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HAMILTON, ONTARIO


Home > North America > Canada > Ontario
Elevation: 236 meters     Latitude: 43 10N     Longitude: 079 55W

WEATHER
 
CURRENT CONDITIONS

Sunrise/Set
06:05 am
08:27 pm

Local Time
5:36 am EDT
6 May, 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  
C7.9-5.5-4.6-0.16.712.818.320.92015.89.33.7-2.3

Average High Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C12.7-1.7-0.54.311.818.523.926.525.321.214.17.51.2

Average Low Temperature
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C3.1-9.3-8.6-4.51.57.112.615.214.510.44.5-0.2-5.8

Highest Recorded Temperature
Years on Record: 51  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C37.416.715.82529.733.13537.436.434.430.324.420.7

Lowest Recorded Temperature
Years on Record: 51  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C-30-30-26.7-24.6-12.8-3.91.15.61.1-2.2-7.8-19.3-26.8

Average Number of Days Above 95F/35C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days0.2------------------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  
Days9.1------------0.424.31.90.5---------

Average Number of Days Above 86F/30C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days11.2------------0.534.72.40.6---------

Average Number of Days Above 70F/21C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days120.2------0.63.3112430.12917.94.10.1---

Average Number of Days Above 50F/10C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days210.50.90.75.717.329.230313129.9249.11.8

Average Number of Days Above 32F/0C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days309.112.313.423.729.431303131303127.918.4

Average Number of Days Below 35F/2C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days167.730.227.728.616.73.30.1------0.89.521.329.5

Average Number of Days Below 32F/0C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days138.428.426.224.611.20.9---------0.14.215.926.9

Average Number of Days Below 28F/-2C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days107.525.823.3205.6---------------1.29.821.8

Average Number of Days Below 10F/-12C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days37.713.511.35.10.1------------------0.47.2

Average Number of Days Below 0F/-17C
Years on Record: 12  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days832---------------------------1

Average Number of Days Below -4F/-20C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days3.32.10.70.1------------------------0.3

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



TEMPERATURE - WIND CHILL 
Avg. # of Days w/Wind Chill Below -4F/-20C
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days19.28.95.41.6---------------------0.13.3

Av. # of Days w/Wind Chill Below -22F/-30C
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1.410.4---------------------------0.1

Av. # of Days w/Wind Chill Below -40F/-40C
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days0.10.1---------------------------------

Lowest Reported Wind Chill
Years on Record: 41  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C-43-43-37-30.7-22.5-8----------4.6-10.9-22.8-33.9



TEMPERATURE - HUMIDEX 
Average No. Days w/Humidex Above 104F/40C
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days3------------0.10.21.71------------

Average No. Days w/Humidex Above 95F/35C
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days21.7------------0.65.476.91.60.2------

Average No. Days w/Humidex Above 86F/30C
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days53.8---------0.33.110.517.216.35.60.9------

Highest Reported Humidex
Years on Record: 41  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C49.117.616.527.733.440.543.749.147.640.637.725.124.5



PRECIPITATION 
Average Precipitation
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm929.86457.868.479.179.484.9100.779.281.977.484.373

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  
Days157.717.11414.413.512.211.110.610.411.612.514.615.8

Most Precipitation Reported in a Day
Years on Record: 51  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm10744.654.142.845.239.966.610790.859.49158.856.8

Avg. No. of Days w/Precip. Above 0.1in/2.5mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days156.216.613.813.613.112.611.211.310.31112.514.315.9

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days564.33.54.44.95.85.14.74.24.64.954.6

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days30.61.81.52.12.82.833.52.82.92.62.62.2

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days6.10.20.30.30.50.30.71.10.70.70.40.60.2



PRECIPITATION - RAIN 
Average Rainfall
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm791.729.728.242.671.378.784.9100.779.281.976.574.443.8

Average Number of Rainy Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days117.85.44.97.911.712.611.211.310.31112.511.27.9

Most Rain Reported in a Day
Years on Record: 51  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mm10739.354.14145.239.966.610790.859.49158.856.8

Avg. No. of Days w/Rain Above 0.2in/5mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days47.82.11.82.84.55.85.14.74.24.64.74.53

Avg. No. of Days w/Rain Above 0.4in/10mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days27.110.81.42.52.833.52.82.92.62.41.5

Avg. No. of Days w/Rain Above 1in/25mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days5.50.10.20.10.40.30.71.10.70.70.40.60.1



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm156.540.835.126.58.40.5------------0.71133.5

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  
Days55.715.211.48.42.80.1------------0.45.212.2

