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United States of America

PORTLAND, MAINE


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Elevation: 7 feet     Latitude: 43 39N     Longitude: 070 19W

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MONTHLY - WEATHER AVERAGES SUMMARY   [ Show All Data ]
[ °C ]   °F
Average Temperature
Years on Record: 91  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 45.722.12432.843.253.362.768.567.359.649.13927.2

Average High Temperature
Years on Record: 91  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 5531.133.341.252.36372.578.37769.458.947.335.7

Average Low Temperature
Years on Record: 91  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F 36.513.214.824.434.143.652.958.757.549.739.430.718.8

Average Precipitation
Years on Record: 91  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 44.23.83.6443.53.43.12.93.43.84.54.1

Average Number of Days With Precipitation
Years on Record: 91  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 13111101212121210109101112

Highest Recorded Temperature
Years on Record: 72  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F10367648892949810010395887471

Lowest Recorded Temperature
Years on Record: 72  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F-39-26-39-2182333403323153-21

Average Length of Day
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Hours12.79.91112.51415.31615.614.412.911.510.29.5

Average Number of Days Above 90F/32C
Years on Record: 91  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 4.7------------0.311.81.30.4---------

Average Number of Days Below 32F/0C
Years on Record: 91  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days 148.529.526.524.912.11.6---------0.67.31827.9

Average Snowfall
Years on Record: 91  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in 71.419.717.412.83.20.1------------0.23.214.8

Average Number of Rainy Days
Years on Record: 53  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days129111011121211109991212

Most Rain Reported in a Month
Years on Record: 48  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in.66.311.97.1109.99.66.87.515.29.812.313.59.7

Average Number of Days With Snow
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days27.77.96.15.11------------------1.56.1

Average Relative Humidity
Years on Record: 20  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%69.965.161.264.164.770.474.775.275.376.373.470.467.1

Average Morning Relative Humidity
Years on Record: 48  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%79757574737578808386848278

Average Evening Relative Humidity
Years on Record: 48  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%62625960586163626364646665

Average Dew Point
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F36.612.814.72231.94353.659.758.75240.330.119.5

Average Wind Speed
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
mph8.18.38.79.49.48.67.676.97.37.98.28.3







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