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Weather in Thetford-Mines for September 2025

Your guide to Thetford-Mines weather in September - trends and predictions
  • In general, the average temperature in Thetford-Mines at the beginning of September is 23.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.6 °C by the end of September.

  • Thetford-Mines sees moderate rainfall in September, averaging 10 rainy days.

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Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/9°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Thetford-Mines in September average weather

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Temperatures trend during September in Thetford-Mines

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
23° /6° 3.5 mm 5
2 Sept. Mist
Mist
18° /7° 0.4 mm 4
3 Sept. Fog
Fog
21° /7° 0 mm 5
4 Sept. Mist
Mist
25° /11° 0 mm 6
5 Sept. Fog
Fog
26° /14° 0 mm 6
6 Sept. Fog
Fog
26° /14° 0.8 mm 6
7 Sept. Fog
Fog
25° /14° 4.7 mm 6
8 Sept. Light rain shower
Light rain shower
18° /10° 4.5 mm 5
9 Sept. Fog
Fog
18° /8° 0 mm 4
10 Sept. Light rain shower
Light rain shower
15° /7° 3.6 mm 4
11 Sept. Fog
Fog
20° /9° 14.1 mm 5
12 Sept. Fog
Fog
21° /10° 0.3 mm 5
13 Sept. Light rain shower
Light rain shower
21° /12° 4.1 mm 5
14 Sept. Mist
Mist
20° /11° 0.1 mm 5
15 Sept. Fog
Fog
21° /7° 0 mm 5
16 Sept. Moderate rain
Moderate rain
20° /11° 6.8 mm 5
17 Sept. Fog
Fog
23° /11° 0.2 mm 6
18 Sept. Light rain shower
Light rain shower
21° /13° 1.3 mm 5
19 Sept. Heavy rain
Heavy rain
19° /11° 29.5 mm 4
20 Sept. Fog
Fog
17° /11° 0.1 mm 4
21 Sept. Mist
Mist
18° /8° 0 mm 4
22 Sept. Mist
Mist
19° /7° 0 mm 5
23 Sept. Mist
Mist
18° /9° 0 mm 4
24 Sept. Mist
Mist
19° /8° 0 mm 5
25 Sept. Cloudy
Cloudy
15° /8° 0 mm 4
26 Sept. Mist
Mist
15° /6° 60.2 mm 4
27 Sept. Sunny
Sunny
18° /8° 0 mm 5
28 Sept. Mist
Mist
18° /7° 0 mm 5
29 Sept. Mist
Mist
19° /8° 0 mm 5
30 Sept. Overcast
Overcast
19° /9° 0 mm 5
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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.

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 21° and cooler nights around 9°. 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 130 mm is expected in Thetford-Mines during September, occurring over more than 10 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 11 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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