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United States of America

ISLESBORO, MAINE


Home > North America > United States > Maine
Elevation: 1 meter     Latitude: 44 24N     Longitude: 069 00W

WEATHER
 
CURRENT CONDITIONS

Sunrise/Set
05:26 am
07:39 pm
Local Time
3:03 am EDT
30 April, 2024
 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °F ]   °C
TEMPERATURE 
Average Temperature
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C7.4-5.9-4.80.26.111.91720.119.315.29.43.9-2.9

Average High Temperature
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C13.3-0.21.35.811.918.223.326.225.621.315.28.52.1

Average Low Temperature
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C1.7-11.6-10.8-5.40.25.610.713.813.19.13.7-0.7-7.9

Highest Recorded Temperature
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C36.71515.627.829.43535.636.736.736.730.622.818.3

Lowest Recorded Temperature
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C-33.3-33.3-33.3-27.8-12.2-5.60.66.11.7-4.4-6.7-16.7-32.8

Average Number of Days Above 90F/32C
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days3.9------------0.20.91.61.10.2---------

Average Number of Days Below 32F/0C
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days15729.826.927.115.62.2---------0.6818.528.3

Average Number of Days Below 0F/-17C
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days15.97.15.21.1------------------------2.6



PRECIPITATION 
Average Precipitation
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm1213998610010710489837798113138118

Average Number of Days With Precipitation
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days10497891099888109

Most Reported Precipitation in a Month
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm411260200269347250228221175269411327257

Least Reported Precipitation in a Month
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm42014697228161645029

Most Precipitation Reported in a Day
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm192.386.473.2104.1121.289.996.59586.9192.3127.8116.890.9

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days80766777666787

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days33333332222343

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days13111111111121



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm131.836.634.522.43.3---------------0.24.630.2

Most Snow Reported in a Month
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm114.396.5104.1114.340.6---------------7.645.7104.1



DEGREE DAYS 
Heating Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days4128.9760648.3563.9372.8199.458.91017.2106.1287.2443.3661.7

Cooling Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days137.8------------0.617.26549.45.6---------

Growing Degree Days
Years on Record: 66  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1024.6------------58.6210311.7289.3155---------



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  
Hours12.89.91112.51415.416.115.714.51311.410.19.5



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/m2136.19.513.416.318.219.719.418.214.39.76.15

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/m25.32.33.24.86.88.28.98.57.15.53.92.72

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/m215.112.215.317.216.916.717.117.317.916.613.610.49.5

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/m215.312.41617.516.616.117.117.418.616.813.510.510.5

Maximum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m2136.19.513.416.318.219.719.418.214.39.76.15

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/m25.52.43.55.178.498.77.55.842.72.1

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/m217.814.617.819.420.119.419.32020.419.117.312.712.8

Maximum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m219.715.519.420.622.221.521.723.223.420.918.613.515.1

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/m210.95.48.211.71315.215.616.615.412.47.95.24.1

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/m252.12.94.66.27.88.586.65.13.52.51.8

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/m212.21012.114.413.113.913.714.81513.910.48.37

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/m210.89.71213.610.611.110.612.613.312.69.17.77




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