| Month | Average (°C) | Record (°C) | Average (cm) | ||
|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | |
| January | 36.5 | 23.6 | 45.9 | 15.4 | 13.1 |
| February | 35.7 | 23.1 | 43.5 | 13.1 | 11.1 |
| March | 34.7 | 21.6 | 41.9 | 12.2 | 5.9 |
| April | 32.5 | 18.4 | 39.0 | 5.8 | 1.1 |
| May | 28.2 | 13.5 | 37.8 | 1.8 | 0.7 |
| June | 25.3 | 9.9 | 34.5 | -1.3 | 0.9 |
| July | 25.5 | 8.6 | 35.2 | -2.9 | 0.3 |
| August | 27.8 | 9.8 | 36.4 | -1.1 | 0.2 |
| September | 32.3 | 14.1 | 40.4 | 1.0 | 0.5 |
| October | 35.3 | 18.4 | 42.5 | 6.1 | 1.7 |
| November | 37.0 | 21.4 | 43.9 | 10.3 | 4.3 |
| December | 37.4 | 23.2 | 45.4 | 12.0 | 7.3 |
| Entire year | 32.3 | 17.1 | 45.9 | -2.9 | 47.0 |
|
More Mount Isa Weather Records
1926–2023
|
||
|---|---|---|
| Highest daily low | 31.6 °C | January 30, 1990 |
| Lowest daily high | 9.4 °C | June 20, 2007 |
| Greatest daily range (Difference of high and low) |
30.4 °C | August 25, 2000 |
| Greatest difference in daily high over two conscutive days |
17.6 °C | Oct 21–22, 2016 |
| Most daily precipitation | 21.3 cm | January 15, 2004 |
| Most monthly precipitation | 53.5 cm | January 2009 |
| Most yearly precipitation | 91.7 cm | 1997 |
| Most yearly days with precipitation | 84 | 1974 |
| Most days in a year < 0 °C | 6 | 1984 |
| Most days in a year ≥ 20 °C | 365 | 2014 |
| Most days in a year ≥ 25 °C | 337 | 2017 |
| Most days in a year ≥ 30 °C | 270 | 2013 |
| Most days in a year ≥ 35 °C | 189 | 2013 |
| Most days in a year ≥ 40 °C | 68 | 2019 |
|
Mount Isa Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 19 days | Jan 22 – Feb 9, 1979 |
| Without precipitation | 258 days | Feb 28 – Nov 12, 1946 |
| High temperature ≥ 20 °C | 1018 days | Aug 20, 2016 – Jun 3, 2019 |
| High temperature ≥ 25 °C | 296 days | Aug 11, 2020 – Jun 2, 2021 |
| High temperature ≥ 30 °C | 175 days | Nov 4, 1985 – Apr 27, 1986 |
| High temperature ≥ 35 °C | 78 days | Dec 13, 1964 – Feb 28, 1965 |
| High temperature ≥ 40 °C | 23 days | Jan 2–24, 2019 |