| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 19.2° | 5.5° | 20.5mm | 3.7 | 90 |
| February | 21.7° | 7.4° | 23.6mm | 3.9 | 92 |
| March | 25.7° | 10.3° | 19.3mm | 2.6 | 95 |
| April | 30.1° | 13.5° | 6.7mm | 1.5 | 85 |
| May | 34.8° | 18.2° | 2.8mm | 0.7 | 67 |
| June | 40.6° | 23° | 0.7mm | 0.2 | 45 |
| July | 42° | 27.2° | 23.9mm | 3.9 | 32 |
| August | 40.8° | 26.7° | 29.9mm | 4 | 37 |
| September | 37.4° | 22.9° | 19.6mm | 3.4 | 52 |
| October | 31.6° | 15.8° | 10.6mm | 2 | 78 |
| November | 24.4° | 9.8° | 13.6mm | 2.3 | 95 |
| December | 18.3° | 5.6° | 18.2mm | 3.9 | 87 |
January in Goodyear averages a daily high of 19.2°C with nights around 5.5°C. Expect roughly 3.7 wet days totalling 20.5mm. Comfortable conditions for being outdoors all day.
February in Goodyear averages a daily high of 21.7°C with nights around 7.4°C. Expect roughly 3.9 wet days totalling 23.6mm. Comfortable conditions for being outdoors all day.
March in Goodyear averages a daily high of 25.7°C with nights around 10.3°C. Rain is rare — about 2.6 wet days and 19.3mm across the month. Comfortable conditions for being outdoors all day.
April in Goodyear averages a daily high of 30.1°C with nights around 13.5°C. Rain is rare — about 1.5 wet days and 6.7mm across the month. Comfortable conditions for being outdoors all day.
May in Goodyear averages a daily high of 34.8°C with nights around 18.2°C. Rain is rare — about 0.7 wet days and 2.8mm across the month. Generally workable, with some weather to plan around.
June in Goodyear averages a daily high of 40.6°C with nights around 23°C. Rain is rare — about 0.2 wet days and 0.7mm across the month. Demanding conditions — pack for it and plan indoor options.
July in Goodyear averages a daily high of 42°C with nights around 27.2°C. Expect roughly 3.9 wet days totalling 23.9mm. A hard month to visit for comfort alone.
August in Goodyear averages a daily high of 40.8°C with nights around 26.7°C. Expect roughly 4 wet days totalling 29.9mm. Demanding conditions — pack for it and plan indoor options.
September in Goodyear averages a daily high of 37.4°C with nights around 22.9°C. Expect roughly 3.4 wet days totalling 19.6mm. Demanding conditions — pack for it and plan indoor options.
October in Goodyear averages a daily high of 31.6°C with nights around 15.8°C. Rain is rare — about 2 wet days and 10.6mm across the month. Comfortable conditions for being outdoors all day.
November in Goodyear averages a daily high of 24.4°C with nights around 9.8°C. Rain is rare — about 2.3 wet days and 13.6mm across the month. Comfortable conditions for being outdoors all day.
December in Goodyear averages a daily high of 18.3°C with nights around 5.6°C. Expect roughly 3.9 wet days totalling 18.2mm. 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. Goodyear peaks at 95.
Based on 30 years of records, November–March scores highest for comfort in Goodyear, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 42°C.
August is the wettest, averaging 29.9mm of rain across roughly 4 wet days.
December is the coolest month, with average daily highs around 18.3°C.