Alaska Annual Rainfall and Climate Data - see below for individual cities

 

 

Alaska climate data

City

Avg Annual Precip

Avg Snow Annual

Avg. days of Precip Avg # thunderstorm days Avg # hail days Avg Annual Wind / Highest Record Wind
Anchorage 16.08 71.2 117 0 0 7.1 / 64 mph
Barrow 4.16 30.3 78 0 0 12 / 74 mph
Bethel 16.18 55.1 141 0 0 12.6 / 60 mph
Fairbanks 10.34 67.0 107 0 0 5.4 / 40 mph
Homer 25.45 57.8 146 0 0 7.6 / 69 mph
Juneau 58.33 96.9 221 0 0 8.2 / 58 mph
Kodiak 75.35 77.9 192 0 0 11 / 75 mph
Nome 16.56 63.7 130 0 0 10.4 / 55 mph
Valdez 67.41 322.9 200 0 0 6.1 / 69 mph 
Alaska Annual Precipitation Average - 22.70", 39th wettest in the U.S.
Alaska Tornado Average -  less than 1 per year, lowest average in the U.S.
Largest reported Tornado in Alaska from 1950-2011, 11/4/1959 - 10 yards wide
Month with highest number of reported Tornadoes in Alaska from 1950-2011 - June, 2 tornadoes
Average time of occurrence of reported Tornadoes in Alaska from 1950-2011 - 4:20 pm
  

Alaska Precipitation Records

  • Driest location ranked by lowest average annual precipitation: Kuparuk, northern Alaska, 3.61"
  • Wettest location ranked by highest average annual precipitation: Little Port Walter, southeastern
    Alaska, 225.35"
  • Snowiest location ranked by highest average annual snowfall: Thompson Pass, southeastern Alaska, 551.5"
  • State precipitation record for 24 hours - Angoon, southeastern Alaska, 10/12/1982, 15.20" 
  • State precipitation record for 1 year - MacLeod Harbor, southern Alaska, 1976, 332.29"
  • State snowfall record for 24 hours - Thompson Pass, southeastern Alaska, 12/9/1955, 62.0"
  • State snow record for 1 season - Thompson Pass, southeastern Alaska, 1952-1953, 974.4"
  • In the coastal mountain locations of Alaska, it is estimated that over 1000" (83 feet) of snow falls each season.
  • The "Great Fairbanks Flood" occurred from August 8 - 20th, 1967. More than 10 inches of rain fell over
    the two-week period - average for the entire month is only 3 inches. Damages were estimated at $100 million.

Alaska temperature records and averages
Precipitation data for other U.S. states
Data sources: National Climatic Data Center, Severe thunderstorm / tornado watch data period is 1999 - 2008, NOAA Storm Prediction Center, Tornado climate data -
NOAA Storm Prediction Center, State lightning flash density average - 1997-2011, Vaisala

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