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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

    TODAY
    Mostly sunny 19° 31°
    mostly sunny
    Chance of rain: 20%
    Likely amount: < 1mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    6:28am EST 6:50am EST 6:40pm EST 7:02pm EST
    NOW
    26.8° Feels Like: 26.5°
    Relative Humidity: 60%
    Dew: 18.4°
    Wind: SE 17km/h
    Gust: 30km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1015.6hPa
  3. Today Weather

    Mount Isa
    Now
    26.3°c
    Feels Like:
    26.3°
    Wind:
    SE 15km/h
    Gusts:
    22km/h
    Humidity:
    61%
    Mostly sunny
     
    19°
    Min
    31°
    Max
    Today in Mount Isa
    Partly cloudy. Medium chance of showers in the NE, near zero chance elsewhere. The chance of a thunderstorm in the NE. Winds SE 15 to 25 km/h. Daytime maximum temperatures in the low 30s.
    Tomorrow
    Mostly sunny
    19°
    Min
    30°
    Max
    Partly cloudy. Slight chance of a shower. The chance of a thunderstorm in the NE. Winds SE 20 to 30 km/h. Overnight temperatures falling to between 18 and 22 with daytime temperatures reaching the low 30s.
  4. Radar

  5. Popup Radar

  6. Warnings

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Partly cloudy. Medium chance of showers in the NE, near zero chance elsewhere. The chance of a thunderstorm in the NE. Winds SE 15 to 25 km/h. Daytime maximum temperatures in the low 30s.

    Forecast for Mount Isa (20.7266°S, 139.4943°E, 365m AMSL)
      Fri Sat Sun Mon Tue Wed Thu
    Summary Mostly sunny Mostly sunny Mostly sunny Sunny Sunny Sunny Mostly sunny
    Minimum 19° 19° 20° 20° 19° 18° 18°
    Maximum 31° 30° 32° 33° 33° 33° 33°
    Chance of rain 20% 5% 5% 5% 5% 5% 5%
    Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm
    UV index Extreme Extreme Extreme Extreme Extreme Extreme Extreme
    Fire Danger Rating Moderate Moderate Moderate Moderate - - -
    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 19
    (km/h)
    16
    (km/h)
    20
    (km/h)
    21
    (km/h)
    20
    (km/h)
    20
    (km/h)
    22
    (km/h)
    22
    (km/h)
    20
    (km/h)
    21
    (km/h)
    18
    (km/h)
    21
    (km/h)
    17
    (km/h)
    20
    (km/h)
    Wind direction SE SE SE SE SE SE SE SE ESE ESE ESE ESE ESE SE
    Relative humidity 63% 51% 60% 48% 58% 46% 59% 40% 61% 40% 62% 35% 61% 38%
    Dew point 18°C 19°C 15°C 16°C 15°C 18°C 16°C 17°C 17°C 17°C 16°C 14°C 16°C 16°C
  9. 28 Day Rainfall forecast

  10. 12 Month Rainfall Forecast

    Mount Isa Rain Forecast


    Mount Isa 12-month Rainfall Forecast
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Jan
    Feb
    2025
    2026
    9
    9
    9
    9
    9
    8
    8
    7
    8
    9
    6
    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 Mar 28

    ENSO status: Weak La Niña-like conditions. IOD status: Neutral. SAM status: Neutral. The El Niño Southern Oscillation (ENSO) is in a weak La Niña-like pattern. The US declared a La Niña event this summer, but this event has not met the BoM definition, and will likely end in the coming weeks. 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 neutral phase. Forecasts show a tendency towards the positive phase in autumn, with the long-wave pattern indicating that cold fronts are a bit less likely for Australia's longitudes over the next few months. During autumn, a positive SAM increases rainfall over most of eastern Australia, and decreases rainfall for SA, Vic and western Tas. Rainfall outlooks are showing above average rainfall across much of northern Australia in April due to lingering monsoon activity. Above average rainfall is expected for the NSW coast through autumn, with wetter conditions also developing over western WA from late autumn. SA, Vic and Tas are expected to be average to slightly below average, with average conditions elsewhere.

  11. Popup - Daily historical

  12. Long range rainfall forecast

  13. Past 5 Days

    Mount Isa Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Monday
    Mar 31
    21.1 °C 32.8 °C
    0.2 mm
    Tuesday
    Apr 01
    22.3 °C 33.8 °C
    0.0 mm
    Wednesday
    Apr 02
    23.0 °C 28.1 °C
    43.6 mm
    Thursday
    Apr 03
    21.4 °C 28.7 °C
    2.0 mm
    Friday
    Apr 04
    19.2 °C 26.8 °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 33.8° 01/04/2025 Coldest this month 21.4° 03/04/2025
    Hottest on record 38.6 11/04/2003 Coldest on record 5.8 30/04/2017
    Hottest this year 44.4° 11/01/2025 Coldest this year 15.5° 18/01/2025
    Long term average 32.1° Long term average 18.4°
    Average this month 30.0° Average this month 22.2°
    Hottest April On Record Avg. max. temp. 35.1° 2016 Coldest April on record Avg. min. temp. 15.3° 2008
    Mount Isa rainfall history (20.7266°S, 139.4943°E, 365m AMSL)
    RAINFALL
    Wettest This Month 43.6mm 02/04/2025 Total This Month 45.6mm
    2.0 days
    Long Term Average 13.1mm 2.0 days Wettest April on record 167.8mm 2006
    Driest on record 0.0mm 2021
  15. Year to Date

    Mount Isa Year To Date

    Average Rainfall To Apr 298.1mm 26.6 day(s)
    Total For 2025 360.4mm 29.0 day(s)
    Total To This Day 2024 495.2mm 44.0 day(s)
    Wettest Day 75.2mm Feb 7
    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) 36.6 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 23.2 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) 114.1 102.6 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 9.9 8.9 5.8 2.0 1.6 1.1 1.0 0.9 1.7 3.3 5.5 7.6 49.6