Thunder Bay Weather Conditions
Current Temperature Level
Thunder Bay Weather Conditions
Current Temperature Level
Feels Like 18°C
Chances of Rain27%
18°27%9 AM
18°10%10 AM19°7%11 AM21°7%12 PM
21°8%1 PM22°5%2 PM23°5%3 PM23°4%4 PM23°3%5 PM24°2%6 PM22°1%7 PM21°2%8 PM19°3%9 PM15°4%10 PM
13°5%11 PM12°5%12 AM12°5%1 AM11°5%2 AM11°5%3 AM11°6%4 AM10°6%5 AM10°6%6 AM10°6%7 AM10°6%Light rain may develop in some areas.
Last Updated: 2026-08-04 08:30 (Local Time)
273°W
Direction
12.2km/h
Wind Speed
Gust Speed
5.8m/s
Precipitation
Precipitation
0.05mm
Pressure
1007mb
UV Index
0.1Low
Today
19
°C
67%Wednesday
16
°C55%Thursday
19
°C55%Friday
19
°C61%Saturday
16
°C81%Sunday
18
°C68%Monday
15
°C67%Tuesday
12
°C89%Wednesday
19
°C70%Thursday
18
°C73%Sunny
Clear Sky with temperature at 19 °C and humidity will be at 67% with 19.8 km/h winds.24°C / 12°C
Humi.67 %
Prec.1.52 mm
Sunrise
06:36 AM14hrs 54min
Sunset
09:30 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Clear
17 °C
93 %
0
4.7 kmph / ENE
Clear
Feels 18 °C
Cover 19 %
Visibility 10 km
1 AM
Clear
17 °C
83 %
0
6.8 kmph / ENE
ClearFeels 17 °C
Cover 0 %
Visibility 10 km
2 AM
Clear
16 °C
75 %
0
6.8 kmph / ESE
ClearFeels 16 °C
Cover 0 %
Visibility 10 km
3 AM
Clear
16 °C
82 %
0
3.6 kmph / SE
ClearFeels 16 °C
Cover 0 %
Visibility 10 km
4 AM
Clear
17 °C
78 %
0
5.4 kmph / SSE
ClearFeels 16 °C
Cover 0 %
Visibility 10 km
5 AM
Clear
17 °C
82 %
0
12.6 kmph / SSW
ClearFeels 16 °C
Cover 0 %
Visibility 5 km
6 AM
Patchy rain nearby
17 °C
91 %
0
11.5 kmph / SSW
Patchy rain nearbyFeels 17 °C
Cover 85 %
Visibility 10 km
7 AM
Patchy rain nearby
19 °C
87 %
0
14 kmph / SW
Patchy rain nearbyFeels 18 °C
Cover 92 %
Visibility 10 km
8 AM
Patchy rain nearby
18 °C
81 %
0.1
12.2 kmph / W
Patchy rain nearbyFeels 18 °C
Cover 89 %
Visibility 9 km
9 AM
Sunny
18 °C
79 %
0.3
18.7 kmph / NW
SunnyFeels 16 °C
Cover 23 %
Visibility 10 km
10 AM
Sunny
19 °C
74 %
0.9
17.3 kmph / NW
SunnyFeels 17 °C
Cover 5 %
Visibility 10 km
11 AM
Sunny
21 °C
73 %
1.8
18.4 kmph / NW
SunnyFeels 19 °C
Cover 4 %
Visibility 10 km
12 PM
Partly Cloudy
21 °C
65 %
3.9
16.9 kmph / WNW
Partly CloudyFeels 19 °C
Cover 45 %
Visibility 10 km
1 PM
Partly Cloudy
22 °C
59 %
5.2
18.4 kmph / W
Partly CloudyFeels 19 °C
Cover 28 %
Visibility 10 km
2 PM
Partly Cloudy
23 °C
54 %
6.1
19.8 kmph / W
Partly CloudyFeels 20 °C
Cover 41 %
Visibility 10 km
3 PM
Partly Cloudy
23 °C
51 %
6.3
18.7 kmph / WNW
Partly CloudyFeels 20 °C
Cover 33 %
Visibility 10 km
4 PM
Partly Cloudy
23 °C
45 %
5.2
18.7 kmph / WNW
Partly CloudyFeels 20 °C
Cover 30 %
Visibility 10 km
5 PM
Partly Cloudy
24 °C
42 %
3.6
19.4 kmph / WNW
Partly CloudyFeels 20 °C
Cover 25 %
Visibility 10 km
6 PM
Sunny
22 °C
38 %
2.1
19.4 kmph / NW
SunnyFeels 18 °C
Cover 12 %
Visibility 10 km
7 PM
Sunny
21 °C
44 %
0.9
17.6 kmph / NW
SunnyFeels 17 °C
Cover 17 %
Visibility 10 km
8 PM
Sunny
19 °C
50 %
0.3
16.9 kmph / NNW
SunnyFeels 15 °C
Cover 15 %
Visibility 10 km
9 PM
Sunny
15 °C
61 %
0
8.3 kmph / NNW
SunnyFeels 13 °C
Cover 11 %
Visibility 10 km
10 PM
Clear
13 °C
63 %
0
5 kmph / WNW
ClearFeels 12 °C
Cover 10 %
Visibility 10 km
11 PM
Clear
12 °C
65 %
0
6.5 kmph / W
ClearFeels 11 °C
Cover 8 %
Visibility 10 km
28°15°28°11°30°12°23°14°23°10°27°12°23°11°
18°12°23°13°22°11°23°14°23°14°22°15°22°14°23°14°22°15°
21°14°21°14°22°14°21°14°21°13°21°13°22°14°21°14°21°14°21°13°21°13°20°13°21°13°22°14°21°14°AugustWeather Overview
No. of days:
Sunny
9
Cloudy
0
Rainy
21
Snowy
0
The monthly weather averages in Thunder Bay consist of 9 sunny days, 0 cloudy days, 21 rainy days, and 0 snowy days.
