Best Time-of-Year
The best month at Mount Lemmon is January, when temperatures average 3–10 °C (37–51 °F) and mid-day humidity sits around 41%. Expect dry, cool days, with around 22 excellent days in a typical January. January, February, and March are the most reliable months, with cooler temperatures.
- Terrible
- Poor
- Fair
- Good
- Excellent
- Perfect
Tap a month for its details below.
Month by Month
January
January is the year's best month for climbing — expect dry, cool days, with around 22 excellent days.
February
February is among the year's most reliable months — expect dry, cool days, with around 22 excellent days.
March
March is among the year's most reliable months — expect dry, mild days, with around 27 excellent days.
April
A typical April brings dry, mild days, with around 29 excellent days.
May
A typical May brings dry, warm days, with around 31 excellent days.
June
A typical June brings dry, warm days, with around 20 excellent days.
July
A typical July brings hot days, with around 8 excellent days.
August
A typical August brings rainy, warm days, with around 10 excellent days.
September
A typical September brings warm days, with around 17 excellent days.
October
A typical October brings dry, mild days, with around 27 excellent days.
November
A typical November brings dry, mild days, with around 27 excellent days.
December
A typical December brings dry, cool days, with around 24 excellent days.
A Typical Year
| Month | Excellent Days | Viable Days | Off Days | Temperature | Wet Days | Mid-Day Humidity |
|---|---|---|---|---|---|---|
| January | 22 | 4 | 5 | 3–10 °C 37–51 °F | 4 | 41% |
| February | 22 | 2 | 4 | 5–13 °C 40–56 °F | 4 | 34% |
| March | 27 | 1 | 3 | 6–16 °C 43–61 °F | 4 | 30% |
| April | 29 | 1 | 0 | 9–20 °C 48–68 °F | 0 | 20% |
| May | 31 | 0 | 0 | 12–24 °C 54–75 °F | 1 | 17% |
| June | 20 | 10 | 0 | 18–29 °C 64–84 °F | 4 | 22% |
| July | 8 | 21 | 2 | 20–29 °C 68–85 °F | 8 | 34% |
| August | 10 | 16 | 5 | 19–27 °C 66–80 °F | 13 | 44% |
| September | 17 | 10 | 3 | 17–26 °C 63–78 °F | 7 | 38% |
| October | 27 | 3 | 1 | 13–21 °C 55–71 °F | 3 | 32% |
| November | 27 | 1 | 2 | 8–16 °C 46–60 °F | 2 | 33% |
| December | 24 | 4 | 3 | 6–13 °C 42–56 °F | 3 | 39% |