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Forecast

Mount Isa (20.7266°S, 139.4943°E, 365m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TOMORROW
    Windy 24° 41°
    Chance of rain: 5%
    Likely amount: < 1mm
    First
    light     		Sunrise Sunset Last light
    Sunrise Sunset
    6:01am EST 6:25am EST 7:26pm EST 7:50pm EST
    NOW
    37.8° Feels Like: 33.5°
    Relative Humidity: 17%
    Dew: 8.6°
    Wind: E 20km/h
    Gust: 30km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1003.5hPa

  3. Today Weather

    Mount Isa
    Now
    37.1°c
    Feels Like:
    33.7°
    Wind:
    E 15km/h
    Gusts:
    22km/h
    Humidity:
    17%
    Windy
     
    24°
    Min
    41°
    Max
    Today in Mount Isa
    Mostly sunny. Slight chance of a shower E of Mt Isa in the afternoon and evening. Near zero chance of rain elsewhere. The chance of a thunderstorm from the late morning. Winds E 20 to 30 km/h tending E/SE 35 to 50 km/h in the morning. Overnight temperatures falling to the mid to high 20s with daytime temperatures reaching the low 40s.
    Tomorrow
    Windy
    24°
    Min
    41°
    Max
    Partly cloudy. High chance of showers E of Mt Isa, medium chance elsewhere. The chance of a thunderstorm. Winds E 35 to 50 km/h. Overnight temperatures falling to the low to mid 20s with daytime temperatures reaching 35 to 40.

  4. Radar

  5. Popup Radar

  6. Warnings

  7. Next 48 Hours


    Next 48 Hours

  8. 7 day forecast

    Today: Mostly sunny. Slight chance of a shower E of Mt Isa in the afternoon and evening. Near zero chance of rain elsewhere. The chance of a thunderstorm from the late morning. Winds E 20 to 30 km/h tending E/SE 35 to 50 km/h in the morning. Overnight temperatures falling to the mid to high 20s with daytime temperatures reaching the low 40s.

    Forecast for Mount Isa (20.7266°S, 139.4943°E, 365m AMSL)
      Sat Sun Mon Tue Wed Thu Fri
    Summary Windy Late shower Late shower Possible thunderstorm Possible shower Showers Heavy rain
    Minimum 24° 22° 20° 19° 20° 22° 23°
    Maximum 41° 37° 33° 34° 35° 35° 34°
    Chance of rain 5% 40% 50% 50% 60% 90% 90%
    Likely amount < 1mm < 1mm 1-5mm 5-10mm 5-10mm 5-10mm 10-20mm
    UV index Extreme Extreme Extreme Extreme Extreme Extreme Extreme
    Fire Danger Rating High High High High - - -
    Frost risk Nil Nil Nil Nil Nil Nil Nil
      9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm
    Wind speed 24
    (km/h)     		33
    (km/h)     		29
    (km/h)     		35
    (km/h)     		28
    (km/h)     		31
    (km/h)     		24
    (km/h)     		25
    (km/h)     		23
    (km/h)     		25
    (km/h)     		21
    (km/h)     		25
    (km/h)     		19
    (km/h)     		25
    (km/h)
    Wind direction E ESE ESE ESE ESE ESE ESE ESE E E E E ENE E
    Relative humidity 46% 20% 58% 36% 67% 49% 73% 50% 75% 51% 76% 56% 76% 62%
    Dew point 18°C 13°C 20°C 19°C 19°C 20°C 21°C 21°C 22°C 22°C 23°C 24°C 23°C 24°C

  9. 28 Day Rainfall forecast

  10. 12 Month Rainfall Forecast

    Mount Isa Rain Forecast

    Mount Isa 12-month Rainfall Forecast
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    2025
    6
    8
    6
    8
    8
    8
    8
    8
    10
    8
    8
    7
    10
    5
    0
    1
    2 - 3
    4 - 7
    8 - 9
    10
    Well below normal
    Below normal
    Near normal
    Above normal
    Well above normal

