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Forecast

St Helens (41.3205°S, 148.2493°E, 5m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TODAY
    Mostly sunny 15°
    mostly sunny
    Chance of rain: 5%
    Likely amount: < 1mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    5:20am EST 5:47am EST 6:09pm EST 6:37pm EST
    NOW
    12.9° Feels Like: 8.0°
    Relative Humidity: 40%
    Dew: -0.4°
    Wind: SW 15km/h
    Gust: 26km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1020.2hPa
  3. Today Weather

    St Helens
    Now
    13.0°c
    Feels Like:
    9.8°
    Wind:
    S 9km/h
    Gusts:
    13km/h
    Humidity:
    52%
    Mostly sunny
     
    Min
    15°
    Max
    Today in St Helens
    Partly cloudy. Areas of morning frost about higher ground. Winds W/SW 25 to 35 km/h. Daytime maximum temperatures between 9 and 14.
    Tomorrow
    Mostly sunny
    Min
    15°
    Max
    Partly cloudy. Areas of frost in the north in the early morning. Slight chance of a shower in the north at night. Near zero chance of rain elsewhere. Winds W 20 to 30 km/h tending SW 15 to 25 km/h in the morning then becoming light in the late afternoon. Overnight temperatures falling to between zero and 5 with daytime temperatures reaching between 11 and 15.
  4. Radar

  5. Popup Radar

  6. Warnings

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Partly cloudy. Areas of morning frost about higher ground. Winds W/SW 25 to 35 km/h. Daytime maximum temperatures between 9 and 14.

    Forecast for St Helens (41.3205°S, 148.2493°E, 5m AMSL)
      Sun Mon Tue Wed Thu Fri Sat
    Summary Mostly sunny Mostly sunny Mostly sunny Showers Possible shower Possible shower Possible shower
    Minimum
    Maximum 15° 15° 15° 17° 17° 19° 19°
    Chance of rain 5% 20% 20% 70% 40% 50% 40%
    Likely amount < 1mm < 1mm < 1mm 1-5mm < 1mm < 1mm 1-5mm
    UV index Moderate Moderate Moderate Moderate Moderate - -
    Frost risk Moderate Slight Nil Nil Nil Nil Nil
      9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm
    Wind speed 18
    (km/h)
    8
    (km/h)
    3
    (km/h)
    11
    (km/h)
    6
    (km/h)
    18
    (km/h)
    16
    (km/h)
    23
    (km/h)
    22
    (km/h)
    26
    (km/h)
    32
    (km/h)
    29
    (km/h)
    26
    (km/h)
    22
    (km/h)
    Wind direction SW WNW W ENE NNE NE N NNW WNW NW NW NW NW WNW
    Relative humidity 51% 45% 57% 58% 72% 67% 84% 79% 58% 55% 70% 61% 61% 51%
    Dew point -0°C 3°C 4°C 6°C 7°C 9°C 13°C 11°C 5°C 7°C 10°C 11°C 9°C 8°C
  9. 28 Day Rainfall forecast

    St Helens Rain Forecast


    St Helens 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    27
    28
    29
    30
    MEDIUM
    Oct 1
    MEDIUM
    2
    MEDIUM
    3
    MEDIUM
    4
    MEDIUM
    5
    MEDIUM
    6
    MEDIUM
    7
    8
    9
    10
    MEDIUM
    11
    LOW
    12
    13
    MEDIUM
    14
    LOW
    15
    MEDIUM
    16
    MEDIUM
    17
    LOW
    18
    MEDIUM
    19
    LOW
    20
    MEDIUM
    21
    HIGH
    22
    MEDIUM
    23
    LOW
    24
    MEDIUM
    25
    MEDIUM
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Sep26

    Issue Notes

    The hemispheric long wave pattern has remained stable in recent weeks. There are four main troughs. Currently the most significant troughs are near the longitudes of the southwest Indian Ocean, the Indian Ocean, Western Australia, and the Atlantic Ocean.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 3 October to 7 October, 14 October to 18 October, and 21 October to 25 October. Rain events originating in the tropics and moving south are possible about 9 October to 13 October. Over Western Australia the strongest cold fronts should occur about 3 October to 7 October, 14 October to 18 October, and 25 October to 29 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

