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THUNDER BAY AIRPORT, ONTARIO


Home > North America > Canada > Ontario
Elevation: 653 feet     Latitude: 48 22N     Longitude: 89 19W

WEATHER
 
CURRENT CONDITIONS

Sunrise/Set
08:42 am
06:39 pm

Local Time
7:06 pm EDT
31 October, 2024
 
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MONTHLY - ALL WEATHER AVERAGES   [ Show Summary ]
[ °C ]   °F
TEMPERATURE 
Average Temperature
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F36.86.211.622.937.448.65763.962.45340.226.312.6

Average High Temperature
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F47.717.62333.148.661.16975.87463.949.934.522.1

Average Low Temperature
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F25.9-5.10.212.826.23644.95250.74230.418.13.1

Highest Recorded Temperature
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F104.546.9547382.995.496.199104.589.182.971.154

Lowest Recorded Temperature
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F-42-42-40-34.1-81627323017.18.1-23.1-36

Average Number of Days Above 95F/35C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.3------------0.1---0.20.1------------

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 
Days5.8------------0.70.92.51.50.2---------

Average Number of Days Above 86F/30C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days6.3------------0.60.82.91.80.2---------

Average Number of Days Above 70F/21C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days85.5---------1.17.516.325.824.19.61.1------

Average Number of Days Above 50F/10C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days176.8---0.11.112.526.729.831312814.42.10.1

Average Number of Days Above 32F/0C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days269.34.87.418.728.7313031313030.818.27.7

Average Number of Days Below 35F/2C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days227.33128.330.827.715.42.3---0.18.323.628.930.9

Average Number of Days Below 32F/0C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days203.430.927.829.523.211.20.4------4.118.827.530.1

Average Number of Days Below 28F/-2C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days175.230.526.627.518.14.7---------1.712.923.929.3

Average Number of Days Below 10F/-12C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days97.52720.914.52---------------0.410.122.6

Average Number of Days Below -4F/-20C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days45.217.112.24.30.1------------------0.910.6

Average Number of Days Below -22F/-30C
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days7.93.92.30.4------------------------1.3



TEMPERATURE - WIND CHILL 
Avg. # of Days w/Wind Chill Below -4F/-20C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days7122.217.69.30.8------------------4.116.9

Av. # of Days w/Wind Chill Below -22F/-30C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days29.912.38.22.4---------------------0.36.7

Av. # of Days w/Wind Chill Below -40F/-40C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days52.91.10.2------------------------0.8

Lowest Reported Wind Chill
Years on Record: 58  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F-72.8-72.8-65.2-44.8-25.52.821.63224.712.6-5-40-57.5



TEMPERATURE - HUMIDEX 
Average No. Days w/Humidex Above 104F/40C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days1.2---------------0.10.60.40.1---------

Average No. Days w/Humidex Above 95F/35C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days6.8------------0.10.83.12.40.4---------

Average No. Days w/Humidex Above 86F/30C
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days24------------0.739.68.62.2---------

Highest Reported Humidex
Years on Record: 58  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
F115.148.659.773.285.5101.6109.5115.1113.7106.190.271.153.2



PRECIPITATION 
Average Precipitation
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in26.910.81.22.12.63.33.43.52.92.52.11.4

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 
Days139.511.91010.98.810.513.412.712.613.311.711.612.3

Most Precipitation Reported in a Day
Years on Record: 63  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in5.221.31.64.631.92.13.45.21.92.51.7

Avg. No. of Days w/Precip. Above 0.1in/2.5mm
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days142.9129.510.39.511.513.812.912.313.712.912.112.4

Avg. No. of Days w/Precip. Above 0.2in/5mm
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days40.31.411.92.74.15.65.35.14.14.12.91.9

Avg. # of Days w/Precip. Above 0.4in/10mm
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days20.40.20.30.81.52.22.52.92.92.12.21.80.9

Avg. No. of Days w/Precip. Above 1in/25mm
Years on Record: 24  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days4.30.10.10.10.30.50.40.710.60.30.30.1



PRECIPITATION - RAIN 
Average Rainfall
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in21.3---0.10.61.42.63.33.23.52.82.21.20.2

Average Number of Rainy Days
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days90.70.61.13.47.11113.511.711.813.5114.71.2

Most Rain Reported in a Day
Years on Record: 62  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in5.210.71.12.731.92.13.45.21.92.51.7

Avg. No. of Days w/Rain Above 0.2in/5mm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days33.3---0.11.12.24.25.74.95.14.23.61.70.4

Avg. No. of Days w/Rain Above 0.4in/10mm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days17.3---0.10.61.12.22.62.72.92.21.710.2

Avg. No. of Days w/Rain Above 1in/25mm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days4---------0.20.40.50.71.10.50.30.30.1



PRECIPITATION - SNOW 
Average Snowfall
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in64.114.48.37.24.10.4---------0.43.710.415.3

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 
Days61.312.610.39.43.90.6---------0.12.39.113.1

Average Snow Cover
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in2.810.710.160.7------------------1.15.4

