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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
    Frost then sunny 12°
    frost then sunny
    Chance of rain: 5%
    Likely amount: < 1mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    6:40am EST 7:09am EST 5:17pm EST 5:46pm EST
    NOW
    7.2° Feels Like: 2.2°
    Relative Humidity: 69%
    Dew: 1.9°
    Wind: S 17km/h
    Gust: 20km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1012.1hPa
  3. Today Weather

    St Helens
    Now
    7.9°c
    Feels Like:
    -1.8°
    Wind:
    SW 43km/h
    Gusts:
    48km/h
    Humidity:
    77%
    Frost then sunny
     
    Min
    12°
    Max
    Today in St Helens
    Cloudy. Areas of morning frost. High chance of light showers in the south, slight chance elsewhere. Snow falling above 800 metres. Winds SW 25 to 40 km/h. Overnight temperatures falling to between minus 1 and 4 above zero with daytime temperatures reaching between 6 and 11.
    Tomorrow
    Showers
    Min
    12°
    Max
    Partly cloudy. Areas of morning frost about higher ground. High chance of light showers, most likely in the afternoon and evening. Winds SW 15 to 20 km/h tending S in the middle of the day then becoming light in the late afternoon. Overnight temperatures falling to between minus 3 and 3 above zero with daytime temperatures reaching between 7 and 12.
  4. Radar

  5. Popup Radar

  6. Warnings

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Cloudy. Areas of morning frost. High chance of light showers in the south, slight chance elsewhere. Snow falling above 800 metres. Winds SW 25 to 40 km/h. Overnight temperatures falling to between minus 1 and 4 above zero with daytime temperatures reaching between 6 and 11.

    Forecast for St Helens (41.3205°S, 148.2493°E, 5m AMSL)
      Thu Fri Sat Sun Mon Tue Wed
    Summary Frost then sunny Showers Possible shower Mostly sunny Mostly sunny Possible shower Showers
    Minimum
    Maximum 12° 12° 13° 13° 13° 14° 14°
    Chance of rain 5% 40% 50% 40% 30% 90% 90%
    Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm 1-5mm 5-10mm
    UV index Low Low Low Low - - -
    Frost risk Slight Moderate Nil Slight Moderate Moderate Nil
      9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm
    Wind speed 22
    (km/h)
    19
    (km/h)
    14
    (km/h)
    20
    (km/h)
    16
    (km/h)
    16
    (km/h)
    17
    (km/h)
    18
    (km/h)
    14
    (km/h)
    12
    (km/h)
    12
    (km/h)
    15
    (km/h)
    18
    (km/h)
    18
    (km/h)
    Wind direction SW SSW SW SSE SE SE S SSE SSW SE NNW N NNW N
    Relative humidity 72% 59% 75% 70% 72% 70% 76% 67% 74% 67% 80% 67% 85% 80%
    Dew point 4°C 4°C 3°C 6°C 6°C 7°C 5°C 7°C 3°C 6°C 7°C 8°C 9°C 10°C
  9. 28 Day Rainfall forecast

    St Helens Rain Forecast


    St Helens 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    6
    LOW
    7
    8
    LOW
    9
    10
    LOW
    11
    12
    13
    14
    MEDIUM
    15
    HIGH
    16
    MEDIUM
    17
    LOW
    18
    LOW
    19
    20
    21
    22
    23
    LOW
    24
    LOW
    25
    MEDIUM
    26
    27
    28
    LOW
    29
    30
    MEDIUM
    31
    MEDIUM
    Sep 1
    LOW
    2
    3
    LOW
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Aug 5

    Issue Notes

    The hemispheric long wave pattern has remained stable in recent weeks. There are six main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, eastern Australia, New Zealand, and South America.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 14 August to 18 August, 23 August to 27 August, and 28 August to 1 September. Rain events originating in the tropics and moving south are possible about 10 August to 14 August, 19 August to 23 August, and 6 September to 10 September. Over Western Australia the strongest cold fronts should occur about 12 August to 16 August, 21 August to 25 August, and 28 August to 1 September.

