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Canada weather

Weather in Thunder Bay for July 2026

Your guide to Thunder Bay weather in July - trends and predictions

    Temperatures

  • In general, the average temperature in Thunder Bay at the beginning of July is 20.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24.1 °C by the end of July.

    • Rain 🌧️

  • Thunder Bay in July brings notable rainfall, with an average of 16 rainy days and a total precipitation of 140.7 mm.

    • More

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Average dry days
15
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/13°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Thunder Bay Weather July

Move between months or click on a day
June
August
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
22°
2
Overcast
21°
3
Overcast
21°
4
Overcast
19°
5
Patchy rain possible
20°
6
Overcast
20°
7
Patchy rain possible
20°
8
Partly cloudy
17°
9
Moderate rain at times
21°
10
Moderate or heavy rain shower
19°
11
Cloudy
19°
12
Overcast
22°
13
Overcast
24°
14
Cloudy
26°
15
Patchy rain possible
19°
16
Patchy rain possible
19°
17
Heavy rain at times
20°
18
Patchy rain possible
21°
19
Moderate or heavy rain shower
21°
20
Moderate rain at times
22°
21
Cloudy
20°
22
Overcast
21°
23
Patchy rain possible
20°
24
Partly cloudy
22°
25
Overcast
25°
26
Moderate or heavy rain shower
24°
27
Fog
26°
28
Overcast
25°
29
Overcast
23°
30
Moderate rain at times
23°
31
Moderate rain at times
23°

Temperatures trend during July in Thunder Bay

See the weather trend as well as the moving average line

July weather in Thunder Bay day by day

Click on a date for more information
June August
Date Weather Temperatures Rain UV More
1 Jul. Patchy rain possible
Patchy rain possible
 22° /13° 0.3 mm 5
2 Jul. Overcast
Overcast
 21° /13° 4.1 mm 5
3 Jul. Overcast
Overcast
 21° /12° 0.5 mm 5
4 Jul. Overcast
Overcast
 19° /10° 0.5 mm 5
5 Jul. Patchy rain possible
Patchy rain possible
 20° /12° 11.1 mm 5
6 Jul. Overcast
Overcast
 20° /12° 0 mm 5
7 Jul. Patchy rain possible
Patchy rain possible
 20° /12° 0.5 mm 5
8 Jul. Partly cloudy
Partly cloudy
 17° /10° 21.6 mm 4
9 Jul. Moderate rain at times
Moderate rain at times
 21° /12° 2.2 mm 5
10 Jul. Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /10° 2.8 mm 4
11 Jul. Cloudy
Cloudy
 19° /11° 0 mm 4
12 Jul. Overcast
Overcast
 22° /11° 7.6 mm 5
13 Jul. Overcast
Overcast
 24° /14° 0 mm 5
14 Jul. Cloudy
Cloudy
 26° /14° 0.3 mm 6
15 Jul. Patchy rain possible
Patchy rain possible
 19° /13° 10.1 mm 4
16 Jul. Patchy rain possible
Patchy rain possible
 19° /11° 0.4 mm 5
17 Jul. Heavy rain at times
Heavy rain at times
 20° /11° 1.6 mm 5
18 Jul. Patchy rain possible
Patchy rain possible
 21° /11° 0.5 mm 5
19 Jul. Moderate or heavy rain shower
Moderate or heavy rain shower
 21° /11° 8.4 mm 5
20 Jul. Moderate rain at times
Moderate rain at times
 22° /12° 3.6 mm 5
21 Jul. Cloudy
Cloudy
 20° /11° 0 mm 5
22 Jul. Overcast
Overcast
 21° /12° 11.3 mm 5
23 Jul. Patchy rain possible
Patchy rain possible
 20° /12° 36.5 mm 5
24 Jul. Partly cloudy
Partly cloudy
 22° /12° 0 mm 6
25 Jul. Overcast
Overcast
 25° /13° 0 mm 6
26 Jul. Moderate or heavy rain shower
Moderate or heavy rain shower
 24° /13° 7.4 mm 6
27 Jul. Fog
Fog
 26° /15° 0.4 mm 6
28 Jul. Overcast
Overcast
 25° /16° 3 mm 6
29 Jul. Overcast
Overcast
 23° /16° 3.9 mm 5
30 Jul. Moderate rain at times
Moderate rain at times
 23° /13° 0.8 mm 5
31 Jul. Moderate rain at times
Moderate rain at times
 23° /14° 1.2 mm 5
Next
Important Notice
Our weather forecast for Thunder Bay in July is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Thunder Bay forecast closer to your planned date for the most up-to-date weather information.
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Thunder Bay in July - FAQ

What are the expected maximum and minimum temperatures in Thunder Bay during July?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Thunder Bay during July?
Significant rainfall exceeding 140.7 mm is expected in Thunder Bay during July, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Thunder Bay during July?
The average wind speed in Thunder Bay during July is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

July rainfall patterns in Thunder Bay

Explore the daily rainfall trends and prepare for Thunder Bays July weather 💧

UV exposure in Thunder Bay during July

Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️

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Location coordinates Where is Thunder Bay?

Get accurate weather forecasts for Thunder Bay, located at latitude 48.382 and longitude -89.25. Stay updated with localized weather information tailored for Thunder Bay.

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