 -6.6 -6.7 -6.6 -6.6 -6.6 -6.6   -6.6
relative humidity iconRelative Humidity (%) -3 -4 +1 +4 +1 +4 +3 +1 +4 +7 +5 -6   +1.4
dewpoint temperature iconAverage Dew Point Temperature °C & (°F) -9.1 (-16) -9.6 (-17) -7 (-13) -7.4 (-13) -7.9 (-14) -7.1 (-13) -5.5 (-10) -6.2 (-11) -6 (-11) -5.1 (-9) -3.6 (-6) -7.5 (-14) -6.8 (-12)

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Portland, Maine vs Cairo, Illinois Discussion

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