Best Time-of-Year
The best month at Calgary / Bow Valley is April, when temperatures average −3 to 9 °C (27–49 °F) and mid-day humidity sits around 44%. Expect cool days, with around 17 excellent days in a typical April. May, September, and October are the most reliable months, with milder temperatures.
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Tap a month for its details below.
Month by Month
January
A typical January brings dry, cold days, with around 5 excellent days. Cold takes out most of the rest.
February
A typical February brings dry, cold days, with around 6 excellent days. Cold takes out most of the rest.
March
A typical March brings dry, cold days, with around 10 excellent days. Cold takes out most of the rest.
April
April is the year's best month for climbing — expect cool days, with around 17 excellent days.
May
May is among the year's most reliable months — expect mild days, with around 22 excellent days.
June
A typical June brings rainy, mild days, with around 19 excellent days.
July
A typical July brings warm days, with around 12 excellent days.
August
A typical August brings warm days, with around 17 excellent days.
September
September is among the year's most reliable months — expect dry, mild days, with around 24 excellent days.
October
October is among the year's most reliable months — expect dry, cool days, with around 22 excellent days.
November
A typical November brings dry, cold days, with around 9 excellent days. Cold takes out most of the rest.
December
A typical December brings dry, cold days, with around 2 excellent days. Cold takes out most of the rest.
A Typical Year
| Month | Excellent Days | Viable Days | Off Days | Temperature | Wet Days | Mid-Day Humidity |
|---|---|---|---|---|---|---|
| January | 5 | 10 | 16 | −11 to −1 °C 13–30 °F | 2 | 59% |
| February | 6 | 7 | 15 | −11 to −1 °C 11–30 °F | 4 | 56% |
| March | 10 | 6 | 15 | −8 to 3 °C 17–37 °F | 6 | 55% |
| April | 17 | 5 | 8 | −3 to 9 °C 27–49 °F | 7 | 44% |
| May | 22 | 4 | 5 | 4–17 °C 40–63 °F | 9 | 41% |
| June | 19 | 4 | 7 | 7–19 °C 45–67 °F | 14 | 47% |
| July | 12 | 13 | 6 | 11–24 °C 51–75 °F | 9 | 48% |
| August | 17 | 11 | 3 | 10–24 °C 50–74 °F | 8 | 47% |
| September | 24 | 4 | 2 | 7–20 °C 44–69 °F | 5 | 43% |
| October | 22 | 4 | 5 | 0–12 °C 32–54 °F | 4 | 46% |
| November | 9 | 9 | 12 | −7 to 3 °C 20–38 °F | 4 | 56% |
| December | 2 | 8 | 21 | −12 to −3 °C 10–27 °F | 4 | 66% |