World Resorts Canada Thunder Bay

Thunder Bay Monthly Weather Averages

Please click on any column to get detailed information about Thunder Bay weather in that particular month. You will get daily weather information for that month for the last several years.

Day & Night air temperature, °F

The warmest month in Thunder Bay is july. The average daily temp is 69.3°F. The average nightly temp is 58.5°F.

Sea water temperature, °F

The warmest sea temperature usually observed in August. Average daily sea water temperature during this month is 63.4°F.

Precipitation total, in.

January is the month with least precipitations during the year. The average precipitation totals for this month is 0.3 in. The month with most precipitation total is April.

Number of rainy days

This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.

Wind speed, mph
Sunny, partly cloudy and cloudy days
Average sunny hours

Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

* Charts above show average data for the last 3 years.

Best time for vacation in Thunder Bay

Sunniest months:
September 15 days
August 14 days
July 12 days
Warmest months:
July 69.3 °F
August 68.9 °F
June 62.8 °F
Warmest sea temp:
August 63.5 °F
September 60.2 °F
July 59.3 °F
Coldest months:
February 14.2 °F
January 15.0 °F
December 22.1 °F
Rainiest months:
August 3 days
September 2 days
April 2 days
Windiest months:
November 9.7 mph
December 9.2 mph
April 9.1 mph

Thunder Bay on a weather map

Thunder Bay
+39°F
S 17 mph
Feels like: +30°F
Precip.: 0%
Places in Canada:
Name
°F
+43°F
+46°F
+30°F
+43°F
+30°F
-13°F
+37°F
+39°F
+43°F
+41°F
+41°F
+45°F
+39°F
+39°F
24 Hours Forecast
Thunder Bay
Local time: 05:58
November 21, thursday
0600
39°F
S
17 mph
0900
41°F
S
19 mph
1200
41°F
S
17 mph
1500
43°F
S
16 mph
1800
41°F
S
13 mph
2100
39°F
S
13 mph
November 22, friday
0000
39°F
S
11 mph
0300
37°F
SE
11 mph
Units of measurement: °C / °F