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Weather in Thunder Bay for July 2026

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

    Official Weather Alert ⚠️

  • Squall Warning - See hour by hour.

    • Temperatures

  • So far, July 2026 in Thunder Bay shows a warmer trend than usual by 4.4 °C.

  • Expect cooler weather in the next days in Thunder Bay with the forecast suggesting a temperature of 22.7 °C, lower than the historical average.

  • In general, the average temperature in Thunder Bay at the beginning of July is 22 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 23.6 °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 131.5 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
15
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/13°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Thunder Bay Weather July

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

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
 24° /13° 0.3 mm 6
2 Jul. Overcast
Overcast
 23° /13° 3.1 mm 6
3 Jul. Overcast
Overcast
 22° /12° 0.4 mm 6
4 Jul. Overcast
Overcast
 21° /11° 0.4 mm 6
5 Jul. Patchy rain possible
Patchy rain possible
 21° /12° 8.3 mm 6
6 Jul. Overcast
Overcast
 21° /12° 0 mm 6
7 Jul. Patchy rain possible
Patchy rain possible
 22° /12° 0.5 mm 6
8 Jul. Partly cloudy
Partly cloudy
 19° /12° 16.2 mm 5
9 Jul. Moderate rain at times
Moderate rain at times
 22° /12° 1.6 mm 6
10 Jul. Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /11° 2.1 mm 6
11 Jul. Cloudy
Cloudy
 21° /11° 0 mm 6
12 Jul. Overcast
Overcast
 25° /11° 7.9 mm 6
13 Jul. Sunny
Sunny
 27° /16° 0 mm 6
14 Jul. Cloudy
Cloudy
 28° /16° 0.2 mm 7
15 Jul. Patchy rain possible
Patchy rain possible
 21° /15° 7.6 mm 6
16 Jul. Partly cloudy
Partly cloudy
 20° /12° 0.3 mm 6
17 Jul. Heavy rain at times
Heavy rain at times
 20° /12° 5.6 mm 5
18 Jul. Patchy rain possible
Patchy rain possible
 23° /12° 0.4 mm 6
19 Jul. Sunny
Sunny
 22° /11° 6.3 mm 6
20 Jul. Sunny
Sunny
 29° /16° 5.3 mm 6.7
21 Jul. Patchy rain possible
Patchy rain possible
 18° /11° 0.6 mm 5.9
22 Jul. Sunny
Sunny
 23° /8° 0 mm 5.9
23 Jul. Partly cloudy
Partly cloudy
 25° /11° 0.1 mm 6.2
24 Jul. Partly cloudy
Partly cloudy
 19° /12° 0.9 mm 5
25 Jul. Patchy rain possible
Patchy rain possible
 27° /13° 2.7 mm 7
26 Jul. Patchy rain possible
Patchy rain possible
 26° /16° 3.9 mm 6
27 Jul. Sunny
Sunny
 22° /13° 0 mm 6
28 Jul. Sunny
Sunny
 21° /11° 0 mm 6
29 Jul. Sunny
Sunny
 20° /11° 0 mm 6
30 Jul. Sunny
Sunny
 22° /11° 0 mm 6
31 Jul. Sunny
Sunny
 27° /13° 0 mm 7
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 22° 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 131.5 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 💧
Typically, Thunder Bay has 16 rainy days in July with a total of 131.5 mm of rainfall.

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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