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Attu Island, Alaska Climate & Temperature

  • Attu Island, Alaska, Usa is at 52°49'N, 173°10'E, 18 m (59 ft). See map.
  • Attu Island, Alaska has a subpolar oceanic climate that is mild with no dry season and moderate seasonality. Summers are cool and short (Köppen-Geiger classification: Cfc).
  • The average annual temperature is 3.9 degrees Celsius (39 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
  • Average monthly temperatures vary by 12 °C (21.6°F). This indicates that the continentality type is oceanic, subtype truly oceanic. Attu Island, Alaska Climate Graph
  • In the winter time records indicate temperatures by day reach 1.3°C (34.4°F) on average falling to -2°C (28.4°F) overnight.
  • In spring time temperatures climb reaching 3.3°C (38°F) generally in the afternoon with overnight lows of 0°C (32°F).
  • During summer average high temperatures are 10.7°C (51.2°F) and average low temperatures are 6.7°C (44°F).
  • Come autumn/ fall temperatures decrease achieving average highs of 7.3°C (45.2°F) during the day and lows of 3.7°C (38.6°F) generally shortly after sunrise.
  • Total annual Precipitation averages 1519 mm (59.8 inches) which is equivalent to 1519 Litres/m² (37.26 Gallons/ft²).
  • Were you to burrow down through the centre of the Earth from Attu Island, Alaska you would pop up nearest to the climate station at Gough Island, South Africa.

Attu Island, Alaska Climate Table

  Climate Variable Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 
Average Max Temperature °C ( °F) 1 (34) 1 (34) 2 (36) 3 (37) 5 (41) 8 (46) 11 (52) 13 (55) 11 (52) 7 (45) 4 (39) 2 (36) 6 (42)
 
Average Temperature °C ( °F) -1 (30) -1 (31) 0 (32) 2 (35) 4 (38) 6 (43) 9 (48) 11 (52) 9 (48) 6 (42) 2 (36) 1 (33) 4 (39)
 
Average Min Temperature °C ( °F) -3 (27) -2 (28) -2 (28) 0 (32) 2 (36) 4 (39) 7 (45) 9 (48) 7 (45) 4 (39) 0 (32) -1 (30) 2 (36)
 
Average Precipitation mm (in) 93 (4) 79 (3) 89 (4) 114 (4) 111 (4) 87 (3) 119 (5) 174 (7) 161 (6) 217 (9) 147 (6) 128 (5) 1519 (60)
Number of Wet Days (probability of rain on a day %) 26 (84) 19 (67) 25 (81) 23 (77) 18 (58) 15 (50) 18 (58) 18 (58) 21 (70) 27 (87) 29 (97) 29 (94) 268 (73)
Average Daylight Hours/ Day 8h 12' 9h 47' 11h 47' 13h 55' 15h 47' 16h 47' 16h 20' 14h 42' 12h 37' 10h 29' 8h 38' 7h 41' 12h 00'
Sun altitude at solar noon on the 21st day (°). 17.2 26.5 37.3 48.9 57.3 60.6 57.7 49.4 38 26.5 17.3 13.8 37.5

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