    Issue Notes - Issued Jan 14

    ENSO status: La Niña-like conditions. IOD status: Neutral. SAM status: Negative. Trending slightly negative. The El Niño Southern Oscillation (ENSO) is in a La Niña-like pattern. Recent conditions show some atmosphere-ocean coupling, resulting in the US declaring a La Niña event has started. A La Niña typically increases rainfall over northern and eastern Australia, while reducing rainfall over southern coastal Australia and western Tas. The Indian Ocean Dipole (IOD) is in a neutral phase and does not play a part in Australia's climate during this time of year. The Southern Annular Mode (SAM) is in a negative phase. Recent forecasts show negative SAM is more likely to dominate for the remainder of summer, due to the polar vortex taking an unusually long time to recover from the stratospheric warming event in winter 2024. During summer, a negative SAM decreases rainfall over most of southeastern Australia, and increases rainfall for far southwest WA and western Tas. Rainfall outlooks are showing above average rainfall over large parts of the country during summer, with closer to average conditions for the southwest corner of WA, southern SA and Vic, and central parts of Tas.

  11. Popup - Daily historical

  12. Long range rainfall forecast

  13. Past 5 Days

    Mount Isa Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Monday
    Jan 27     		26.7 °C 40.7 °C
    0.0 mm
    Tuesday
    Jan 28     		26.3 °C 41.7 °C
    0.0 mm
    Wednesday
    Jan 29     		27.1 °C 42.0 °C
    0.0 mm
    Thursday
    Jan 30     		23.8 °C 43.1 °C
    1.8 mm
    Friday
    Jan 31     		27.5 °C 42.6 °C
    0.0 mm
    Legend

  14. Almanac

    Almanac

    Mount Isa minimum temp history (20.7266°S, 139.4943°E, 365m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 44.4° 11/01/2025 Coldest this month 15.5° 18/01/2025
    Hottest on record 45.9 29/01/1990 Coldest on record 15.4 04/01/1970
    Hottest this year 44.4° 11/01/2025 Coldest this year 15.5° 18/01/2025
    Long term average 36.5° Long term average 23.8°
    Average this month 41.6° Average this month 23.2°
    Hottest January On Record Avg. max. temp. 39.9° 2013 Coldest January on record Avg. min. temp. 21.1° 2000
    Mount Isa rainfall history (20.7266°S, 139.4943°E, 365m AMSL)
    RAINFALL
    Wettest This Month 5.0mm 15/01/2025 Total This Month 8.4mm
    5.0 days
    Long Term Average 115.9mm 10.0 days Wettest January on record 535.2mm 2009
    Driest on record 0.2mm 1985

  15. Year to Date

    Mount Isa Year To Date

    Average Rainfall To Jan 115.9mm 10.0 day(s)
    Total For 2025 8.4mm 5.0 day(s)
    Total To This Day 2024 195.6mm 17.0 day(s)
    Wettest Day 5.0mm Jan15
    Lowest Temperature 15.5°C Jan18
    Highest Temperature 44.4°C Jan11

  16. Popup - Radar

    Weather Radar for Australia

  17. Popup - Monthly historical

  18. Climatology

    Climate History

    Mount Isa Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 36.5 35.5 34.5 32.1 28.0 25.1 24.9 27.6 31.6 35.0 36.7 37.4 32.0
    Mean Min (°C) 23.8 23.3 21.8 18.4 13.9 10.0 8.7 10.1 14.3 18.5 21.5 23.1 17.3
    Mean Rain (mm) 115.9 101.3 68.3 13.1 11.2 6.9 7.5 3.3 8.5 19.1 39.5 66.7 467.0
    Mean Rain Days 10.0 8.9 5.8 2.0 1.6 1.1 1.0 0.9 1.7 3.3 5.5 7.6 49.6

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