Live Weather & Forecast
Weather in Thunder Bay
Ontario, Canada · Real-time conditions & 3-day outlook
-2°C
Feels like -5°C
29°F / Feels 24°F
Mist
Thunder Bay, Ontario
🌙 Nighttime
Updated: 2026-04-25 02:45
Humidity
100%
Wind
7.2 km/h NNW
Wind Gust
15.1 km/h
Pressure
1014 mb
Visibility
6.4 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
25%
Dew Point
0°C
Wind Degree
334°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
169.9 μg/m³
NO₂
1.9 μg/m³
O₃
71 μg/m³
SO₂
1.5 μg/m³
PM 2.5
4 μg/m³
PM 10
4.4 μg/m³
Today's Hourly Forecast
24-hour breakdown for Thunder Bay, Ontario
12 AM
3°
Clear
1 AM
2°
Clear
2 AM
-2°
Mist
3 AM
1°
Clear
4 AM
1°
Clear
5 AM
0°
Clear
6 AM
0°
Clear
7 AM
1°
Sunny
8 AM
2°
Mist
9 AM
4°
Mist
10 AM
6°
Sunny
11 AM
8°
Sunny
12 PM
9°
Sunny
1 PM
10°
Sunny
2 PM
11°
Partly Cloudy
3 PM
10°
Partly Cloudy
4 PM
11°
Patchy rain nearby
5 PM
11°
Sunny
6 PM
10°
Sunny
7 PM
9°
Sunny
8 PM
7°
Sunny
9 PM
5°
Sunny
10 PM
4°
Partly Cloudy
11 PM
4°
Clear
3-Day Forecast
Daily overview for Thunder Bay, Ontario
Today
Sunny
11°
/
0°
🌧️ 0% chance of rain
💧 Avg. humidity: 78%
💨 Max wind: 12.6 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 5.1
🌅 Sunrise: 06:48 AM
🌇 Sunset: 09:03 PM
🌙 Waxing Gibbous
🌑 Moon: 60% lit
Sun, Apr 26
Moderate rain
7°
/
2°
🌧️ 89% chance of rain
💧 Avg. humidity: 91%
💨 Max wind: 7.2 km/h
🌧️ Total precip: 6.27 mm
☀️ UV Index: 2.9
🌅 Sunrise: 06:46 AM
🌇 Sunset: 09:05 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit
Mon, Apr 27
Moderate rain
6°
/
2°
🌧️ 74% chance of rain
💧 Avg. humidity: 95%
💨 Max wind: 23.8 km/h
🌧️ Total precip: 18.4 mm
☀️ UV Index: 2.1
🌅 Sunrise: 06:45 AM
🌇 Sunset: 09:06 PM
🌙 Waxing Gibbous
🌑 Moon: 79% lit
Best Time to Visit Thunder Bay
Plan your trip to Thunder Bay, Canada around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Thunder Bay?
Current conditions in Thunder Bay: Mist, temperature -2°C, humidity 100%.
What is the best time to visit Thunder Bay?
The best time to visit Thunder Bay is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Thunder Bay?
Thunder Bay is located at approximately 48.4° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Thunder Bay?
The wettest period in Thunder Bay is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Thunder Bay?
For visits to Thunder Bay during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Thunder Bay in 2026?
View the 2026 public holidays for Thunder Bay on our Holidays page.
What are the GPS coordinates used for the weather forecast in Thunder Bay?
The weather forecast for Thunder Bay uses coordinates 48.4064, -89.2598.
What is the current temperature outside in Thunder Bay?
The current outdoor temperature in Thunder Bay is -2°C (28°F) with mist.
What is the hourly weather forecast for Thunder Bay today?
Today's hour-by-hour weather breakdown for Thunder Bay is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in Thunder Bay tomorrow hour by hour?
Tomorrow's forecast for Thunder Bay shows a high of 7°C and a low of 2°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Thunder Bay?
Rain is not expected in Thunder Bay today. Current forecast shows no significant rain probability.
Is it going to rain today in Thunder Bay?
No, rain is not forecast for Thunder Bay today. Current conditions show clear to partly cloudy skies.