Calgary Climate & Weather Averages
Canada · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Best Time to Visit Calgary
Based on temperature comfort, low rainfall, and sunshine hours, the best months to visit Calgary are:
July, August, June
Scores based on ideal temperature (18-28°C), low precipitation, and high sunshine. July scores 57/100.
Calgary has a Humid Continental climate with mild summers and very cold winters. The warmest month is July with an average temperature of 18.1°C (64.6°F), while January is the coldest at -7.3°C (18.9°F). Annual precipitation averages 488.0mm spread across approximately 94.0 rainy days per year, with June being the wettest month at 114.8mm and January the driest at 12.4mm. The city receives an average of 4.8-13.6 hours of sunshine per day, with the sunniest months being July and June. Humidity remains relatively consistent throughout the year, averaging around 64.0% annually, while average wind speeds reach 18.3 km/h. The overall annual mean temperature is 4.6°C (40.3°F), reflecting the humid continental conditions shaped by Calgary's latitude (51.05°) and surrounding geography. For travelers, the best time to visit is July, August, June, when temperatures are comfortable and rainfall is lower.
Calgary's high altitude and continental position create a climate with wide temperature ranges. I've studied the Chinook winds that provide dramatic winter warming, sometimes raising temperatures by 20°C in hours. The best time for visiting is June to August, when the weather is warmest and the nearby Rocky Mountains are accessible for hiking.
Seasonal Climate Overview
Spring (Mar-May)
Average temperature 3.4°C (38.1°F), rainfall 40.5mm, sunshine 10.2 hrs/day, humidity 58.7%. Cold season conditions dominate. Expect around 8.1 rainy days per month.
Summer (Jun-Aug)
Average temperature 16.6°C (61.9°F), rainfall 72.7mm, sunshine 12.6 hrs/day, humidity 63.7%. Mild transitional weather characterizes this period. Expect around 15.3 rainy days per month.
Autumn (Sep-Nov)
Average temperature 5.3°C (41.5°F), rainfall 29.0mm, sunshine 7.8 hrs/day, humidity 64.1%. Cold season conditions dominate. Expect around 6.3 rainy days per month.
Winter (Dec-Feb)
Average temperature -7.0°C (19.4°F), rainfall 20.4mm, sunshine 5.9 hrs/day, humidity 69.7%. Cold season conditions dominate. Expect around 1.5 rainy days per month.
Monthly Temperature Averages (°C / °F)
| Month | Avg High | Avg Low | Mean Temp |
|---|---|---|---|
| January | -2.5°C (27.5°F) | -12.4°C (9.7°F) | -7.3°C (18.9°F) |
| February | -1.0°C (30.2°F) | -12.0°C (10.4°F) | -6.6°C (20.1°F) |
| March | 3.4°C (38.1°F) | -8.7°C (16.3°F) | -3.0°C (26.6°F) |
| April | 9.7°C (49.5°F) | -2.9°C (26.8°F) | 3.1°C (37.6°F) |
| May | 16.3°C (61.3°F) | 3.5°C (38.3°F) | 10.0°C (50.0°F) |
| June | 20.5°C (68.9°F) | 8.4°C (47.1°F) | 14.6°C (58.3°F) |
| July | 24.3°C (75.7°F) | 11.8°C (53.2°F) | 18.1°C (64.6°F) |
| August | 23.7°C (74.7°F) | 10.9°C (51.6°F) | 17.2°C (63.0°F) |
| September | 19.8°C (67.6°F) | 7.3°C (45.1°F) | 13.3°C (55.9°F) |
| October | 11.4°C (52.5°F) | 0.2°C (32.4°F) | 5.3°C (41.5°F) |
| November | 2.3°C (36.1°F) | -7.2°C (19.0°F) | -2.6°C (27.3°F) |
| December | -2.5°C (27.5°F) | -11.5°C (11.3°F) | -7.0°C (19.4°F) |
