Best Time-of-Year
The best month at Boulder Canyon is April, when temperatures average 0–11 °C (32–52 °F) and mid-day humidity sits around 37%. Expect cool days, with around 20 excellent days in a typical April. April, May, and October are the most reliable months.
- Terrible
- Poor
- Fair
- Good
- Excellent
- Perfect
Tap a month for its details below.
Month by Month
January
A typical January brings dry, cold days, with around 7 excellent days. Cold takes out most of the rest.
February
A typical February brings dry, cold days, with around 11 excellent days.
March
A typical March brings cool days, with around 15 excellent days.
April
April is the year's best month for climbing — expect cool days, with around 20 excellent days.
May
May is among the year's most reliable months — expect rainy, mild days, with around 22 excellent days.
June
A typical June brings mild days, with around 23 excellent days.
July
A typical July brings warm days, with around 26 excellent days.
August
A typical August brings warm days, with around 24 excellent days.
September
A typical September brings dry, mild days, with around 26 excellent days.
October
October is among the year's most reliable months — expect dry, cool days, with around 24 excellent days.
November
A typical November brings dry, cool days, with around 18 excellent days.
December
A typical December brings dry, cold days, with around 14 excellent days.
A Typical Year
| Month | Excellent Days | Viable Days | Off Days | Temperature | Wet Days | Mid-Day Humidity |
|---|---|---|---|---|---|---|
| January | 7 | 9 | 15 | −7 to 2 °C 19–35 °F | 6 | 48% |
| February | 11 | 8 | 9 | −5 to 4 °C 22–40 °F | 6 | 42% |
| March | 15 | 6 | 10 | −2 to 8 °C 28–46 °F | 7 | 42% |
| April | 20 | 5 | 5 | 0–11 °C 32–52 °F | 8 | 37% |
| May | 22 | 2 | 7 | 4–15 °C 40–59 °F | 13 | 43% |
| June | 23 | 3 | 4 | 10–22 °C 51–72 °F | 11 | 39% |
| July | 26 | 3 | 2 | 13–25 °C 56–78 °F | 10 | 34% |
| August | 24 | 4 | 3 | 13–24 °C 56–76 °F | 11 | 38% |
| September | 26 | 2 | 2 | 10–22 °C 50–71 °F | 6 | 34% |
| October | 24 | 4 | 3 | 4–15 °C 39–58 °F | 4 | 37% |
| November | 18 | 5 | 7 | −2 to 8 °C 29–46 °F | 5 | 40% |
| December | 14 | 9 | 8 | −3 to 5 °C 26–42 °F | 4 | 39% |