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Forecast

Mount William (37.5407°S, 142.7047°E, 255m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TODAY
    Showers 11°
    Chance of rain: 80%
    Likely amount: 1-5mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    5:45am EST 6:11am EST 6:28pm EST 6:54pm EST
    NOW
    4.7° Feels Like: 0.6°
    Relative Humidity: 99%
    Dew: 4.5°
    Wind: SW 15km/h
    Gust: 20km/h
    Rainfall since 9am: 12.0mm
    Pressure: 1040.4hPa
  3. Today Weather

    Mount William
    Now
    6.0°c
    Feels Like:
    1.3°
    Wind:
    SW 15km/h
    Gusts:
    19km/h
    Humidity:
    71%
    Showers
     
    Min
    11°
    Max
    Today in Mount William
    Cloudy. High chance of showers, with possible hail near the coast during the morning. Snow falling above 800 metres at first. Winds SW 20 to 30 km/h decreasing to 15 to 20 km/h in the evening. Daytime maximum temperatures between 10 and 13.
    Tomorrow
    Cloudy
    Min
    13°
    Max
    The chance of fog in the early morning. Cloudy day. Slight chance of a shower, most likely in the early morning. Snow possible above 1100 metres, lifting to above 1200 metres by the afternoon. Winds SW 15 to 20 km/h tending S early in the morning then becoming light in the morning. Overnight temperatures falling to around 4 with daytime temperatures reaching around 13.
  4. Radar

  5. Popup Radar

  6. Warnings

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Cloudy. High chance of showers, with possible hail near the coast during the morning. Snow falling above 800 metres at first. Winds SW 20 to 30 km/h decreasing to 15 to 20 km/h in the evening. Daytime maximum temperatures between 10 and 13.

    Forecast for Mount William (37.5407°S, 142.7047°E, 255m AMSL)
      Sat Sun Mon Tue Wed Thu Fri
    Summary Showers Cloudy Mostly sunny Showers increasing Possible shower Mostly sunny Mostly sunny
    Minimum
    Maximum 11° 13° 15° 17° 17° 20° 24°
    Chance of rain 80% 5% 5% 90% 40% 50% 80%
    Likely amount 1-5mm < 1mm < 1mm 5-10mm < 1mm < 1mm < 1mm
    UV index Moderate High High High High - -
    Frost risk Moderate Moderate High Slight Nil Nil Nil
      9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm
    Wind speed 25
    (km/h)
    24
    (km/h)
    12
    (km/h)
    10
    (km/h)
    6
    (km/h)
    10
    (km/h)
    21
    (km/h)
    23
    (km/h)
    18
    (km/h)
    20
    (km/h)
    16
    (km/h)
    22
    (km/h)
    22
    (km/h)
    23
    (km/h)
    Wind direction SW WSW SSW SSW NE NNE NE NNE N NW NNW NW N NNW
    Relative humidity 77% 68% 76% 56% 71% 58% 69% 62% 88% 66% 82% 65% 72% 58%
    Dew point 3°C 6°C 4°C 5°C 4°C 7°C 6°C 10°C 9°C 10°C 9°C 13°C 11°C 15°C
  9. 28 Day Rainfall forecast

    Mount William Rain Forecast


    Mount William 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    26
    MEDIUM
    27
    28
    29
    HIGH
    30
    MEDIUM
    Oct 1
    LOW
    2
    MEDIUM
    3
    LOW
    4
    HIGH
    5
    LOW
    6
    7
    8
    9
    MEDIUM
    10
    LOW
    11
    12
    LOW
    13
    MEDIUM
    14
    MEDIUM
    15
    16
    LOW
    17
    LOW
    18
    LOW
    19
    LOW
    20
    21
    LOW
    22
    23
    24
    MEDIUM
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Sep25

    Issue Notes

    The hemispheric long wave pattern has been relatively fast moving in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of South Africa, Western Australia, the south Pacific, South America, and the Atlantic Ocean.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 2 October to 6 October, 8 October to 12 October, and 27 October to 31 October. Rain events originating in the tropics and moving south are possible about 23 September to 27 September. Over Western Australia the strongest cold fronts should occur about 30 September to 4 October, 22 October to 26 October, and 27 October to 31 October.

    Forecast Explanation

    This forecast is produced by a multi-model ensemble consisting of dynamical atmospheric models, which are forced by the latest observed atmosphere, ocean, land and ice conditions. The models are designed to simulate features of the real atmosphere, including the daily movement of long and short wave patterns in the Southern Hemisphere.

    The future probability of rain in each district is estimated using output from the multi-model ensemble, combined with historical information about the difference between the model forecasts and observed rainfall.

    In this deterministic framework the skill of the forecast tends to decrease with time, however the forecasts are updated daily to provide the latest estimates of rainfall probability out to 28 days.

