Mt Isa Long-term Averages

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Mean Max (°C)	36.6	35.4	34.0	31.5	27.4	24.4	24.0	26.8	30.4	34.2	36.3	37.2	31.5
Mean Min (°C)	25.0	24.5	23.2	20.2	16.2	12.6	11.6	13.6	17.1	21.0	23.5	24.6	19.4
Mean Rain (mm)	98.8	91.2	64.3	14.8	15.1	11.0	7.3	3.1	8.1	18.7	31.3	64.1	420.4
Median Rain (mm)	68.7	79.7	33.7	2.6	2.7	0.0	0.0	0.0	0.0	10.0	21.0	52.2	376.5
Mean Rain Days	8.7	8.2	5.3	1.7	1.5	1.1	1.0	0.7	1.3	2.9	4.7	6.5	43.1

Mt Isa Daily Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max (°C)	45.6	43.5	41.1	38.6	35.9	32.0	32.2	35.8	40.4	42.3	43.0	44.7	45.6
Low Max (°C)	22.5	22.7	21.4	16.7	15.0	12.5	11.2	15.5	16.4	18.3	19.5	22.3	11.2
High Min (°C)	31.7	30.6	29.1	27.5	25.5	20.0	23.3	21.4	28.3	28.6	30.6	32.2	32.2
Low Min (°C)	16.7	17.0	13.0	11.0	6.7	2.5	3.0	4.6	8.0	9.5	13.9	16.4	2.5
High Rain (mm)	196.2	101.0	124.0	79.2	84.6	65.4	83.2	44.7	61.8	61.7	93.4	127.4	196.2

Mt Isa Monthly Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Mn. Max (°C)	40.0	40.4	36.8	33.7	30.3	26.9	26.5	29.3	33.6	37.8	39.5	39.4	33.2
Low Mn. Max (°C)	30.1	30.7	30.0	26.4	23.4	21.7	21.9	23.6	27.4	31.2	33.6	33.9	29.6
High Mn. Min (°C)	27.3	27.8	25.7	22.0	18.3	15.3	14.2	15.5	19.4	25.0	25.7	27.1	21.0
Low Mn. Min (°C)	21.9	22.6	21.8	18.1	13.5	10.0	9.8	11.5	13.7	18.6	21.5	23.1	17.9
High Rain (mm)	563.4	276.4	316.8	141.2	145.4	124.2	95.2	48.5	111.0	99.2	214.8	237.2	1113.0
Low Rain (mm)	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	104.9

Mt Isa Annual Temperatures & Rainfall

Mt Isa Average Number of Days With Temperatures

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
≥ 40°C	6.4	3.0	0.1	0.0	0.0	0.0	0.0	0.0	0.0	0.4	3.9	7.1	20.6
≥ 35°C	22.2	16.0	12.8	2.6	0.1	0.0	0.0	0.2	2.8	14.7	21.5	24.0	115.9
≥ 30°C	28.7	25.9	27.9	22.7	7.2	1.1	1.0	6.3	18.8	27.6	28.4	29.6	224.8
≤ 2°C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
≤ 0°C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max	40.5	39.4	36.8	34.4	30.9	27.9	27.9	30.8	34.2	37.8	39.8	40.7	37.9
Low Max	32.3	31.4	31.0	28.3	23.5	20.6	20.3	22.6	26.0	30.6	32.9	33.7	24.5
High Min	27.8	27.0	25.6	23.2	19.8	16.3	15.2	17.2	21.2	24.5	26.3	27.3	25.5
Low Min	22.2	22.2	20.7	17.0	12.2	8.9	8.0	10.0	13.0	17.5	20.4	21.8	12.2

Mt Isa Data Availability

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Years of Minima	28	28	28	28	28	28	28	27	27	27	27	27	27.0
Earliest Entry	1965	1965	1965	1965	1965	1965	1965	1965	1965	1965	1965	1965	1965
Latest Entry	1992	1992	1992	1992	1992	1992	1992	1991	1991	1991	1991	1991	1992
Years of Maxima	28	28	28	28	28	28	28	27	27	27	27	27	27.0
Earliest Entry	1965	1965	1965	1965	1965	1965	1965	1965	1965	1965	1965	1965	1965
Latest Entry	1992	1992	1992	1992	1992	1992	1992	1991	1991	1991	1991	1991	1992
Years of Rainfall	93	92	91	90	87	89	90	91	91	91	91	91	90.0
Earliest Entry	1932	1932	1932	1932	1932	1932	1932	1932	1932	1932	1932	1932	1932
Latest Entry	2024	2024	2024	2024	2024	2023	2023	2023	2023	2023	2023	2023	2024

climate

Station Details

MOUNT ISA MINE
Northwest, Queensland

20.7361°S 139.4817°E 381m AMSL
Commenced 1932

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Weather News

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Warm and humid May breaks records

13:47 AEST With the welcoming of a new month as well as a new season, we reminisce on the weather that made May so significant. In literally every far-reaching corner of the country, notable highs and lows in moisture and temperature were observed for as long as records have been around. At Sydney Airport, May 2024 was the most humid May since records began in 2005 (2.3ºC average dewpoint departure from temperature).