Average Snow Cover
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm2.59.710.14.60.6------------------0.64.1

Average Snow Cover at Month End
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm2.211.67.70.6---------------------0.55.4

Deepest Snow Cover Reported
Years on Record: 40  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm64596437393------------21750

Most Snow Reported in a Day
Years on Record: 51  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
cm43.243.230.42829.211------------23.621.535.6

Avg. No. of Days w/Snow Above 1in/2.5cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days54.214.511.68.12.70.1------------0.44.812

Avg. No. of Days w/Snowfall Above 2in/5cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days9.22.61.81.60.4------------------0.62.1

Avg. No. of Days w/Snow Above 3.9in/10cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days3.20.90.80.60.2------------------0.10.6

Avg. No. of Days w/Snowfall Above 10in/25cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days0.30.10.10.1---------------------------

Av. # of Days w/Snow Depth Above 0.4in/10mm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days81.323.222.113.91.9------------------3.616.6

Avg. # of Days w/Snow Depth Above 2in/5cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days5418.1169.30.9------------------1.48.3

Av. # of Days w/Snow Depth Above 3.9in/10cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days32.410.810.65.90.6------------------0.73.8

Av. # of Days w/Snow Depth Above 7.8in/20cm
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days13.94.84.72.30.3---------------------1.8



HUMIDITY 
Average Relative Humidity
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
%71747369656468687174757576

Average Morning Relative Humidity
Years on Record: 28  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
%86.484.383.682.981.38385.888.79292.489.986.985.8

Average Evening Relative Humidity
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
%65.375.472.16658.856.957.557.96162.365.673.376.3

Average Dew Point
Years on Record: 10  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
C3-7-6-316121413105----5



DEGREE DAYS 
Heating Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days2229.1412.7363.6315196.394.325.14.59.254.5153.2245.1355.7

Cooling Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days138.7---------0.66.825.651.940.712.60.5------

Growing Degree Days
Years on Record: 46  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1173.9------------68.9250361.7310183.3---------



BAROMETER 
Average Sea Level Pressure
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mbar1016.31017.4101810171015.71014.91014.51014.31016.21016.51017.41016.71017.3

Average Station Pressure
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mbar1006.91007.61008.41007.51006.21005.51005.31005.11007.11007.310081007.31007.8

Average Vapor Pressure
Years on Record: 11  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
mbar10.144.14.96.510.116.118.519.415.810.26.94.9



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  
Hours12.81011.112.51415.315.915.614.412.911.510.29.6

Avg. No. of Days Visibility Above 5.5m/9km
Years on Record: 8  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days7509.5577.3528.9615.2635.7665.3652.7667.5678.5654.6645590.8598

Avg. No. of Days Visibility Below 5.5m/9km
Years on Record: 8  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1064.4151.7133.1108.268.961.656.368.358.857.974.498.9126.4

Avg. No. of Days Visibility Below 0.6m/1km
Years on Record: 8  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days1931516.920.615.417.1118.36.87.524.630.319.6



WIND 
Average Wind Speed
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
km/h16.219.518.618.518.615.91412.611.813.115.617.418.7

Highest Reported Hourly Wind Speed
Years on Record: 41  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
km/h93898578897474565052679381

Highest Reported Wind Gust
Years on Record: 39  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
km/h133133122126119105102106969396115109

Avg. # of Days w/Wind Above 32 mph/52 km/h
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days27.53.433.43.2210.70.712.53.13.7

Avg. # of Days w/Wind Above 39 mph/63 km/h
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Days9.91.40.81.110.90.60.30.40.21.111.1

Average Primary Wind Direction
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
°2702252702704545225270225225225270225



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/m212.95.58.61215.718.621.121.118.214.49.65.64.6

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/m25.42.53.65.278.38.78.37.25.64.12.82.2

Average Daily Solar Radiation - Reflected
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC  
Mj/m214.41012.914.616.11718.418.817.916.413.18.88.5

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/m214.39.612.613.615.216.519.420.318.216.412.68.38.1

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/m212.95.58.61215.718.621.121.118.214.49.65.64.6

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/m25.62.53.75.37.18.598.77.55.94.22.82.2

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/m217.111.615.418.219.7202120.620.419.816.210.611.2

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/m218.711.615.919.121.322.425.524.223.12216.910.711.4

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/m210.64.77.49.513.415.216.917.316.511.37.93.93.5

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/m25.12.53.44.86.47.887.86.753.82.52.1

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/m211.37.710.210.813.513.914.815.416.112.210.25.35.5

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/m29.66.89.48.510.910.912.313.61510.18.644.8




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