Thunder Bay in may: average Weather, Temperature and Climate
Weather in Thunder Bay in may 2025
The weather in Thunder Bay in may comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout may
tolerable weather 25.4cm
Weather at 6am
43°F
Clear/Sunny
35% of time
27%
14%
12%
Weather at 12pm
54°F
Clear/Sunny
39% of time
28%
16%
12%
Weather at 6pm
52°F
Clear/Sunny
39% of time
27%
15%
9%
Weather at 3am
43°F
36%
23%
13%
12%
Evolution of daily average temperature and precipitation in Thunder Bay in may
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Thunder Bay in may.
The climate of Thunder Bay in may is tolerable
The weather in may in Thunder Bay is wet (with 3.9in of precipitation over 6 days). The weather's not getting better compared to the previous month since in april there is an average of 4.1in of precipitation over 6 days.
The climate is rather cold in that area this month, but it is bearable by dressing warm. The thermometer averaged maximum of 56°F. In the morning the temperature drops to 43°F. Thus, the mean temperature average in may in Thunder Bay is 49°F. Note that these seasonal averages are in contrast with those observed in Thunder Bay in may with a maximum record of 74°F in 2014 and a minimum record of 22°F in 2020. You can hope to have about 4 days with temperatures above 65°F, or 13% of time.
In may in Thunder Bay, the days on average last 15:14. The sun rises at 05:17 and sunset is at 20:31.
With a correct climate, the month of may is okay (but not the best) to go there.
Thunder Bay: another month?
If you can push back the dates of your trip, we advise you to go in june to Thunder Bay. more information
May: another location in Canada?
If you want to go to Canada in may, there are destinations with better weather than Thunder Bay:
In may, Ottawa, Quebec City, Toronto, Niagara Falls (Ontario), Brampton and Victoria have good weather.
Seasonal average climate and temperature of Thunder Bay in may
Check below seasonal norms These statistics are generated from the weather statements of the last years of may.
| May | |||||
| Outside temperature | |||||
| Average temperature | 49°F | ||||
| Highest temperature | 56°F | ||||
| Lowest temperature | 43°F | ||||
| Highest record temperature | 74°F (2014) | ||||
| Lowest record temperature | 22°F (2020) | ||||
| Number of days at +65°F | 4 day(s) (13%) | ||||
| Number of days at -32°F | 2 day(s) (6%) | ||||
| Wind | |||||
| Wind speed | 16km/h | ||||
| Wind temperature | 40°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.9in | ||||
| Number of days with rainfall | 6 day(s) (18%) | ||||
| Record daily rainfall | 2.5in (2013) | ||||
| Snowfall | 25.4cm | ||||
| Other climate data | |||||
| Humidity | 80% | ||||
| Visibility | 8.84km | ||||
| Cloud cover | 43% | ||||
| UV index | 3 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:17 | ||||
| Time of sunset | 20:31 | ||||
| Length of day | 15:14 | ||||
| Our opinion about the weather in may | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last may?
Here is the day by day recorded weather in Thunder Bay in may 2024:
38°F to 43°F
38°F to 43°F
40°F to 58°F
43°F to 50°F
38°F to 52°F
43°F to 54°F
41°F to 50°F
45°F to 52°F
38°F to 52°F
40°F to 52°F
41°F to 56°F
45°F to 65°F
41°F to 54°F
38°F to 54°F
43°F to 52°F
43°F to 47°F
47°F to 58°F
43°F to 54°F
47°F to 65°F
45°F to 56°F
45°F to 54°F
47°F to 50°F
43°F to 52°F
38°F to 45°F
43°F to 59°F
45°F to 50°F
47°F to 63°F
49°F to 54°F
41°F to 58°F
43°F to 58°F
47°F to 59°F
Map: other cities in Canada in may
Cities near Thunder Bay:
| Marathon in may | very bad weather |
| Dryden in may | tolerable weather |
| Sault Ste. Marie in may | tolerable weather |
| Red Lake in may | tolerable weather |
| Timmins in may | tolerable weather |
| Winnipeg (Manitoba) in may | tolerable weather |
| Greater Sudbury in may | tolerable weather |
| Bruce Peninsula in may | tolerable weather |
| Owen Sound in may | tolerable weather |
| North Bay in may | tolerable weather |
| Brandon in may | tolerable weather |
| Orillia in may | good weather |
Click over cities on the map for information about the weather in may.
Thunder Bay
perfect weather
good
tolerable
bad
very bad
Weather data for Thunder Bay in may:
Weather data for Thunder Bay for may are derived from an average of the weather forecast since 2009 in Thunder Bay. There is a margin of error and these forecasts are to be considered as general information only. The weather in Thunder Bay can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Thunder Bay.