The Frontier Gazette & Almanack
“Fair Warning for Every Town Under the Sky” · Est. 1881
Measure in

Calgary Weather in September

Calgary in September

The short of it: Calgary in September averages a high of 19 °C (66 °F) and a low of 4 °C (40 °F), with 43 mm (1.7 in) of rain and about 12 h 33 min of daylight. Rated 5 of 5 for a visit; the best months are September and August. Source: TerraClimate climate normals, 1991–2020.

Average high 19° · low 4° · rain 43 mm · daylight 12 h 33 min

✦✦✦✦✦ Recommended for a visit · best months: September & August

September in Calgary brings afternoons near 19° and nights around 4°, with about 43 mm of rain over the month. Highs fall 5° against August, to near 19°; nights run about 4°. Rain is modest, about 43 mm, the 5th wettest month.

The sun is up for about 12 h 33 min in mid-September, 120 minutes less than a month before.

For the traveller: pack layers, a wool coat and stout boots. The Almanac rates September 5 of 5 for a visit; it is the best month of the year to come.

Against its neighbours, Calgary runs warmer than most and wetter than most in September. Centre City, 1 km to the SE, sees much the same highs.

September in Calgary, by the numbers

Warmth rank
4th warmest of 12
Rain rank
5th wettest of 12
Versus August
5° colder, 18 mm less rain
Versus October
7° warmer
Day–night spread
14°
Snow season
Nov–Apr
Daylight, mid-month
12 h 33 min
Average wind
12 km/h

Neighbouring Towns

September averages · distance by the crow’s flight
TownDistanceHighLowRain
Centre CityAlberta1 km SE19°5°42 mm
BeltlineAlberta2 km SE19°5°43 mm
ThorncliffeAlberta6 km NNE19°4°41 mm
VarsityAlberta7 km NW19°4°43 mm
Signal HillAlberta7 km WSW19°4°46 mm
BownessAlberta7 km WNW19°4°44 mm
DoverAlberta7 km ESE19°5°42 mm
Huntington HillsAlberta8 km N19°4°41 mm

The Almanac · Calgary Month by Month

Climate normals 1991–2020 · pick a month
PrecipitationAverage highAverage low
Recommended
The Almanac Speaks
September
✦✦✦✦✦

Highs fall 5° against August, to near 19°; nights run about 4°. Rain is modest, about 43 mm, the 5th wettest month.

Climate of Calgary by month
MonthHighLowRainWindDaylightVisit
January-2°-14°9.0 mm13 km/h8 h 23 min✦✦
February0°-12°10 mm12 km/h9 h 55 min✦✦
March4°-8°16 mm14 km/h11 h 43 min✦✦
April11°-3°26 mm14 km/h13 h 46 min✦✦✦✦
May17°3°54 mm14 km/h15 h 31 min✦✦✦✦
June20°7°104 mm13 km/h16 h 31 min✦✦✦
July25°10°57 mm12 km/h16 h 7 min✦✦✦✦
August24°9°61 mm11 km/h14 h 33 min✦✦✦✦
September19°4°43 mm12 km/h12 h 33 min✦✦✦✦✦
October12°-2°16 mm13 km/h10 h 34 min✦✦✦✦
November4°-8°14 mm13 km/h8 h 49 min✦✦
December-1°-13°11 mm12 km/h7 h 56 min✦✦

Questions Readers Ask about Calgary in September

Answered from the wire & the Almanac

What is the weather like in Calgary in September?

Days average 19 °C (66 °F) and nights 4 °C (40 °F), with about 43 mm (1.7 in) of rain over the month. Highs fall 5° against August, to near 19°; nights run about 4°. Rain is modest, about 43 mm, the 5th wettest month.

Is September a good time to visit Calgary?

The Almanac gives September 5 of 5 (recommended). It is the best month of the year to visit.

How long are the days in Calgary in September?

In mid-September the sun is up for about 12 h 33 min. The days are shortening — from 7 h 56 min in December to 16 h 31 min in June.

Does it snow in Calgary in September?

Hardly — September nights average 4 °C (40 °F), above freezing.

What should I pack for Calgary in September?

Layers, a warm coat and stout boots.

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The Editor’s Remark

“Weather is the only news that never grows stale. Each morning the sky writes its own front page, and we at Wanted Weather are but its telegraph operators.”— J. Whitmore, Editor