Weather

Mt Isa Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max. (°C) 36.4 35.4 34.4 32.0 28.0 24.9 24.8 27.4 31.3 34.7 36.6 37.1 31.9
Mean Min. (°C) 23.7 23.3 21.8 18.5 13.8 10.0 8.7 10.2 14.2 18.4 21.5 23.1 17.3
Mean Rain (mm) 118.1 101.3 63.6 14.3 12.7 6.5 6.0 3.6 8.7 17.9 38.6 76.0 470.8
Mean Rain Days 9.9 9.0 5.7 2.2 1.7 1.1 0.9 1.0 1.7 3.2 5.4 8.0 48.6

Mt Isa Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max. (°C) 45.9 43.5 41.9 38.6 37.8 34.3 35.2 36.4 39.8 42.5 43.9 45.1 45.9
Low Max. (°C) 22.8 23.1 23.3 17.0 15.6 9.4 10.1 14.1 14.8 19.1 19.1 20.4 9.4
High Min. (°C) 31.6 30.1 29.3 27.3 24.0 20.3 20.1 21.3 26.6 27.6 30.1 30.7 31.6
Low Min. (°C) 15.4 13.1 13.1 5.8 1.8 -1.3 -2.9 -1.1 1.0 6.1 10.3 13.4 -2.9
High Rain (mm) 213.0 148.8 153.8 44.6 106.4 54.8 61.8 26.6 70.3 34.2 102.4 109.4 213.0

Mt Isa Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max. (°C) 39.9 40.5 38.3 35.1 31.1 28.8 26.9 31.6 35.3 38.2 39.8 39.7 34.2
Low Mn. Max. (°C) 30.0 31.3 30.2 26.9 24.2 20.4 22.6 24.9 27.6 31.9 32.7 31.6 29.9
High Mn. Min. (°C) 26.2 25.5 24.4 20.9 17.7 13.9 12.9 13.8 17.8 21.7 24.1 25.8 19.3
Low Mn. Min. (°C) 21.1 19.9 18.4 15.3 9.3 6.5 5.0 5.9 10.8 14.6 19.7 20.1 15.4
High Rain (mm) 535.2 251.8 276.6 167.8 176.4 111.8 67.4 41.8 117.0 91.4 205.6 275.2 1092.4
Low Rain (mm) 0.2 2.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.6 101.6

Mt Isa Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C 4.8 2.4 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.8 4.0 6.4 18.3
≥ 35°C 21.5 16.2 14.3 4.3 0.2 0.0 0.0 0.3 5.1 16.3 22.1 23.6 120.6
≥ 30°C 28.4 25.7 28.6 23.5 9.1 1.7 1.7 7.5 20.2 27.6 28.4 29.2 225.5
≤ 2°C 0.0 0.0 0.0 0.0 0.0 0.7 1.4 0.7 0.1 0.0 0.0 0.0 2.7
≤ 0°C 0.0 0.0 0.0 0.0 0.0 0.1 0.4 0.1 0.0 0.0 0.0 0.0 0.6
MOUNT ISA AERO
20.6778°S  139.4875°E  340m AMSL
Commenced 1966
Rainfall records: 50.1 years between 1966 and 2017
Min. temperature records: 49.8 years between 1966 and 2017
Max. temperature records: 49.8 years between 1966 and 2017