| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 12.8° | -0.7° | 27.8mm | 5.3 | 62 |
| February | 15.5° | 1.3° | 32mm | 5.1 | 74 |
| March | 20.6° | 4.9° | 25.5mm | 4.8 | 90 |
| April | 24.6° | 8.5° | 15.1mm | 3.2 | 94 |
| May | 30.1° | 13.7° | 7.8mm | 2.6 | 82 |
| June | 36.5° | 19.2° | 4.6mm | 1.2 | 60 |
| July | 39.5° | 23.2° | 15.6mm | 3.3 | 43 |
| August | 38.3° | 22.2° | 20.6mm | 3.3 | 48 |
| September | 34° | 17.2° | 17.3mm | 2.5 | 67 |
| October | 26.6° | 9.6° | 18.1mm | 3 | 94 |
| November | 18.5° | 2.9° | 14.9mm | 2.9 | 89 |
| December | 12.4° | -0.8° | 21.8mm | 4.4 | 63 |
January in Saint George averages a daily high of 12.8°C with nights around -0.7°C. Expect roughly 5.3 wet days totalling 27.8mm. Generally workable, with some weather to plan around.
February in Saint George averages a daily high of 15.5°C with nights around 1.3°C. Expect roughly 5.1 wet days totalling 32mm. Generally workable, with some weather to plan around.
March in Saint George averages a daily high of 20.6°C with nights around 4.9°C. Expect roughly 4.8 wet days totalling 25.5mm. Comfortable conditions for being outdoors all day.
April in Saint George averages a daily high of 24.6°C with nights around 8.5°C. Expect roughly 3.2 wet days totalling 15.1mm. Comfortable conditions for being outdoors all day.
May in Saint George averages a daily high of 30.1°C with nights around 13.7°C. Rain is rare — about 2.6 wet days and 7.8mm across the month. Comfortable conditions for being outdoors all day.
June in Saint George averages a daily high of 36.5°C with nights around 19.2°C. Rain is rare — about 1.2 wet days and 4.6mm across the month. Generally workable, with some weather to plan around.
July in Saint George averages a daily high of 39.5°C with nights around 23.2°C. Expect roughly 3.3 wet days totalling 15.6mm. Demanding conditions — pack for it and plan indoor options.
August in Saint George averages a daily high of 38.3°C with nights around 22.2°C. Expect roughly 3.3 wet days totalling 20.6mm. Demanding conditions — pack for it and plan indoor options.
September in Saint George averages a daily high of 34°C with nights around 17.2°C. Rain is rare — about 2.5 wet days and 17.3mm across the month. Generally workable, with some weather to plan around.
October in Saint George averages a daily high of 26.6°C with nights around 9.6°C. Expect roughly 3 wet days totalling 18.1mm. Comfortable conditions for being outdoors all day.
November in Saint George averages a daily high of 18.5°C with nights around 2.9°C. Rain is rare — about 2.9 wet days and 14.9mm across the month. Comfortable conditions for being outdoors all day.
December in Saint George averages a daily high of 12.4°C with nights around -0.8°C. Expect roughly 4.4 wet days totalling 21.8mm. Generally workable, with some weather to plan around.
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. Saint George peaks at 94.
Based on 30 years of records, March–April scores highest for comfort in Saint George, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 39.5°C.
February is the wettest, averaging 32mm of rain across roughly 5.1 wet days.
December is the coolest month, with average daily highs around 12.4°C.