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United States of America

SAINT JOHN HARBOR, ALASKA


Home > North America > United States > Alaska
Elevation: 30 feet     Latitude: 56 28N     Longitude: 133 06W

WEATHER
 
CURRENT CONDITIONS

 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °C ]   °F
TEMPERATURE 
Average Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 43.330.235.1---4246.850.855.255.951.845.135.735.5

Average High Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 49.234.340.1---48.454.457.362.96458.449.94039.5

Average Low Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 37.52630---35.639.344.347.647.745.240.231.331.4

Highest Recorded Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 86505871727186837060575086

Lowest Recorded Temperature
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F -1-1328323441393428174-1

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 
Days 1042621.516.461.8------------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 
Days 0.40.2------------------------------0.2



PRECIPITATION 
Average Precipitation
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 666.35.84.34.23.244.537.1115.77.1

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 
Days 226181719201818181317242024

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 
in 1911.39.16.24.75.34.66.24.18.6197.310.9

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 
in 1.62.62.81.63.61.732.61.65.45.42.54

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 
in 3.82.21.61.51.10.61.21.11.623.81.92

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 
Days 15713141213131112813181416

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 
Days 43453212326834

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 
Days 10111---------------2311



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 45.716.85.45.30.6------------------4.513.1

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 
in 26.826.88111------------------11.414



DEGREE DAYS 
Heating Degree Days
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 43567705625833892551323832101308580606

Cooling Degree Days
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 4------------------31------------

Growing Degree Days
Years on Record: 6  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days419.5------------24.8156182.955.8------------



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 
kWh/m22.50.51.22.33.74.64.94.43.72.51.40.70.3

Average Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m21.50.40.81.422.62.72.62.21.50.90.50.2

Average Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m22.71.122.93.94.24.23.93.62.92.11.30.6

Average Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m22.40.91.72.43.43.83.93.42.92.41.81.10.5

Maximum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m22.50.51.22.33.74.64.94.43.72.51.40.70.3

Maximum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m21.50.40.91.52.12.62.82.62.21.60.90.50.3

Maximum Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m23.51.42.945.15.25.34.54.44.12.41.70.8

Maximum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m23.51.22.53.55.45.76.24.64.242.11.60.6

Minimum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m220.40.91.93.13.94.13.52.81.91.10.50.3

Minimum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m21.40.30.61.322.52.72.521.30.70.40.2

Minimum Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m22.10.81.52.23.13.53.53.12.721.40.80.4

Minimum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m21.50.61.11.62.32.62.61.91.71.31.10.60.3




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