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Mt Isa Climate

Mt Isa Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
36.4 35.3 34.3 31.9 27.9 24.8 24.8 27.3 31.4 34.7 36.5 37.2 31.9
Mean Min (°C)
23.7 23.3 21.7 18.5 13.8 9.9 8.6 10.2 14.2 18.5 21.4 23.0 17.2
Mean Rain (mm)
113.6 103.2 64.3 15.1 13.0 5.9 5.7 3.5 6.6 18.4 38.7 73.9 462.8
Median Rain (mm)
72.8 85.6 38.0 1.8 3.7 0.0 0.0 0.4 0.4 8.6 25.2 49.4 421.2
Mean Rain Days
9.8 9.2 5.8 2.3 1.8 1.0 0.9 0.9 1.6 3.3 5.4 7.6 48.5

Mt Isa Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
45.9 43.5 40.9 38.6 37.1 33.5 35.2 36.4 39.8 42.5 43.5 45.1 45.9
Low Max (°C)
22.8 23.1 23.3 17.0 15.6 9.4 10.6 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 6.2 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 40.2 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 37.3 35.0 31.1 28.8 26.9 31.6 35.3 38.2 39.6 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 68.6 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 Annual Temperatures & Rainfall

MOUNT ISA AERO

Mean daily minimum temp
Mean daily maximum temp
Highest/lowest on record
Highest/lowest on record
Mean monthly rainfall

Mt Isa Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40.0°C
4.8 2.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.7 3.8 6.4 18.1
≥ 35.0°C
21.4 15.7 13.7 3.9 0.1 0.0 0.0 0.3 5.2 16.3 21.9 23.7 120.2
≥ 30.0°C
28.4 25.6 28.4 23.5 8.6 1.6 1.6 7.4 20.3 27.6 28.4 29.3 226.7
≤ 2.0°C
0.0 0.0 0.0 0.0 0.0 0.7 1.5 0.7 0.1 0.0 0.0 0.0 2.9
≤ 0.0°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

Mt Isa 'per Week' Values (14th/86th Percentiles)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
40.0 39.0 37.0 34.7 31.2 28.5 28.4 31.2 35.3 38.0 39.8 40.5 37.9
Low Max
32.0 31.4 31.7 28.9 24.3 21.1 21.0 23.2 26.8 30.9 33.1 33.5 25.1
High Min
26.3 25.7 24.4 22.0 18.5 14.3 13.1 15.0 18.8 22.6 24.9 26.1 24.0
Low Min
21.3 21.2 18.6 15.0 9.4 5.6 4.0 5.6 9.8 14.3 17.9 20.2 9.3

Mt Isa Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
47 47 47 48 48 48 48 47 47 47 48 48 47.4
Earliest Entry
1967 1967 1967 1967 1967 1967 1967 1967 1967 1967 1967 1966 1966
Latest Entry
2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014
Years of Maxima
47 47 48 48 48 48 48 47 47 47 48 48 47.4
Earliest Entry
1967 1967 1967 1967 1967 1967 1967 1967 1967 1967 1967 1966 1966
Latest Entry
2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014
Years of Rainfall
48 48 48 48 47 48 48 48 47 48 48 48 47.7
Earliest Entry
1967 1967 1967 1967 1968 1967 1967 1967 1968 1967 1967 1966 1966
Latest Entry
2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014

Station Details

MOUNT ISA AERO
Northwest, Queensland
20.6778°S 139.4875°E 340m AMSL
Commenced 1966
Display Your Local Weather

Weather News

Cyclone Debbie strengthens to cat 2 on way to probable cat 4 as it continues towards Queensland coast

01:31 EDT

A cyclone off northern Queensland has intensified to a category two and could reach category four by the time it crosses the coast somewhere between Cardwell and Bowen, near Townsville, the Bureau of Meteorology (BOM) has warned.

Cyclone Debbie: How the BOM names cyclones

20:42 EDT

The Bureau of Meteorology has off the coast of Queensland.

Queensland braces for Tropical Cyclone Debbie

12:37 EDT

Tropical Cyclone Debbie is strengthening quickly on its journey to make landfall, likely between Lucinda and Proserpine on Monday or Tuesday.