Average Snow Cover at Month End
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in311.59.21.60.1---------------0.13.69.6

Deepest Snow Cover Reported
Years on Record: 49  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in70.570.556.350.825.22------------3.123.239.8

Most Snow Reported in a Day
Years on Record: 62  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
in20.320.313.214.99.58.5---------3.66.413.616.5

Avg. No. of Days w/Snow Above 1in/2.5cm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days62.512.99.68.440.5---------0.33.49.713.9

Avg. No. of Days w/Snowfall Above 2in/5cm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days9.92.11.21.10.50.1---------0.10.61.62.7

Avg. No. of Days w/Snow Above 3.9in/10cm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days3.50.90.40.20.2---------------0.20.61

Avg. No. of Days w/Snowfall Above 10in/25cm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days0.10.1---------------------------------

Av. # of Days w/Snow Depth Above 0.4in/10mm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days126.529.128.226.150.1------------1.111.924.9

Avg. # of Days w/Snow Depth Above 2in/5cm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days102.727.628.221.22.5---------------0.14.219.1

Av. # of Days w/Snow Depth Above 3.9in/10cm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days86.425.826.614.92------------------2.614.5

Av. # of Days w/Snow Depth Above 7.8in/20cm
Years on Record: 23  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days6523.319.29.91.3------------------0.910.5



HUMIDITY 
Average Morning Relative Humidity
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%8474.274.177.479.885.690.592.794.192.187.281.978.3

Average Evening Relative Humidity
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%59.263.459.55648.550.957.659.259.261.26265.667.4



DEGREE DAYS 
Heating Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days5717.71017.5848.9727.4454.6266.4127.344.567.9212.4404.1630916.7

Cooling Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days70------------1.97.132.425.23.4---------

Growing Degree Days
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days1063.6---------------216424.7368.954---------



BAROMETER 
Average Sea Level Pressure
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
InHg30303030.130303029.93030303030

Average Station Pressure
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
InHg29.329.329.329.329.329.329.329.329.329.329.329.329.3

Average Vapor Pressure
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
InHg0.10.10.10.10.10.20.30.40.50.50.40.30.2



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 
Hours12.89.510.812.514.315.916.716.314.813.111.39.89

Average Monthly Sunshine
Years on Record: 15  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Hours2120.5109.6126.7159.8213259262268.1255.9163.8125.486.291.2

Average Number of Days with Sun
Years on Record: 15  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days304.822.422.524.926.627.928.329.729.325.925.620.321.4

Average Possibility of Sunshine
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
%46.741.946.543.253.556.25558.458.24337.931.935.2

Most Sunshine Reported in a Day
Years on Record: 28  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Hours15.69.210.611.81415.315.615.514.513.110.69.58.3

Avg. No. of Days Visibility Above 5.5m/9km
Years on Record: 29  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days7845.4643.5595653.5657678.3653.4684.4676.2658.8671.5630.6643.4

Avg. No. of Days Visibility Below 5.5m/9km
Years on Record: 29  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days805.993.876.477.852.855.954.748.954.650.564.68294.1

Avg. No. of Days Visibility Below 0.6m/1km
Years on Record: 29  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days113.76.75.712.810.39.811.910.713.210.787.46.6



WIND 
Average Wind Speed
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
mph7.37.47.27.6887.16.56.26.77.47.67.4

Highest Reported Hourly Wind Speed
Years on Record: 58  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
mph49.742.344.147.242.344.739.84649.739.842.349.739.8

Highest Reported Wind Gust
Years on Record: 34  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
mph75.865.965.275.865.260.972.170.265.96975.270.860.9

Avg. # of Days w/Wind Above 32 mph/52 km/h
Years on Record: 13  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days7.410.21.30.60.40.70.6---0.70.90.80.3

Avg. # of Days w/Wind Above 39 mph/63 km/h
Years on Record: 13  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
Days1.10.2---0.20.20.20.1------0.10.20.1---

Average Primary Wind Direction
Years on Record: 30  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
°270270270270909090270270270270270270



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/m23.51.32.23.54.75.55.85.64.93.52.31.31

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/m21.70.81.21.72.12.52.72.62.21.71.20.80.6

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/m23.92.23.44.655.1554.843.12.21.9

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/m23.62344.85.15.15.14.73.62.81.81.6

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/m23.51.32.23.54.75.55.85.64.93.52.31.31

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/m21.70.91.21.82.22.52.72.62.31.81.30.90.7

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/m24.52.73.85.26.165.65.65.84.73.82.62.2

Maximum Daily Solar Radiation - Direct
Years on Record: 22  Chart This
 ANNUAL  JAN  FEB  MAR  APR  MAY  JUN  JUL  AUG  SEP  OCT  NOV  DEC 
kWh/m24.62.53.44.66.46.86.36.36.24.53.62.11.9

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/m22.91.21.93.13.84.74.84.84.42.81.910.8

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/m21.60.711.62.12.52.62.52.21.61.10.70.6

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/m23.222.943.84.34.24.24.33.12.51.71.4

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/m22.71.72.53.233.63.53.63.82.52.21.31.2




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