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Weather in Red Deer for September 2025

Your guide to Red Deer weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Water Supply - See hour by hour.

    • Temperatures

  • So far, September 2025 in Red Deer is slightly warmer than the historical average by 1 °C.

  • Expect cooler weather in the next days in Red Deer with the forecast suggesting a temperature of 21.6 °C, lower than the historical average.

  • In general, the average temperature in Red Deer at the beginning of September is 23.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.9 °C by the end of September.

    • Rain 🌧️

  • Red Deer experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 53.3 mm.

    • More

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

Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/7°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
62 %
Avg humidity

Red Deer Weather September

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

Temperatures trend during September in Red Deer

See the weather trend as well as the moving average line

September weather in Red Deer day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 26° /11° 2.4 mm 6
2 Sept. Partly cloudy
Partly cloudy
 26° /10° 0.1 mm 6
3 Sept. Overcast
Overcast
 25° /10° 0.1 mm 6
4 Sept. Overcast
Overcast
 16° /7° 0 mm 4
5 Sept. Sunny
Sunny
 22° /5° 0.4 mm 5
6 Sept. Fog
Fog
 25° /7° 0.1 mm 6
7 Sept. Light rain shower
Light rain shower
 27° /8° 1.7 mm 6
8 Sept. Cloudy
Cloudy
 25° /11° 0 mm 6
9 Sept. Sunny
Sunny
 24° /9° 0 mm 6
10 Sept. Sunny
Sunny
 21° /8° 0.2 mm 5
11 Sept. Overcast
Overcast
 23° /8° 2.1 mm 5
12 Sept. Overcast
Overcast
 21° /10° 1.6 mm 5
13 Sept. Cloudy
Cloudy
 23° /10° 0.5 mm 5
14 Sept. Sunny
Sunny
 29° /8° 0 mm 0.9
15 Sept. Sunny
Sunny
 25° /11° 0 mm 0.5
16 Sept. Sunny
Sunny
 23° /6° 0 mm 1
17 Sept. Sunny
Sunny
 26° /9° 0 mm 1
18 Sept. Sunny
Sunny
 22° /8° 0 mm 0
19 Sept. Sunny
Sunny
 21° /8° 0 mm 4
20 Sept. Sunny
Sunny
 26° /10° 0 mm 5
21 Sept. Sunny
Sunny
 28° /11° 0 mm 5
22 Sept. Sunny
Sunny
 24° /14° 0 mm 5
23 Sept. Sunny
Sunny
 19° /9° 0 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 20° /9° 2.1 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 14° /4° 0.1 mm 2
26 Sept. Patchy rain possible
Patchy rain possible
 14° /4° 1 mm 2
27 Sept. Patchy rain possible
Patchy rain possible
 12° /6° 0.7 mm 2
28 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 15° /0° 5.8 mm 4
29 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 11° /4° 9.2 mm 3
30 Sept. Light rain shower
Light rain shower
 11° /3° 1.7 mm 3
Next
Important Notice
Our weather forecast for Red Deer 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 Red Deer forecast closer to your planned date for the most up-to-date weather information.
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Red Deer in September - FAQ

What are the expected maximum and minimum temperatures in Red Deer during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Red Deer during September?
Moderate rainfall is anticipated in Red Deer during September, with a total of 53.3 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Red Deer during September?
The average wind speed in Red Deer during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Red Deer

Explore the daily rainfall trends and prepare for Red Deers September weather 💧

UV exposure in Red Deer during September

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

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Location coordinates Where is Red Deer?

Get accurate weather forecasts for Red Deer, located at latitude 52.267 and longitude -113.802. Stay updated with localized weather information tailored for Red Deer.

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