Thunder Bay's Locations Weather Conditions
Canada's Hottest Cities - August 2026
1.
Cape Breton, Nova Scotia
23 °C
Overcast
82%
0.6
32.4 kmph / SSW
2.
Sydney, Nova Scotia
23 °C
Overcast
82%
0.6
32.4 kmph / SSW
3.
New Glasgow, Nova Scotia
22 °C
Sunny
94%
1.5
32.4 kmph / SW
4.
Pictou, Nova Scotia
22 °C
Sunny
94%
1.5
32.4 kmph / SW
5.
Fredericton, New Brunswick
21 °C
Sunny
64%
1.6
25.6 kmph / WSW
6.
Saint Peters Bay, Prince Edward Island
21 °C
Cloudy
80%
0.8
46.8 kmph / SW
7.
Antigonish, Nova Scotia
21 °C
Patchy rain nearby
94%
0.3
35.3 kmph / SSW
8.
Port Hawkesbury, Nova Scotia
21 °C
Patchy rain nearby
94%
0.3
35.3 kmph / SSW
9.
Halifax, Nova Scotia
21 °C
Sunny
74%
1.2
26.6 kmph / SW
10.
Lake Loon, Nova Scotia
21 °C
Sunny
74%
1.3
25.9 kmph / SW
Last Updated: 04 Aug 2026, 12:37 PM
City Weather RankingsFAQs About Thunder Bay Weather Conditions
1. What is the current temperature in Thunder Bay today - 04 August 2026?
1. What is the current temperature in Thunder Bay today - 04 August 2026?
The current temperature in Thunder Bay is 18°C, with a feels-like temperature of 18°C. Today's forecast shows a high of 24°C and a low of 12°C, giving a 12 degree swing through the day as of 08:30 AM 04 August 2026.
2. What are the current weather parameters in Thunder Bay today?
2. What are the current weather parameters in Thunder Bay today?
Here is a complete overview of Thunder Bay's current weather conditions as of 08:30 AM 04 August 2026: Condition : Patchy rain nearby Temperature : 18°C Cool (Feels like 18°C) Humidity : 81% Wind Speed : 12.2 km/h from W (273 degrees), Gust 5.9 m/s UV Index : 0.1 (Low Air Pressure : 1007 mb Cloud Cover : 89% Visibility : 9 km Precipitation : 0.05 mm (57% chance of rain)
3. What is the 10-day weather forecast for Thunder Bay from 08:30 AM 04 August 2026?
3. What is the 10-day weather forecast for Thunder Bay from 08:30 AM 04 August 2026?
From 08:30 AM 04 August 2026, Thunder Bay's 10-day forecast shows this trend: Today (Aug. 4) : Temp. 19°C, Hum. 67% and Sunny condition. Wednesday (Aug. 5) : Temp. 16°C, Hum. 55% and Sunny condition. Thursday (Aug. 6) : Temp. 19°C, Hum. 55% and Sunny condition. Friday (Aug. 7) : Temp. 19°C, Hum. 61% and Sunny condition. Saturday (Aug. 8) : Temp. 16°C, Hum. 81% and Sunny condition. Sunday (Aug. 9) : Temp. 18°C, Hum. 68% and Sunny condition. Monday (Aug. 10) : Temp. 15°C, Hum. 67% and Sunny condition. Tuesday (Aug. 11) : Temp. 12°C, Hum. 89% and Mist condition. Wednesday (Aug. 12) : Temp. 19°C, Hum. 70% and Rain condition. Thursday (Aug. 13) : Temp. 18°C, Hum. 73% and Rain Showers condition.
4. Will it rain in Thunder Bay today?
4. Will it rain in Thunder Bay today?
As of 08:30 AM 04 August 2026, yes — Thunder Bay is currently experiencing rainfall with 0.05 mm of precipitation. This is expected to temporarily improve AQI by washing pollutants out of the atmosphere.
5. What is the monthly weather forecast for Thunder Bay in August 2026?
5. What is the monthly weather forecast for Thunder Bay in August 2026?
August 2026 in Thunder Bay is forecast to have 9 sunny days, 21 rainy days, 0 cloudy days, and 0 snowy days. Temperatures for the month range from lows around 10°C to highs of 30°C.
6. How does the weather in Thunder Bay affect air quality?
6. How does the weather in Thunder Bay affect air quality?
Weather directly impacts air quality in Thunder Bay. Calm winds, high humidity, fog, and high pressure trap pollutants near the ground, worsening AQI. Strong winds, rainfall, and low pressure help disperse them. Rising temperatures and UV levels intensify ozone and smog formation, while poor visibility signals elevated particulate matter. Monitoring weather alongside AQI gives the clearest picture of outdoor safety.
