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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
    Late shower 22° 35°
    late shower
    Chance of rain: 40%
    Likely amount: < 1mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    5:29am EST 5:53am EST 7:13pm EST 7:37pm EST
    NOW
    31.9° Feels Like: 32.7°
    Relative Humidity: 52%
    Dew: 21.1°
    Wind: NE 17km/h
    Gust: 20km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1012.2hPa
  3. Today Weather

    Mount Isa
    Now
    32.2°c
    Feels Like:
    33.9°
    Wind:
    NE 15km/h
    Gusts:
    19km/h
    Humidity:
    54%
    Late shower
     
    22°
    Min
    35°
    Max
    Today in Mount Isa
    Partly cloudy. Medium chance of showers, most likely in the late morning and afternoon. The chance of a thunderstorm. Winds NE 15 to 25 km/h. Daytime maximum temperatures 34 to 39.
    Tomorrow
    Late shower
    22°
    Min
    36°
    Max
    Partly cloudy. Slight chance of a shower. The chance of a thunderstorm. Winds NE 15 to 20 km/h becoming light before dawn then becoming NE 15 to 25 km/h in the morning. Overnight temperatures falling to the low to mid 20s with daytime temperatures reaching the mid to high 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, most likely in the late morning and afternoon. The chance of a thunderstorm. Winds NE 15 to 25 km/h. Daytime maximum temperatures 34 to 39.

    Forecast for Mount Isa (20.7266°S, 139.4943°E, 365m AMSL)
      Thu Fri Sat Sun Mon Tue Wed
    Summary Late shower Late shower Mostly sunny Mostly sunny Mostly sunny Mostly sunny Showers increasing
    Minimum 22° 22° 23° 23° 25° 26° 25°
    Maximum 35° 36° 37° 40° 40° 40° 37°
    Chance of rain 40% 50% 10% 20% 20% 60% 90%
    Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm 1-5mm 5-10mm
    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 17
    (km/h)
    20
    (km/h)
    17
    (km/h)
    21
    (km/h)
    10
    (km/h)
    15
    (km/h)
    7
    (km/h)
    16
    (km/h)
    9
    (km/h)
    15
    (km/h)
    11
    (km/h)
    12
    (km/h)
    10
    (km/h)
    11
    (km/h)
    Wind direction ENE ENE ENE ENE ENE ENE NNE E NNW ENE NNW NNE NW WSW
    Relative humidity 73% 46% 65% 43% 58% 39% 52% 30% 49% 32% 44% 31% 51% 38%
    Dew point 23°C 21°C 22°C 20°C 21°C 20°C 21°C 18°C 21°C 19°C 20°C 19°C 21°C 19°C
  9. 28 Day Rainfall forecast

  10. 12 Month Rainfall Forecast

    Mount Isa Rain Forecast


    Mount Isa 12-month Rainfall Forecast
    Dec
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    2024
    2025
    9
    8
    6
    7
    8
    9
    9
    9
    8
    10
    8
    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 Nov 18

    ENSO status: La Niña Watch. IOD status: Neutral. SAM status: Positive. Trending positive. The El Niño Southern Oscillation (ENSO) is in a La Niña Watch, meaning there is approximately a 50% chance of a La Niña developing this year. The current technical definition of a La Niña is only a small chance to be met, although ocean and atmospheric conditions do resemble a La Niña pattern. Trade winds are still stronger than average along the western equatorial Pacific, and the Nino3.4 is low, but is above the threshold of -0.8C. However, the Relative-Nino Index (factors in equatorial ocean temperatures elsewhere around the world, compensating for the background warming signal) is below the threshold. A La Niña typically increases rainfall over northern and eastern Australia (especially eastern Qld) during summer, but has little effect for WA and SA. The Indian Ocean Dipole (IOD) is in a neutral phase. Recent conditions have been similar to a negative IOD, but this has likely been heavily affected by veryactive bursts of tropical weather in mid-October and mid-late November. Regardless if these conditions continue, the arrival of the monsoon over northern Australia overwrites any IOD effects, so this driver is unlikely to significantly affect Australia this year. The Southern Annular Mode (SAM) is in a positive phase, having switched from the negative phase that persisted from July to October. This positive event is expected to persist through summer as a result of stratospheric moisture from the 2022 Tongan volcanic eruption (similar to the past two summers). A positive SAM decreases the frequency of cold fronts, with more regular high pressure systems and easterly winds. During summer, this increases rainfall over eastern Australia, and reduces rainfall over southeastern SA, western Vic and western Tas. Rainfall outlooks are showing above average rainfall over western, northern and eastern Australia, with strong signals over the Kimberley, Top End and Cape York Peninsula (likely related to forecastmonsoon activity). Drier conditions are expected for western Tas, with average conditions for SA and western Vic.

  11. Popup - Daily historical

  12. Long range rainfall forecast

  13. Past 5 Days

    Mount Isa Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Sunday
    Dec 01
    21.2 °C 36.3 °C
    0.2 mm
    Monday
    Dec 02
    25.9 °C 35.1 °C
    0.0 mm
    Tuesday
    Dec 03
    23.5 °C 37.1 °C
    0.0 mm
    Wednesday
    Dec 04
    23.0 °C 37.1 °C
    21.6 mm
    Thursday
    Dec 05
    25.2 °C 33.0 °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 37.1° 03/12/2024 Coldest this month 21.2° 01/12/2024
    Hottest on record 45.1 01/12/2006 Coldest on record 13.4 07/12/1978
    Hottest this year 43.2° 09/11/2024 Coldest this year -2.1° 19/07/2024
    Long term average 37.4° Long term average 23.1°
    Average this month 36.4° Average this month 23.4°
    Hottest December On Record Avg. max. temp. 39.7° 2002 Coldest December on record Avg. min. temp. 20.1° 2011
    Mount Isa rainfall history (20.7266°S, 139.4943°E, 365m AMSL)
    RAINFALL
    Wettest This Month 21.6mm 04/12/2024 Total This Month 21.8mm
    2.0 days
    Long Term Average 67.2mm 7.5 days Wettest December on record 275.2mm 2000
    Driest on record 0.0mm 2018
  15. Year to Date

    Mount Isa Year To Date

    Average Rainfall To Dec 461.1mm 49.3 day(s)
    Total For 2024 642.0mm 61.0 day(s)
    Total To This Day 2023 634.6mm 50.0 day(s)
    Wettest Day 92.4mm Mar25
    Lowest Temperature -2.1°C Jul19
    Highest Temperature 43.2°C Nov 9
  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 38.8 67.2 463.7
    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 7.5 49.2