The climate of Thunder Bay (Canada)
Thunder Bay was formed through the merger of Fort William and Port
Arthur. The city owes its name to a referendum in which the citizens
could choose the name of their city. The climate of Thunder Bay is
influenced by Lake Superior. Because of the influence of the water
summers are colder and winters are warmer than in other places.
Temperatures are between -14 and 17 degrees Celsius on average. When
there is a fierce wind temperatures may drop, especially when a cold
current comes from the polar region. Thunder Bay is a sunny city with
about 2,100 hours of sunshine per year, most of which occur during
summer.
Climate information
The figures below are based on long term weather and climate records.
They are an average for Thunder Bay:
average maximum
temperature (°C)
average
minimum
temperature (°C)
average
hours of sunshine
per day
average days with
precipitation
per month
average
mm precipitation
per month
average
sea
temperature (°C)
January
-9
-21
4
11
2
February
-6
-19
5
9
2
March
0
-12
5
10
2
April
8
-3
7
9
2
May
15
2
8
11
3
June
20
7
9
13
4
July
24
11
10
14
7
August
22
10
8
13
13
September
17
6
5
13
13
October
10
1
4
12
8
November
2
-7
3
10
5
December
-6
-16
3
12
4
= 0-5 mm ●
= 6-30 mm ●
= 31-60 mm ●
= 61-100 mm ●
= 101-200 mm ●
=
over 200 mm = 0-0.2 inches ● = 0.2-1.2 inches ● = 1.2-2.4 inches ● = 2.5-4 inches ● = 4.1-8 inches ● = over 8 inches
More climate information
Climate figures are very useful but don’t present a general impression
of the climate and the eventual weather circumstances within a certain
period. The figures don’t always reflect the chance of wintry weather,
extreme heat or hurricanes. That is why we offer useful extra climate
information for each month of the year:
Disclaimer
The information at this site was carefully composed from climate data collected by meteorological services, meteorological offices, climate experts and other sources. “More climate info” is based on statistics, climate data and personal experience. No rights can be derived from this site. Weather has no memory and gives no guaranties. Nothing is as changeable and unpredictable as the weather. The authors of this site feel in no way responsible for any damages caused by misinterpretation or other circumstances that may influence your holiday or trip to a certain destination. We provide information, it’s up to the reader to use it to it’s benefit.
this site in Dutch
= 0-5 mm ●
= 6-30 mm ●
= 31-60 mm ●
= 61-100 mm ●
= 101-200 mm ●
=
over 200 mm