    St Helens Rain Forecast


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

    St Helens Rain Forecast


    St Helens 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    27
    28
    29
    30
    MEDIUM
    Oct 1
    MEDIUM
    2
    MEDIUM
    3
    MEDIUM
    4
    MEDIUM
    5
    MEDIUM
    6
    MEDIUM
    7
    8
    9
    10
    MEDIUM
    11
    LOW
    12
    13
    MEDIUM
    14
    LOW
    15
    MEDIUM
    16
    MEDIUM
    17
    LOW
    18
    MEDIUM
    19
    LOW
    20
    MEDIUM
    21
    HIGH
    22
    MEDIUM
    23
    LOW
    24
    MEDIUM
    25
    MEDIUM
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Sep26

    Issue Notes

    The hemispheric long wave pattern has remained stable in recent weeks. There are four main troughs. Currently the most significant troughs are near the longitudes of the southwest Indian Ocean, the Indian Ocean, Western Australia, and the Atlantic Ocean.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 3 October to 7 October, 14 October to 18 October, and 21 October to 25 October. Rain events originating in the tropics and moving south are possible about 9 October to 13 October. Over Western Australia the strongest cold fronts should occur about 3 October to 7 October, 14 October to 18 October, and 25 October to 29 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

    St Helens Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Wednesday
    Sep 23
    9.4 °C 17.0 °C
    2.4 mm
    Thursday
    Sep 24
    6.2 °C 13.0 °C
    0.4 mm
    Friday
    Sep 25
    3.3 °C 12.9 °C
    0.2 mm
    Saturday
    Sep 26
    6.5 °C 15.8 °C
    23.0 mm
    Sunday
    Sep 27
    4.4 °C 13.2 °C
    0.0 mm
    Legend
  14. Almanac

    Almanac


    St Helens minimum temp history (41.3205°S, 148.2493°E, 5m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 19.9° 07/09/2020 Coldest this month 2.5° 01/09/2020
    Hottest on record 24.0 28/09/2014 Coldest on record -0.1 03/09/2008
    Hottest this year 36.1° 30/01/2020 Coldest this year 0.1° 09/06/2020
    Long term average 16.1° Long term average 6.7°
    Average this month 15.8° Average this month 7.2°
    Hottest September On Record Avg. max. temp. 17.4° 2014 Coldest September on record Avg. min. temp. 4.8° 2003
    St Helens rainfall history (41.3205°S, 148.2493°E, 5m AMSL)
    RAINFALL
    Wettest This Month 23.0mm 26/09/2020 Total This Month 63.8mm
    14.0 days
    Long Term Average 56.2mm 12.1 days Wettest September on record 122.4mm 2009
    Driest on record 21.0mm 2007
  15. Popup - Radar

    Weather Radar for TAS

  16. Year to Date

    St Helens Year To Date

    Average Rainfall To Sep 541.1mm 116.0 day(s)
    Total For 2020 554.6mm 116.0 day(s)
    Total To This Day 2019 345.4mm 100.0 day(s)
    Wettest Day 67.2mm Apr12
    Lowest Temperature 0.1°C Jun 9
    Highest Temperature 36.1°C Jan30
  17. Popup - Monthly historical

  18. Climatology

    Climate History

    St Helens Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 22.8 22.0 21.1 18.5 16.1 14.0 13.5 14.3 16.1 17.5 19.5 21.2 18.1
    Mean Min (°C) 13.3 13.4 11.8 9.6 7.2 5.6 4.9 5.2 6.7 8.0 10.2 11.7 9.0
    Mean Rain (mm) 69.3 55.8 67.8 58.0 51.3 66.8 51.2 64.7 56.2 61.5 89.8 50.9 742.4
    Mean Rain Days 8.6 10.3 9.8 11.6 13.7 17.3 17.3 15.3 12.1 12.1 11.3 10.6 144.4