Best Time-of-Year
The best month at Castle Rocks is April, when temperatures average −1 to 8 °C (30–47 °F) and mid-day humidity sits around 45%. Expect cool days, with around 18 excellent days in a typical April. April, May, and June 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 cold days, with around 7 climbable days. Cold takes out most of the rest.
February
A typical February brings cold days, with around 4 excellent days. Cold takes out most of the rest.
March
A typical March brings 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 18 excellent days.
May
May is among the year's most reliable months — expect cool days, with around 23 excellent days.
June
June is among the year's most reliable months — expect dry, mild days, with around 28 excellent days.
July
A typical July brings dry, warm days, with around 30 excellent days.
August
A typical August brings dry, warm days, with around 28 excellent days.
September
A typical September brings dry, mild days, with around 26 excellent days.
October
A typical October brings dry, cool days, with around 20 excellent days.
November
A typical November brings dry, cold days, with around 10 excellent days. Cold takes out most of the rest.
December
A typical December brings snowy, cold days, with around 3 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 | 0 | 7 | 24 | −7 to −1 °C 19–30 °F | 9 | 68% |
| February | 4 | 6 | 18 | −6 to 1 °C 21–34 °F | 9 | 61% |
| March | 10 | 7 | 14 | −3 to 5 °C 26–40 °F | 10 | 56% |
| April | 18 | 5 | 7 | −1 to 8 °C 30–47 °F | 7 | 45% |
| May | 23 | 5 | 3 | 4–14 °C 38–57 °F | 8 | 41% |
| June | 28 | 2 | 0 | 8–20 °C 47–68 °F | 6 | 34% |
| July | 30 | 1 | 0 | 15–27 °C 58–80 °F | 2 | 24% |
| August | 28 | 2 | 1 | 13–24 °C 56–76 °F | 5 | 31% |
| September | 26 | 2 | 2 | 10–21 °C 49–69 °F | 4 | 32% |
| October | 20 | 5 | 6 | 3–13 °C 37–55 °F | 5 | 44% |
| November | 10 | 8 | 12 | −3 to 5 °C 26–40 °F | 6 | 54% |
| December | 3 | 8 | 20 | −5 to 1 °C 23–34 °F | 12 | 64% |