  10. 12 Month Rainfall Forecast

    Mount William Rain Forecast


    Mount William 12-month Rainfall Forecast
    Sep
    Oct
    Nov
    Dec
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    2020
    2021
    3
    7
    7
    7
    8
    7
    8
    5
    4
    6
    4
    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 Sep 9

    ENSO status: La Niña Alert IOD status: Negative SAM status: Negative trending positive Sea surface temperatures (SSTs) across the equatorial central Pacific have continued to cool through August, with the Nino3.4 index registering a value of -0.5. The Southern Oscillation Index (SOI) recorded a value of 9.8 in the same month, a significant increase compared to July, tipping over the La Niña threshold of +7. The current outlook suggests that cooler than average SSTs will continue across the equatorial pacific during the Austral spring, with a high chance of a weak La Niña forming. All eight international models continue to suggest further cooling during spring, with three of these indicating La Niña conditions in September. A further two exceeding the La Niña threshold in October, with six of the eight indicating La Niña by November. The current International Research Institute for Climate and Society (IRI) outlook suggests a 57:41 chance for La Niña:Neutral conditions by the end of the Australspring. To the west of Australia, the Indian Ocean Dipole (IOD) has shifted into a negative phase. Four of the six international models indicate a negative IOD to be sustained for the duration of the Austral spring, with the remaining two indicating a neutral phase. Both of the models that indicate a neutral phase trend towards the negative side of neutral. In terms of precipitation over Australia, the current short term outlook favours above average rainfall over the interior over the remainder of the first month of spring, particularly eastern WA and the Kimberley, western NT and western SA Above average rainfall is also favoured, although not as pronounced, over inland NSW and QLD and parts of the NSW and VIC coastal area. Drier than average conditions are expected across western WA as well as parts of northern coastal QLD and parts of the southeast. The remainder of spring is then likely to be wetter than average for NSW, QLD, VIC, SA, TAS, the NT and eastern WA, whilst drier than averageconditions look to persist further west. There are then indications of increased rainfall over WA toward the end of spring and into early summer, with the eastern two thirds of the country remaining wetter than average.

  11. Long range rainfall forecast

    Mount William Rain Forecast


    Mount William 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    26
    MEDIUM
    27
    28
    29
    HIGH
    30
    MEDIUM
    Oct 1
    LOW
    2
    MEDIUM
    3
    LOW
    4
    HIGH
    5
    LOW
    6
    7
    8
    9
    MEDIUM
    10
    LOW
    11
    12
    LOW
    13
    MEDIUM
    14
    MEDIUM
    15
    16
    LOW
    17
    LOW
    18
    LOW
    19
    LOW
    20
    21
    LOW
    22
    23
    24
    MEDIUM
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Sep25

    Issue Notes

    The hemispheric long wave pattern has been relatively fast moving in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of South Africa, Western Australia, the south Pacific, South America, and the Atlantic Ocean.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 2 October to 6 October, 8 October to 12 October, and 27 October to 31 October. Rain events originating in the tropics and moving south are possible about 23 September to 27 September. Over Western Australia the strongest cold fronts should occur about 30 September to 4 October, 22 October to 26 October, and 27 October to 31 October.

    Forecast Explanation

    This forecast is produced by a multi-model ensemble consisting of dynamical atmospheric models, which are forced by the latest observed atmosphere, ocean, land and ice conditions. The models are designed to simulate features of the real atmosphere, including the daily movement of long and short wave patterns in the Southern Hemisphere.

    The future probability of rain in each district is estimated using output from the multi-model ensemble, combined with historical information about the difference between the model forecasts and observed rainfall.

    In this deterministic framework the skill of the forecast tends to decrease with time, however the forecasts are updated daily to provide the latest estimates of rainfall probability out to 28 days.

  12. Popup - Daily historical

  13. Past 5 Days

    Mount William Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Monday
    Sep 21
    8.2 °C 16.9 °C
    6.4 mm
    Tuesday
    Sep 22
    8.8 °C 14.9 °C
    0.4 mm
    Wednesday
    Sep 23
    7.7 °C 12.8 °C
    1.6 mm
    Thursday
    Sep 24
    3.0 °C 13.1 °C
    0.8 mm
    Friday
    Sep 25
    3.6 °C 9.9 °C
    5.2 mm
    Legend
  14. Almanac

    Almanac


    Mount William minimum temp history (37.5407°S, 142.7047°E, 255m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 22.4° 19/09/2020 Coldest this month -0.9° 01/09/2020
    Hottest on record 28.5 19/09/2006 Coldest on record -2.5 01/09/2015
    Hottest this year 43.3° 31/01/2020 Coldest this year -3.1° 17/07/2020
    Long term average 15.8° Long term average 5.0°
    Average this month 15.7° Average this month 5.4°
    Hottest September On Record Avg. max. temp. 17.1° 2006 Coldest September on record Avg. min. temp. 3.7° 2007
    Mount William rainfall history (37.5407°S, 142.7047°E, 255m AMSL)
    RAINFALL
    Wettest This Month 29.0mm 13/09/2020 Total This Month 68.8mm
    14.0 days
    Long Term Average 50.1mm 17.3 days Wettest September on record 125.8mm 2016
    Driest on record 28.0mm 2014
  15. Popup - Radar

    Weather Radar for VIC

  16. Year to Date

    Mount William Year To Date

    Average Rainfall To Sep 382.2mm 127.2 day(s)
    Total For 2020 450.8mm 135.0 day(s)
    Total To This Day 2019 400.0mm 111.0 day(s)
    Wettest Day 29.0mm Sep13
    Lowest Temperature -3.1°C Jul17
    Highest Temperature 43.3°C Jan31
  17. Popup - Monthly historical

  18. Climatology

    Climate History

    Mount William Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 28.2 27.5 25.1 20.0 15.8 12.9 12.1 13.4 15.8 19.5 23.0 25.8 19.9
    Mean Min (°C) 11.3 11.7 10.1 7.7 6.5 4.4 4.4 4.6 5.0 5.3 7.9 9.2 7.3
    Mean Rain (mm) 46.9 18.3 22.7 37.6 49.8 41.3 57.8 57.7 50.1 41.0 42.5 43.4 507.8
    Mean Rain Days 6.9 6.2 7.8 12.9 17.0 17.5 20.5 21.1 17.3 14.2 11.4 9.3 152.1