| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 18.7° | 6.4° | 23.4mm | 3.8 | 88 |
| February | 20.1° | 7.4° | 23.1mm | 3.5 | 93 |
| March | 24° | 10.2° | 21.3mm | 3.2 | 94 |
| April | 28.4° | 13.6° | 8.1mm | 1.6 | 91 |
| May | 33.4° | 18.2° | 3.2mm | 1 | 72 |
| June | 39.1° | 23.5° | 1mm | 0.5 | 51 |
| July | 40.3° | 27.7° | 24.6mm | 4 | 39 |
| August | 39.2° | 27° | 23.8mm | 4.6 | 42 |
| September | 36.7° | 23.9° | 16.9mm | 2.9 | 55 |
| October | 30.4° | 17.1° | 15.3mm | 2.6 | 81 |
| November | 23.7° | 10.7° | 14.7mm | 2.4 | 95 |
| December | 18.1° | 6.2° | 22.2mm | 4.2 | 86 |
January in Deer Valley averages a daily high of 18.7°C with nights around 6.4°C. Expect roughly 3.8 wet days totalling 23.4mm. Comfortable conditions for being outdoors all day.
February in Deer Valley averages a daily high of 20.1°C with nights around 7.4°C. Expect roughly 3.5 wet days totalling 23.1mm. Comfortable conditions for being outdoors all day.
March in Deer Valley averages a daily high of 24°C with nights around 10.2°C. Expect roughly 3.2 wet days totalling 21.3mm. Comfortable conditions for being outdoors all day.
April in Deer Valley averages a daily high of 28.4°C with nights around 13.6°C. Rain is rare — about 1.6 wet days and 8.1mm across the month. Comfortable conditions for being outdoors all day.
May in Deer Valley averages a daily high of 33.4°C with nights around 18.2°C. Rain is rare — about 1 wet days and 3.2mm across the month. Generally workable, with some weather to plan around.
June in Deer Valley averages a daily high of 39.1°C with nights around 23.5°C. Rain is rare — about 0.5 wet days and 1mm across the month. Demanding conditions — pack for it and plan indoor options.
July in Deer Valley averages a daily high of 40.3°C with nights around 27.7°C. Expect roughly 4 wet days totalling 24.6mm. Demanding conditions — pack for it and plan indoor options.
August in Deer Valley averages a daily high of 39.2°C with nights around 27°C. Expect roughly 4.6 wet days totalling 23.8mm. Demanding conditions — pack for it and plan indoor options.
September in Deer Valley averages a daily high of 36.7°C with nights around 23.9°C. Rain is rare — about 2.9 wet days and 16.9mm across the month. Generally workable, with some weather to plan around.
October in Deer Valley averages a daily high of 30.4°C with nights around 17.1°C. Rain is rare — about 2.6 wet days and 15.3mm across the month. Comfortable conditions for being outdoors all day.
November in Deer Valley averages a daily high of 23.7°C with nights around 10.7°C. Rain is rare — about 2.4 wet days and 14.7mm across the month. Comfortable conditions for being outdoors all day.
December in Deer Valley averages a daily high of 18.1°C with nights around 6.2°C. Expect roughly 4.2 wet days totalling 22.2mm. Comfortable conditions for being outdoors all day.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Deer Valley peaks at 95.
Based on 30 years of records, January–April scores highest for comfort in Deer Valley, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 40.3°C.
July is the wettest, averaging 24.6mm of rain across roughly 4 wet days.
December is the coolest month, with average daily highs around 18.1°C.