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Climate
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United States of America

SAINT JOHN HARBOR, ALASKA


Home > North America > United States > Alaska
Elevation: 10 meters     Latitude: 56 28N     Longitude: 133 06W

WEATHER
 
CURRENT CONDITIONS

Sunrise/Set
09:35 am
12:07 am
Local Time
5:11 pm EDT
18 April, 2024
 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °F ]   °C
TEMPERATURE 
Average Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C6.3-11.7---5.68.210.412.913.3117.32.11.9

Average High Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C9.61.34.5---9.112.414.117.217.814.79.94.44.2

Average Low Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C3.1-3.3-1.1---24.16.88.78.77.34.6-0.4-0.3

Highest Recorded Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C301014.421.722.221.73028.321.115.613.91030

Lowest Recorded Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C-18.3-18.3-16.1-2.2---1.153.91.1-2.2-8.3-15.6-18.3

Average Number of Days Below 32F/0C
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1042621.516.461.8------------0.81516

Average Number of Days Below 0F/-17C
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days0.40.2------------------------------0.2



PRECIPITATION 
Average Precipitation
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm16771591471091078210111375181279145180

Average Number of Days With Precipitation
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days226181719201818181317242024

Most Reported Precipitation in a Month
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm483287231159120135117156103218483185277

Least Reported Precipitation in a Month
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm41667141934375654213613865102

Most Precipitation Reported in a Day
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm9754.941.739.126.916.330.727.440.451974949.8

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days15713141213131112813181416

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days43453212326834

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days10111---------------2311



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm116.142.713.713.51.5------------------11.433.3

Most Snow Reported in a Month
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm68.168.120.327.92.5------------------2935.6



DEGREE DAYS 
Heating Degree Days
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days2420427.8312.2323.9216.1141.773.321.117.856.1171.1322.2336.7

Cooling Degree Days
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days2.2------------------1.70.6------------

Growing Degree Days
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days233.1------------13.886.7101.631------------



SKY CONDITIONS 
Average Length of Day
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Hours13.18.410.312.61517.418.717.915.713.310.98.97.8



SOLAR RADIATION 
Average Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m291.84.38.113.116.617.51613.18.952.51.1

Average Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m25.31.32.74.97.39.39.89.37.95.33.11.70.9

Average Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m29.83.87.310.613.915.115.11412.810.37.44.72.2

Average Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m28.53.16.28.512.313.814.212.410.58.76.44.11.7

Maximum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m291.84.38.113.116.617.51613.18.952.51.1

Maximum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m25.51.53.35.47.49.4109.58.15.93.41.90.9

Maximum Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m212.54.910.614.518.418.61916.215.814.88.66.22.7

Maximum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m212.54.29.112.419.420.422.116.615.314.47.75.62.1

Minimum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m27.31.53.36.811.113.914.712.610.26.73.81.80.9

Minimum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m24.91.12.34.67.199.68.97.24.72.61.40.8

Minimum Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m27.52.85.2811.312.512.7119.67.15.231.6

Minimum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m25.32.13.95.98.49.29.46.85.94.84.12.31.1




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