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Climate & Temperature > Usa > Juneau, Alaska Climate
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Juneau, Alaska Climate & Temperature

Juneau, Alaska Climate Graph
  • Juneau, Alaska, Usa is at 58°22'N, 134°35'W, 7 m (23 ft). See map.
  • Juneau, Alaska has a subarctic climate that has severe winters, no dry season, with cool, short summers and strong seasonality (Köppen-Geiger classification: Dfc).
  • According to the Holdridge life zones system of bioclimatic classification Juneau, Alaska is situated in or near the boreal rain forest biome.
  • The annual average temperature is 4.8 degrees Celsius (40.6 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 17.6 °C (31.7°F). This indicates that the continentality type is oceanic, subtype truly oceanic.
  • In the winter time records indicate temperatures by day reach -0.1°C (31.8°F) on average falling to -5.9°C (21.4°F) overnight.
  • In spring time temperatures climb reaching 8.3°C (46.9°F) generally in the afternoon with overnight lows of 0.3°C (32.6°F).
  • During summer average high temperatures are 17°C (62.5°F) and average low temperatures are 8.2°C (46.8°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 8.1°C (46.6°F) during the day and lows of 2.1°C (35.8°F) generally shortly after sunrise.
  • Total annual Precipitation averages 1379.5 mm (54.3 inches) which is equivalent to 1379.5 Litres/m² (33.84 Gallons/ft²).
  • If you were to burrow down through the Earth from Juneau, Alaska you would come out nearest to the climate station at Marion Island, South Africa.
Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
maximum temperature iconAverage Max Temperature °C ( °F) -1 (29) 1 (34) 4 (39) 8 (47) 13 (55) 16 (61) 18 (64) 17 (63) 13 (56) 8 (47) 3 (37) 0 (32) 8 (47)
average temperature iconAverage Temperature °C ( °F) -4 (24) -2 (28) 0 (33) 4 (40) 8 (47) 12 (53) 13 (56) 13 (55) 10 (49) 6 (42) 0 (32) -3 (27) 5 (41)
minimum temperature iconAverage Min Temperature °C ( °F) -7 (19) -5 (23) -3 (27) 0 (32) 4 (39) 7 (45) 9 (48) 9 (47) 6 (43) 3 (37) -3 (27) -5 (23) 1 (34)
rainfall iconAverage Precipitation mm (in) 115 (5) 95 (4) 83 (3) 70 (3) 87 (3) 80 (3) 106 (4) 135 (5) 171 (7) 199 (8) 125 (5) 113 (4) 1380 (54)
rain days iconNumber of Wet Days (probability of rain on a day) 18 (58%) 17 (60%) 18 (58%) 17 (57%) 18 (58%) 15 (50%) 17 (55%) 18 (58%) 20 (67%) 23 (74%) 20 (67%) 21 (68%)   222 (61%)
daylight iconAverage Daylight Hours & Minutes/ Day 07:14 09:18 11:48 14:26 16:49 18:11 17:33 15:25 12:49 10:11 07:49 06:31   12:00
sun altitude iconSun altitude at solar noon on the 21st day (°). 11.9 21.3 32.1 43.7 51.9 55.1 52 43.6 32.1 20.7 11.6 8.3   32

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