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Canada weather

Weather in Thetford-Mines for September 2025

Your guide to Thetford-Mines weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Thetford-Mines is slightly cooler than the historical average by -1.6 °C.

  • Expect cooler weather in the next days in Thetford-Mines with the forecast suggesting a temperature of 18.6 °C, lower than the historical average.

  • In general, the average temperature in Thetford-Mines at the beginning of September is 22.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.3 °C by the end of September.

    • Rain 🌧️

  • With an average of 4 rainy days, Thetford-Mines experiences minimal rainfall in September.

    • More

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

Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/7°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Thetford-Mines Weather September

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

Temperatures trend during September in Thetford-Mines

See the weather trend as well as the moving average line

September weather in Thetford-Mines day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 23° /7° 2.3 mm 5
2 Sept. Mist
Mist
 19° /9° 1 mm 4
3 Sept. Fog
Fog
 21° /9° 1.1 mm 5
4 Sept. Mist
Mist
 25° /12° 0 mm 6
5 Sept. Mist
Mist
 25° /13° 0 mm 5
6 Sept. Fog
Fog
 24° /13° 12.7 mm 5
7 Sept. Fog
Fog
 22° /12° 3.1 mm 5
8 Sept. Light rain shower
Light rain shower
 17° /8° 3 mm 4
9 Sept. Fog
Fog
 19° /7° 0 mm 4
10 Sept. Light rain shower
Light rain shower
 18° /8° 2.4 mm 4
11 Sept. Fog
Fog
 19° /9° 9.4 mm 4
12 Sept. Fog
Fog
 19° /7° 0.2 mm 4
13 Sept. Light rain shower
Light rain shower
 20° /10° 2.7 mm 4
14 Sept. Fog
Fog
 19° /10° 0 mm 4
15 Sept. Fog
Fog
 20° /8° 0 mm 5
16 Sept. Partly cloudy
Partly cloudy
 23° /7° 0 mm 1.2
17 Sept. Partly cloudy
Partly cloudy
 22° /9° 0 mm 1.1
18 Sept. Patchy rain possible
Patchy rain possible
 23° /14° 1.7 mm 1.1
19 Sept. Patchy rain possible
Patchy rain possible
 13° /4° 2.4 mm 0.7
20 Sept. Sunny
Sunny
 12° /0° 0 mm 0
21 Sept. Sunny
Sunny
 19° /2° 0 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 20° /11° 0.3 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 27° /14° 1 mm 4
24 Sept. Partly cloudy
Partly cloudy
 23° /15° 0 mm 5
25 Sept. Sunny
Sunny
 19° /6° 0 mm 4
26 Sept. Sunny
Sunny
 13° /1° 0 mm 3
27 Sept. Sunny
Sunny
 14° /5° 0 mm 3
28 Sept. Sunny
Sunny
 17° /3° 0 mm 3
29 Sept. Sunny
Sunny
 16° /4° 0 mm 3
30 Sept. Overcast
Overcast
 19° /9° 0 mm 5
Next
Important Notice
Our weather forecast for Thetford-Mines in September 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 Thetford-Mines forecast closer to your planned date for the most up-to-date weather information.
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Thetford-Mines in September - FAQ

What are the expected maximum and minimum temperatures in Thetford-Mines during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Thetford-Mines during September?
Significant rainfall exceeding 310.1 mm is expected in Thetford-Mines during September, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Thetford-Mines during September?
The average wind speed in Thetford-Mines during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Thetford-Mines

Explore the daily rainfall trends and prepare for Thetford-Miness September weather 💧

UV exposure in Thetford-Mines during September

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

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Location coordinates Where is Thetford-Mines?

Get accurate weather forecasts for Thetford-Mines, located at latitude 46.094 and longitude -71.305. Stay updated with localized weather information tailored for Thetford-Mines.

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