    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
    Aug
    Sep
    Oct
    Nov
    Dec
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    2020
    2021
    6
    7
    6
    7
    7
    8
    6
    10
    5
    5
    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 Aug 5

    ENSO status: La Nina Watch IOD status: Neutral SAM status: Positive Sea surface temperatures (SSTs) across the equatorial central Pacific show a slight decrease in the intensity of cooling compared to June, with the Nino3.4 index registering a value of 0.0 in July. The Southern Oscillation Index (SOI) recorded a value of 4.2 in the same month, a swing into positive values compared to June. The current outlook suggests that cooler than average SSTs will continue across the equatorial pacific through the end of winter and potentially reach La Nina thresholds by mid-spring. All eight international models continue to suggest a cooler side of neutral for the region throughout the remainder of the Austral winter and through spring, with four of these indicating La Nina by Spring. The current International Research Institute for Climate and Society (IRI) outlook suggests a 54:41 chance for La Nina:Neutral conditions by the end of the Austral spring. To the west of Australia, the Indian Ocean Dipole (IOD) remains neutral. Two of the six international models indicate a negative IOD becoming established during the Austral spring, with the remaining four indicating a neutral phase. Of the four neutral models, including the BOM, three are trending slightly negative within the neutral zone by early spring, with only the Canadian model trending positive. In terms of precipitation over Australia, the current short-term outlook favours above average rainfall across most of Australia over the next fortnight, with the exception of western TAS, far southern VIC, and northern QLD and the NT. These expected wetter than average conditions will likely be due to the passage of moisture troughs inland and fronts, in part driven by the positive SAM. Models are then indicating a continued trend to above average rainfall for inland SA, all but the far north of the NT, western, central and southern QLD, northern and western NSW and parts of southern WA. Parts of WA’s Pilbara and Kimberley however are showing signs of below average rainfall into early spring.

  11. Long range rainfall forecast

    St Helens Rain Forecast


    St Helens 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    6
    LOW
    7
    8
    LOW
    9
    10
    LOW
    11
    12
    13
    14
    MEDIUM
    15
    HIGH
    16
    MEDIUM
    17
    LOW
    18
    LOW
    19
    20
    21
    22
    23
    LOW
    24
    LOW
    25
    MEDIUM
    26
    27
    28
    LOW
    29
    30
    MEDIUM
    31
    MEDIUM
    Sep 1
    LOW
    2
    3
    LOW
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Aug 5

    Issue Notes

    The hemispheric long wave pattern has remained stable in recent weeks. There are six main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, eastern Australia, New Zealand, and South America.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 14 August to 18 August, 23 August to 27 August, and 28 August to 1 September. Rain events originating in the tropics and moving south are possible about 10 August to 14 August, 19 August to 23 August, and 6 September to 10 September. Over Western Australia the strongest cold fronts should occur about 12 August to 16 August, 21 August to 25 August, and 28 August to 1 September.

    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
    Saturday
    Aug 01
    4.7 °C 15.4 °C
    0.0 mm
    Sunday
    Aug 02
    11.0 °C 15.2 °C
    0.0 mm
    Monday
    Aug 03
    9.5 °C 12.4 °C
    0.0 mm
    Tuesday
    Aug 04
    3.2 °C 10.2 °C
    0.8 mm
    Wednesday
    Aug 05
    2.3 °C 11.3 °C
    5.0 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 15.4° 01/08/2020 Coldest this month 2.3° 05/08/2020
    Hottest on record 20.9 29/08/2005 Coldest on record -1.0 16/08/2004
    Hottest this year 36.1° 30/01/2020 Coldest this year 0.1° 09/06/2020
    Long term average 14.3° Long term average 5.2°
    Average this month 12.5° Average this month 6.1°
    Hottest August On Record Avg. max. temp. 15.5° 2006 Coldest August on record Avg. min. temp. 3.7° 2015
    St Helens rainfall history (41.3205°S, 148.2493°E, 5m AMSL)
    RAINFALL
    Wettest This Month 0.8mm 04/08/2020 Total This Month 0.8mm
    1.0 days
    Long Term Average 64.7mm 15.3 days Wettest August on record 184.8mm 2011
    Driest on record 2.6mm 2006
  15. Popup - Radar

    Weather Radar for TAS

  16. Year to Date

    St Helens Year To Date

    Average Rainfall To Aug 484.9mm 103.9 day(s)
    Total For 2020 406.2mm 93.0 day(s)
    Total To This Day 2019 207.6mm 76.0 day(s)
    Wettest Day 56.4mm Feb19
    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