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Canada weather

Weather in Lethbridge for September 2025

Your guide to Lethbridge weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Lethbridge has been nearly identical to the historical average, with a temperature of 26.7 °C (showing only a slight deviation of 0.3 °C).

  • The forecast for the next days in Lethbridge predicts temperatures to be around 26 °C, close to the historical average.

  • In general, the average temperature in Lethbridge at the beginning of September is 27 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °C by the end of September.

    • Rain 🌧️

  • Lethbridge experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 66.5 mm.

    • More

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

Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/9°
Temperatures
Average wind speed
24 km/h
Avg max wind
Average humidity
51 %
Avg humidity

Lethbridge Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
30°
2
Sunny
31°
3
Overcast
28°
4
Overcast
19°
5
Cloudy
24°
6
Sunny
28°
7
Sunny
29°
8
Thundery outbreaks possible
27°
9
Overcast
28°
10
Fog
25°
11
Cloudy
24°
12
Thundery outbreaks possible
23°
13
Thundery outbreaks possible
24°
14
Sunny
30°
15
Partly cloudy
22°
16
Sunny
27°
17
Sunny
31°
18
Sunny
27°
19
Sunny
27°
20
Sunny
31°
21
Sunny
29°
22
Sunny
21°
23
Sunny
24°
24
Sunny
31°
25
Patchy rain possible
33°
26
Patchy rain possible
17°
27
Patchy rain possible
17°
28
Sunny
20°
29
Patchy rain possible
19°
30
Moderate rain
14°

Temperatures trend during September in Lethbridge

See the weather trend as well as the moving average line

September weather in Lethbridge day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 30° /10° 0 mm 7
2 Sept. Sunny
Sunny
 31° /13° 0 mm 7
3 Sept. Overcast
Overcast
 28° /14° 0 mm 6
4 Sept. Overcast
Overcast
 19° /12° 0 mm 5
5 Sept. Cloudy
Cloudy
 24° /7° 0 mm 6
6 Sept. Sunny
Sunny
 28° /8° 0 mm 7
7 Sept. Sunny
Sunny
 29° /11° 0 mm 7
8 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 27° /13° 0 mm 6
9 Sept. Overcast
Overcast
 28° /12° 0 mm 6
10 Sept. Fog
Fog
 25° /10° 0 mm 6
11 Sept. Cloudy
Cloudy
 24° /10° 4.7 mm 5
12 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 23° /11° 5.8 mm 5
13 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 24° /10° 2.2 mm 5
14 Sept. Sunny
Sunny
 30° /10° 0 mm 1.1
15 Sept. Partly cloudy
Partly cloudy
 22° /14° 0 mm 0.6
16 Sept. Sunny
Sunny
 27° /12° 0 mm 0.9
17 Sept. Sunny
Sunny
 31° /7° 0 mm 1.1
18 Sept. Sunny
Sunny
 27° /14° 0 mm 0
19 Sept. Sunny
Sunny
 27° /13° 0 mm 5
20 Sept. Sunny
Sunny
 31° /14° 0 mm 6
21 Sept. Sunny
Sunny
 29° /18° 0 mm 6
22 Sept. Sunny
Sunny
 21° /16° 0 mm 5
23 Sept. Sunny
Sunny
 24° /7° 0 mm 4
24 Sept. Sunny
Sunny
 31° /13° 0 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 33° /17° 0.2 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 0.2 mm 3
27 Sept. Patchy rain possible
Patchy rain possible
 17° /5° 0.3 mm 3
28 Sept. Sunny
Sunny
 20° /5° 0 mm 5
29 Sept. Patchy rain possible
Patchy rain possible
 19° /4° 1.7 mm 5
30 Sept. Moderate rain
Moderate rain
 14° /5° 12.6 mm 4
Next
Important Notice
Our weather forecast for Lethbridge 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 Lethbridge forecast closer to your planned date for the most up-to-date weather information.
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Lethbridge in September - FAQ

What are the expected maximum and minimum temperatures in Lethbridge during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Lethbridge during September?
Moderate rainfall is anticipated in Lethbridge during September, with a total of 66.5 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Lethbridge during September?
The average wind speed in Lethbridge during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Lethbridge

Explore the daily rainfall trends and prepare for Lethbridges September weather 💧

UV exposure in Lethbridge during September

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

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Location coordinates Where is Lethbridge?

Get accurate weather forecasts for Lethbridge, located at latitude 49.7 and longitude -112.819. Stay updated with localized weather information tailored for Lethbridge.

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