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Mount Isa vs Crested Butte

BSh Hot semi-aridDfc Subarctic

Comparing Mount Isa change · Crested Butte change

Bottom line

Mount Isa is the warmer of the two — about 42°F on the annual average; Crested Butte is the wetter, with 5 in more rain a year, and Mount Isa the sunnier.

Warmer Mount Isa 42°F on the year

Wetter Crested Butte 5 in more a year

Sunnier Mount Isa 21 pp less cloud

Colder winters Crested Butte 52°F colder nights

How the seasons compare

The differences between Mount Isa and Crested Butte, in everyday terms.

Summers

Mount Isa has far hotter summers

Mount Isa: Very hot
Crested Butte: Mild

Winters

Mount Isa has far milder winters

Mount Isa: Cool
Crested Butte: Bitterly cold

Rain & snow

Crested Butte is wetter

Mount Isa: Fairly dry
Crested Butte: Moderate rainfall

Sky

Mount Isa is sunnier

Mount Isa: Fairly sunny
Crested Butte: Partly cloudy

Month-by-month charts

Temperature

Mount Isa is the warmer of the two — about 42°F on the annual average.

Precipitation

Crested Butte is the wetter — about 5 in more across the year.

Clear skies

Mount Isa has the clearer skies — the higher line.

Exact monthly numbers

Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.

Avg high (°F) Mount Isa runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	98	97	96	91	83	77	78	82	90	—	99	101
Crested Butte	26	30	38	47	58	71	76	74	66	55	40	27
Difference	-72	-67	-57	-45	-25	-7	-2	-8	-24	—	-59	-74

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Mount Isa	98	97	96	91	83	77
Crested Butte	26	30	38	47	58	71
Difference	-72	-67	-57	-45	-25	-7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	78	82	90	—	99	101
Crested Butte	76	74	66	55	40	27
Difference	-2	-8	-24	—	-59	-74

Avg low (°F) Mount Isa runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	73	73	70	65	55	48	46	47	55	—	69	73
Crested Butte	-6	-2	7	19	28	34	39	39	31	22	9	-4
Difference	-79	-75	-62	-45	-26	-14	-6	-9	-24	—	-60	-76

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Mount Isa	73	73	70	65	55	48
Crested Butte	-6	-2	7	19	28	34
Difference	-79	-75	-62	-45	-26	-14

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	46	47	55	—	69	73
Crested Butte	39	39	31	22	9	-4
Difference	-6	-9	-24	—	-60	-76

Precipitation (in) Varies through the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	4.8	4.1	2.6	0.5	0.3	0.4	0.1	0.1	0.4	0.7	1.7	3
Crested Butte	2.7	2.5	2.1	2	1.5	0.9	2	2	1.9	1.7	2	2.3
Difference	-2	-1.5	-0.4	+1.5	+1.2	+0.6	+1.9	+1.9	+1.5	+1	+0.3	-0.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Mount Isa	4.8	4.1	2.6	0.5	0.3	0.4
Crested Butte	2.7	2.5	2.1	2	1.5	0.9
Difference	-2	-1.5	-0.4	+1.5	+1.2	+0.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	0.1	0.1	0.4	0.7	1.7	3
Crested Butte	2	2	1.9	1.7	2	2.3
Difference	+1.9	+1.9	+1.5	+1	+0.3	-0.8

Snowfall (in)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	—	—	—	—	—	—	—	—	—	—	—	—
Crested Butte	41.7	35.3	27.3	18	6.9	0.3	0	0	1	8.1	26.1	34.6
Difference	—	—	—	—	—	—	—	—	—	—	—	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Mount Isa	—	—	—	—	—	—
Crested Butte	41.7	35.3	27.3	18	6.9	0.3
Difference	—	—	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	—	—	—	—	—	—
Crested Butte	0	0	1	8.1	26.1	34.6
Difference	—	—	—	—	—	—

Cloud cover (%) Crested Butte runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	61	55	43	28	25	17	15	13	19	30	44	52
Crested Butte	54	60	60	63	61	46	57	58	46	44	49	54
Difference	-6	+5	+17	+34	+36	+29	+42	+45	+26	+14	+4	+2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Mount Isa	61	55	43	28	25	17
Crested Butte	54	60	60	63	61	46
Difference	-6	+5	+17	+34	+36	+29

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	15	13	19	30	44	52
Crested Butte	57	58	46	44	49	54
Difference	+42	+45	+26	+14	+4	+2

Relative humidity (%) Crested Butte runs higher most of the year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	53	57	53	40	40	42	37	30	26	26	33	41
Crested Butte	91	94	89	76	64	52	56	59	57	63	77	89
Difference	+38	+37	+37	+36	+25	+10	+19	+29	+31	+37	+44	+47

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Mount Isa	53	57	53	40	40	42
Crested Butte	91	94	89	76	64	52
Difference	+38	+37	+37	+36	+25	+10

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Mount Isa	37	30	26	26	33	41
Crested Butte	56	59	57	63	77	89
Difference	+19	+29	+31	+37	+44	+47

How both climates are changing

Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Mount Isa trends → · Crested Butte trends →

Methodology & sources

Mount Isa

Temperature & precipitation — 1991–2020 normals computed from 17 years of daily observations at Mount Isa Mine, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

Crested Butte

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Crested Butte, a weather station, about 1 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →

← change Mount Isa · change Crested Butte → · Mount Isa page · Crested Butte page