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Canada

CORNWALL, ONTARIO


Home > North America > Canada > Ontario
Elevation: 210 feet     Latitude: 45 00N     Longitude: 074 48W

WEATHER
 
CURRENT CONDITIONS

Sunrise/Set
05:38 am
08:12 pm
Local Time
3:08 am EDT
7 May, 2024
 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °C ]   °F
TEMPERATURE 
Average Temperature
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F45.716.720.330.144.65766.271.269.361.14937.624.8

Average High Temperature
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F53.824.1283853.466.775.780.678.369.856.543.831.1

Average Low Temperature
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F37.59.412.722.335.847.456.761.860.352.441.431.318.4

Highest Recorded Temperature
Years on Record: 56  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F97.764.464.478.886.991.49596.197.794.183.37568

Lowest Recorded Temperature
Years on Record: 56  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F-45.9-45.9-32.1-16.6521.933.137.935.12117.1-4-27.9

Average Number of Days Above 95F/35C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.1---------------------0.1------------

Average Number of Days Above 90F/32C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days9.4------------0.52.142.40.4---------

Average Number of Days Above 86F/30C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days11.7------------0.42.74.93.10.7---------

Average Number of Days Above 70F/21C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days119.9------0.43.21324.230.128.716.43.70.4---

Average Number of Days Above 50F/10C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days203.90.50.64.317.429.830313129.621.56.81.5

Average Number of Days Above 32F/0C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days295.29.59.921.729.431303131303126.114.7

Average Number of Days Below 35F/2C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days166.930.727.828.816.420.1------0.79.121.929.5

Average Number of Days Below 32F/0C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days141.229.626.525.110.90.5---------0.34.516.527.2

Average Number of Days Below 28F/-2C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days109.227.624.319.84.3---------------19.522.7

Average Number of Days Below 10F/-12C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days51.118.115.66.60.2------------------0.710

Average Number of Days Below -4F/-20C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days9.352.70.4------------------------1.2

Average Number of Days Below -22F/-30C
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.20.1---------------------------------



PRECIPITATION 
Average Precipitation
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in39.832.42.43.23.43.83.93.53.93.73.63

Average Number of Days With Precipitation
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days149.514.611.511.611.812.911.910.911.212.212.114.214.4

Most Precipitation Reported in a Day
Years on Record: 56  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in4.32.11.51.71.61.82.72.93.24.32.42.21.4

Avg. No. of Days w/Precip. Above 0.1in/2.5mm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days150.114.211.311.21213.811.911.411.11212.814.614

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days64.45.24.24.25.75.65.55.95.365.765.2

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days32.9221.72.93.13.43.433.4332.3

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days60.30.10.20.40.40.80.90.70.80.50.50.4



PRECIPITATION - RAIN 
Average Rainfall
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in32.71.10.91.22.83.43.83.93.53.93.63.11.5

Average Number of Rainy Days
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days114.93.93.85.71113.811.911.411.11212.612.15.7

Most Rain Reported in a Day
Years on Record: 56  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in4.31.51.51.51.31.82.72.93.24.32.42.21.4

Avg. No. of Days w/Rain Above 0.2in/5mm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days52.21.91.725.25.65.55.95.365.652.6

Avg. No. of Days w/Rain Above 0.4in/10mm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days27.810.70.92.533.43.433.42.92.51.2

Avg. No. of Days w/Rain Above 1in/25mm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days5.50.30.10.10.30.40.80.90.70.80.50.40.3



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in70.918.61512.54---------------0.55.614.6

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 
Days44.5129.16.72---------------0.4410.4

Average Snow Cover
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in1.86.16.94.50.3------------------0.23.7

Average Snow Cover at Month End
Years on Record: 19  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in1.56.44.61.2---------------------0.95.3

Deepest Snow Cover Reported
Years on Record: 19  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in2218.92217.311.8------------------9.815.7

Most Snow Reported in a Day
Years on Record: 56  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in212113.315143.5------------5.714.214

Avg. No. of Days w/Snow Above 1in/2.5cm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days41.711.58.56.61.9---------------0.33.49.5

Avg. No. of Days w/Snowfall Above 2in/5cm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days11.83.22.42.20.6---------------0.112.5

Avg. No. of Days w/Snow Above 3.9in/10cm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days4.91.11.20.90.4------------------0.50.9

Avg. No. of Days w/Snowfall Above 10in/25cm
Years on Record: 26  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.2------0.1---------------------------

Av. # of Days w/Snow Depth Above 0.4in/10mm
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days99.128.427.119.81.6------------------1.221

Avg. # of Days w/Snow Depth Above 2in/5cm
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days9025.924.617.81.3---------------------20.5

Av. # of Days w/Snow Depth Above 3.9in/10cm
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days74.522.12114.60.8---------------------16

Av. # of Days w/Snow Depth Above 7.8in/20cm
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days40.213.410.69.40.5---------------------6.3



DEGREE DAYS 
Heating Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days4233.7823.2722.5595.5346.5141.936.65.514.497.5277.3462.7710.1

Cooling Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days300.8---------1.314.857.3115.387.722.91.5------

Growing Degree Days
Years on Record: 123  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days1930------------155420589496270---------



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 
Hours12.89.81112.514.115.516.215.814.51311.410.19.4



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/m23.61.62.63.74.55.25.75.74.93.82.41.51.3

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/m21.50.60.91.31.82.32.42.321.51.10.70.5

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/m24.13.34.354.74.84.954.94.33.42.52.6

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/m24.23.44.554.84.85.15.454.33.32.52.8

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/m23.61.62.63.74.55.25.75.74.93.82.41.51.3

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/m21.50.611.41.92.32.52.42.11.61.10.70.6

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/m254.14.86.35.95.65.75.65.65.14.233.5

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/m25.64.35.26.96.96.56.96.76.35.44.43.14.1

Minimum Daily Solar Radiation - Global
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m231.42.13.33.64.24.85.14.13.11.81.21

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/m21.30.60.81.11.62.12.32.21.81.410.70.5

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/m23.32.83.14.23.63.84.24.53.93.42.21.91.8

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/m22.92.72.942.93.13.64.33.42.91.81.71.7




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