Climate averages 1991–2020
Calgary weather
in October.
A cool, fairly dry month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Calgary: daytime highs average 10.2°C and nights cool to about -0.7°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 24 mm of rain on roughly 6 days, which makes October a fairly dry month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 45 min on an average October day.
The nearest other city in this atlas is Airdrie (28 km away). In October its highs average 9.4°C, 0.8°C cooler than Calgary, with 26 mm of rain.
Among the 86 cities listed in Canada, Calgary ranks 75th of 86 for the warmest October highs and joint 3rd of 86 for the driest October (rainfall, lowest first). The mean October high of those 86 cities is 12.7°C; Calgary is 2.5°C cooler than that mean.
From October to November, average highs fall by 8.1°C to 2.1°C, and monthly rainfall falls from 24 mm to 19 mm.
The annual picture
October in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Calgary climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.9°C-13.1°C | -13.1°C | 12 | 3.7 | 8.58 h |
| February | 0.0°C-11.4°C | -11.4°C | 12 | 3.7 | 10.010 h |
| March | 4.2°C-7.6°C | -7.6°C | 21 | 5.5 | 11.812 h |
| April | 10.1°C-2.2°C | -2.2°C | 38 | 8.0 | 13.814 h |
| May | 15.7°C3.0°C | 3.0°C | 72 | 11.3 | 15.516 h |
| June | 19.1°C7.8°C | 7.8°C | 104 | 13.7 | 16.516 h |
| July | 22.7°C10.8°C | 10.8°C | 61 | 10.8 | 16.116 h |
| August | 22.3°C10.1°C | 10.1°C | 63 | 9.5 | 14.615 h |
| September | 17.5°C5.6°C | 5.6°C | 44 | 7.9 | 12.713 h |
| October, selected | 10.2°C-0.7°C | -0.7°C | 24 | 6.2 | 10.811 h |
| November | 2.1°C-7.1°C | -7.1°C | 19 | 4.9 | 9.09 h |
| December | -2.8°C-12.5°C | -12.5°C | 14 | 3.7 | 8.08 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Airdrie in OctoberCanada · 28 kmHigh 9.4°C · Low -0.4°C · 26 mm rain
- Red Deer in OctoberCanada · 137 kmHigh 9.1°C · Low -0.5°C · 24 mm rain
- Lethbridge in OctoberCanada · 175 kmHigh 11.9°C · Low 2.1°C · 28 mm rain
- Sherwood Park in OctoberCanada · 279 kmHigh 8.3°C · Low -0.2°C · 23 mm rain
- Edmonton in OctoberCanada · 281 kmHigh 8.9°C · Low 0.3°C · 23 mm rain
- Kelowna in OctoberCanada · 404 kmHigh 13.4°C · Low 6.3°C · 69 mm rain
- Spokane Valley in OctoberUnited States · 439 kmHigh 14.7°C · Low 4.5°C · 52 mm rain
- Kamloops in OctoberCanada · 440 kmHigh 12.4°C · Low 4.3°C · 45 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Calgary) is explained once on the Calgary year overview and on the Sources, method and limits page.