Monthly Precipitation (mm)
| Month | Avg Rainfall | Bar |
|---|---|---|
| January | 12.4 mm | |
| February | 25.2 mm | |
| March | 25.2 mm | |
| April | 30.8 mm | |
| May | 65.5 mm | |
| June | 114.8 mm | |
| July | 50.4 mm | |
| August | 52.9 mm | |
| September | 29.0 mm | |
| October | 33.7 mm | |
| November | 24.2 mm | |
| December | 23.6 mm |
Monthly Rainy Days (avg days with rain > 0.1mm)
| Month | Avg Rainy Days | Bar |
|---|---|---|
| January | 1.2 | |
| February | 1.2 | |
| March | 1.8 | |
| April | 7.0 | |
| May | 15.6 | |
| June | 16.8 | |
| July | 16.8 | |
| August | 12.2 | |
| September | 9.0 | |
| October | 8.0 | |
| November | 1.8 | |
| December | 2.2 |
Monthly Humidity (%)
| Month | Avg Humidity | Bar |
|---|---|---|
| January | 70.3% | |
| February | 67.2% | |
| March | 63.9% | |
| April | 54.4% | |
| May | 57.7% | |
| June | 61.9% | |
| July | 66.1% | |
| August | 63.0% | |
| September | 60.0% | |
| October | 64.5% | |
| November | 67.8% | |
| December | 71.5% |
Monthly Wind Speed (avg max km/h)
| Month | Avg Max Wind | Bar |
|---|---|---|
| January | 18.8 km/h | |
| February | 19.3 km/h | |
| March | 17.6 km/h | |
| April | 19.4 km/h | |
| May | 18.8 km/h | |
| June | 19.1 km/h | |
| July | 16.9 km/h | |
| August | 17.4 km/h | |
| September | 17.4 km/h | |
| October | 17.5 km/h | |
| November | 18.8 km/h | |
| December | 18.1 km/h |
Monthly UV Index (avg max)
| Month | UV Index | Risk Level | Bar |
|---|---|---|---|
| January | — | — | |
| February | — | — | |
| March | — | — | |
| April | — | — | |
| May | — | — | |
| June | — | — | |
| July | — | — | |
| August | — | — | |
| September | — | — | |
| October | — | — | |
| November | — | — | |
| December | — | — |
Monthly Snowfall (cm)
| Month | Avg Snowfall | Bar |
|---|---|---|
| January | 8.0 cm | |
| February | 17.1 cm | |
| March | 17.0 cm | |
| April | 16.0 cm | |
| May | 4.2 cm | |
| June | 0.0 cm | |
| July | 0.0 cm | |
| August | 0.0 cm | |
| September | 0.0 cm | |
| October | 11.0 cm | |
| November | 15.7 cm | |
| December | 15.6 cm |
Monthly Sunshine Hours (daily average)
| Month | Avg Daily Sunshine | Bar |
|---|---|---|
| January | 6.0 hrs | |
| February | 7.0 hrs | |
| March | 8.9 hrs | |
| April | 10.4 hrs | |
| May | 11.2 hrs | |
| June | 12.2 hrs | |
| July | 13.6 hrs | |
| August | 12.0 hrs | |
| September | 10.3 hrs | |
| October | 7.5 hrs | |
| November | 5.5 hrs | |
| December | 4.8 hrs |
Frequently Asked Questions
What is the hottest month in Calgary?
July is the hottest month with an average temperature of 18.1°C (64.6°F).
What is the coldest month in Calgary?
January is the coldest month with an average temperature of -7.3°C (18.9°F).
What is the rainiest month in Calgary?
June is the wettest month with an average of 114.8mm of precipitation. The city experiences about 94.0 rainy days per year.
When is the best time to visit Calgary?
The best time to visit Calgary is during July, August, June, when temperatures are comfortable and rainfall is lower.
Cities with Similar Climate (Humid Continental)
Other Cities in Canada
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 51.05°, -114.07°. Timezone: America/Edmonton. Last updated: 2026-07-30.