Best Time-of-Year
The best month at Rocky Mountain National Park is June, when temperatures average 3–13 °C (37–56 °F) and mid-day humidity sits around 41%. Expect cool days, with around 23 excellent days in a typical June. June, July, and August are the most reliable months, with milder temperatures.
- Terrible
- Poor
- Fair
- Good
- Excellent
- Perfect
Tap a month for its details below.
Month by Month
January
A typical January brings cold days, with few climbable days. Cold takes out most of the rest.
February
A typical February brings cold days, with around 4 climbable days. Cold takes out most of the rest.
March
A typical March brings cold days, with around 3 excellent days. Cold takes out most of the rest.
April
A typical April brings cold days, with around 6 excellent days. Cold takes out most of the rest.
May
A typical May brings rainy, cool days, with around 12 excellent days.
June
June is the year's best month for climbing — expect cool days, with around 23 excellent days.
July
July is among the year's most reliable months — expect rainy, mild days, with around 27 excellent days.
August
August is among the year's most reliable months — expect rainy, cool days, with around 23 excellent days.
September
A typical September brings cool days, with around 24 excellent days.
October
A typical October brings dry, cold days, with around 13 excellent days.
November
A typical November brings cold days, with around 12 climbable days. Cold takes out most of the rest.
December
A typical December brings cold days, with around 5 climbable 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 | 1 | 30 | −14 to −7 °C 7–19 °F | 10 | 62% |
| February | 0 | 4 | 24 | −13 to −5 °C 9–23 °F | 10 | 58% |
| March | 3 | 7 | 21 | −10 to −2 °C 14–29 °F | 11 | 55% |
| April | 6 | 10 | 14 | −8 to 2 °C 18–35 °F | 11 | 49% |
| May | 12 | 10 | 9 | −3 to 6 °C 26–43 °F | 14 | 50% |
| June | 23 | 3 | 4 | 3–13 °C 37–56 °F | 9 | 41% |
| July | 27 | 2 | 2 | 6–16 °C 42–61 °F | 12 | 41% |
| August | 23 | 6 | 2 | 5–15 °C 42–59 °F | 12 | 47% |
| September | 24 | 3 | 3 | 3–13 °C 37–55 °F | 7 | 43% |
| October | 13 | 10 | 8 | −3 to 6 °C 27–42 °F | 5 | 48% |
| November | 0 | 12 | 18 | −8 to −1 °C 17–30 °F | 7 | 53% |
| December | 0 | 5 | 26 | −11 to −5 °C 13–24 °F | 10 | 60% |