Planning a trip to Calgary in September? You are in luck! The weather is generally good, with an average maximum temperature of +66°F and approximately 5 sunny days. Just be prepared for some rain, as there are usually around 10 rainy days and 44 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+66°F
Avg. max. temperature
+16°F
Min.
+93°F
Max.
44 mm
Total precipitation
60%
Avg. humidity
3 m/s
Avg. wind
5 ☀️
Sunny Days
12 ⛅️
Cloudy
10 🌦
Rainy
Our opinion: Calgary has good weather in September.
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Average temperature in Calgary in September
Here are the expected maximum, average and minimum temperatures in Calgary for September based on the historical data.
Last Year
Historical Data
Going from a maximum of +84°F during the day to a minimum of +36°F during the night, the temperature in September averages around +70°F.
The average maximum temperature goes down 52% by the end of the month, compared with the beginning of the month, from +77°F to +52°F.
Is Calgary warm or cold in September?
Calgary is typically mild in September.
Maximum temperatures go down compared to the previous month from +75°F to +66°F. The minimum temperature also goes down from +50°F to +41°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Calgary:
Climate in Calgary in September
Calgary weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+75°F
+66°F
+54°F
Min. temperature
+27°F
+16°F
-15°F
Max. temperature
+99°F
+93°F
+81°F
Rainfall
67 mm
44 mm
16 mm
Wind
3 m/s
3 m/s
3 m/s
Humidity
61%
60%
60%
Air pressure
1014 HPa
1014 HPa
1012 HPa
Sunny days
4
5
4
Cloudy days
9
12
17
Rainy days
12
10
6
Snowy days
0
1
5
September weather is still as good as in August.It’s getting colder in September. From +75°F in the day, the average maximum temperature lowers to +66°F.As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 67 mm to 44 mm.It feels drier, as humidity decreases from 61% to 60%.The average wind speed doesn’t change much during September, staying around 3 m/s.The good news is there are likely to be more sunny days in September, from 4 to 5.
October brings much the same weather, it remains good.
Wind speed in Calgary in September based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Calgary is gradually increasing during September, going from 2 m/s to 5 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Calgary based on historical data.
Last Year
Historical Data
Typically, there is a 27% chance of rain on an average day in September, with total rainfall of approximately 28 mm. The maximum amount of rainfall per day is around 8 mm, which is considered light rain.On average, there are about 8 rainy days during September, so prepare to bring an umbrella.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Calgary wettest month is June, where a typical day has a 53% chance of precipitation and 104 mm of rainfall per day. January, on the other hand, is the driest month with a mere 3% chance of precipitation and 1 mm of rainfall per day.
Snow
Amount of snow in mm during September in Calgary based on historical data.
Last Year
Historical Data
Typically, there is a 0% chance of snow on an average day in September, with a total monthly snowfall of approximately 0 mm.
Here’s how September is compared with other months in the amount of snow, total mm:
How was the weather last September in Calgary?
This is the weather in Calgary in September 2023:
1 September
🌫️
+76°F
2 September
☁️
+83°F
3 September
🌫️
+81°F
4 September
🌫️
+63°F
5 September
🌫️
+73°F
6 September
☁️
+72°F
7 September
☀️
+66°F
8 September
☁️
+67°F
9 September
☀️
+71°F
10 September
☀️
+73°F
11 September
☀️
+77°F
12 September
☁️
+76°F
13 September
☁️
+74°F
14 September
☀️
+69°F
15 September
☀️
+79°F
16 September
☀️
+85°F
17 September
☀️
+83°F
18 September
☁️
+75°F
19 September
☁️
+60°F
20 September
☁️
+48°F
21 September
☁️
+61°F
22 September
☀️
+68°F
23 September
☀️
+71°F
24 September
☁️
+68°F
25 September
☁️
+67°F
26 September
☁️
+70°F
27 September
☁️
+65°F
28 September
☁️
+60°F
29 September
☁️
+55°F
30 September
🌫️
+51°F
In September 2023 Calgary had 10 sunny days, 15 cloudy days, and 0 rainy days. The average maximum temperature was +70°F, with an absolute maximum of +84°F and a minimum of +48°F. The average humidity was 64%, with a maximum of 100% and a minimum of 7%. The average wind speed was 3 m/s, with a maximum of 12 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Calgary climate has changed over the last 43 years.
The climate in Calgary in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1996 (+47°F) and the highest in 2023 (+56°F). The driest year was 1979 with only 203 mm of rainfall, and the wettest year was 2019 with 702 mm.
FAQ
Frequently asked questions about the weather in Calgary in September:
Is September a good time to visit Calgary?
September is a really good time to go to Calgary. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Calgary.
Can you sunbathe in Calgary in September?
September has mild temperatures in Calgary. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Is Calgary rainy in September?
Calgary is usually dry in September. Plan your packing around outdoor activities and exploring.
Is it sunny in Calgary in September?
Usually, it’s not very sunny in Calgary in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Calgary, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
