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United States of America

GROTON, MASSACHUSETTS


Home > North America > United States > Massachusetts
Elevation: 104 meters     Latitude: 42 36N     Longitude: 071 35W

WEATHER
 
CURRENT CONDITIONS

Sunrise/Set
05:46 am
07:41 pm
Local Time
6:08 am EDT
26 April, 2024
 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °F ]   °C
TEMPERATURE 
Average Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C7.4-6.1-4.90.46.713.117.820.319.214.68.23.2-2.8

Average High Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C13.9-0.21.16.313.320.124.727.326.121.615.38.82.4

Average Low Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C1-11.9-10.9-5.6-0.15.910.913.312.27.61.1-2.5-8.2

Highest Recorded Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C29.44.35.31116.823.527.929.428.624.418.512.37.7

Lowest Recorded Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C-18.3-18.3-16.4-8.6-3.33.47.711.29.34.4-2.9-5.4-16.1

Average Number of Days Above 90F/32C
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days5.3------------0.21.22.51.10.3---------

Average Number of Days Below 32F/0C
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days158.129.927.225.115.12.2---------0.48.421.228.4

Average Number of Days Below 0F/-17C
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days10.13.94.10.2------------------------1.8



PRECIPITATION 
Average Precipitation
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm12199477919812710610611810310210592

Average Number of Days With Precipitation
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1231110111111111010991010

Most Reported Precipitation in a Month
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm326283162211241326237247307247249223213

Least Reported Precipitation in a Month
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm25213323219542830362232

Most Precipitation Reported in a Day
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm169.456.466.385.856.173.7111103.977.2139.790.9169.482.8

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days79767777766577

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days28233222222233

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days12111111111111



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm160.841.944.726.78.9---------------0.29.429

Most Snow Reported in a Month
Years on Record: 82  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm142.2110.5142.273.750.8---------------5.146.585.8



DEGREE DAYS 
Heating Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days4114.4757.2651.7556.7351.1168.948.311.724.4117.8314.4455.6656.7

Cooling Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days162.2------------4.431.772.849.43.9---------

Growing Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1069.2------------94.7233.3320.3284.2136.7---------



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  
Hours12.71011.112.513.915.215.815.514.312.911.510.39.6



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/m2136.39.713.11617.919.419.817.814.39.96.25.3

Average Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m25.42.43.456.98.38.98.57.35.642.82.1

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/m214.911.915.116.416.516.41717.617.416.313.710.110.4

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/m214.712.115.516.315.715.316.517.817.416.313.41010.5

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/m2136.39.713.11617.919.419.817.814.39.96.25.3

Maximum Daily Solar Radiation - Diffuse
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m25.62.53.65.37.18.598.77.65.94.22.82.2

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/m217.914.718.919.320.419.119.219.420.318.917.411.515.2

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/m219.515.721.120.322.720.621.121.522.920.518.611.816.5

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/m2115.48.611.612.715.31617.215.512.37.954.4

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/m25.12.22.84.76.388.68.26.75.23.62.71.8

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/m212.29.512.513.912.8141415.315.113.610.27.47.7

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/m210.6912.412.89.911.11113.413.3128.76.57.3




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