You do not have a default location set
To set your location please use the search box to find your location and then click "set as my default location" on the local weather page.

Forecast

Derby (17.3048°S, 123.6325°E, 10m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TOMORROW
    Mostly sunny 27° 37°
    mostly sunny
    Chance of rain: 40%
    Likely amount: 1-5mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    5:19am WST 5:41am WST 6:18pm WST 6:40pm WST
    NOW
    32.7° Feels Like: 37.6°
    Relative Humidity: 73%
    Dew: 27.4°
    Wind: NNW 15km/h
    Gust: 17km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1006.6hPa
  3. Today Weather

    Derby
    Now
    31.2°c
    Feels Like:
    36.5°
    Wind:
    NNW 9km/h
    Gusts:
    9km/h
    Humidity:
    74%
    Mostly sunny
     
    27°
    Min
    37°
    Max
    Today in Derby
    Partly cloudy. Medium chance of showers inland, slight chance elsewhere. The chance of a thunderstorm. Winds NW/SW 15 to 25 km/h becoming light in the late evening. Overnight temperatures falling to the mid to high 20s with daytime temperatures reaching 34 to 40.
    Tomorrow
    Mostly sunny
    27°
    Min
    37°
    Max
    Partly cloudy. Slight chance of a shower in the afternoon and early evening. The chance of a thunderstorm. Winds W/SW 15 to 20 km/h tending SE/SW in the middle of the day then tending NW/SW in the early afternoon. Overnight temperatures falling to the mid to high 20s with daytime temperatures reaching 34 to 40.
  4. Radar

  5. Popup Radar

  6. Warnings

    There are no current warnings for Derby

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Partly cloudy. Medium chance of showers inland, slight chance elsewhere. The chance of a thunderstorm. Winds NW/SW 15 to 25 km/h becoming light in the late evening. Overnight temperatures falling to the mid to high 20s with daytime temperatures reaching 34 to 40.

    Forecast for Derby (17.3048°S, 123.6325°E, 10m AMSL)
      Tue Wed Thu Fri Sat Sun Mon
    Summary Mostly sunny Mostly sunny Mostly sunny Mostly sunny Mostly sunny Mostly sunny Mostly sunny
    Minimum 27° 26° 26° 26° 26° 26° 27°
    Maximum 37° 37° 37° 37° 38° 37° 38°
    Chance of rain 40% 10% 20% 30% 30% 10% 20%
    Likely amount 1-5mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm
    UV index Extreme Extreme Extreme Extreme - - -
    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 16
    (km/h)
    27
    (km/h)
    13
    (km/h)
    21
    (km/h)
    12
    (km/h)
    21
    (km/h)
    14
    (km/h)
    16
    (km/h)
    14
    (km/h)
    16
    (km/h)
    13
    (km/h)
    16
    (km/h)
    15
    (km/h)
    20
    (km/h)
    Wind direction WNW NNW WNW NNW WSW NNW WSW WNW SW NW SW NW W N
    Relative humidity 66% 52% 69% 51% 68% 51% 67% 48% 68% 47% 63% 44% 61% 41%
    Dew point 24°C 26°C 25°C 25°C 24°C 25°C 24°C 24°C 24°C 24°C 23°C 23°C 24°C 23°C
  9. 28 Day Rainfall forecast

    Derby Rain Forecast


    Derby 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    17
    LOW
    18
    LOW
    19
    LOW
    20
    LOW
    21
    LOW
    22
    LOW
    23
    24
    LOW
    25
    LOW
    26
    27
    28
    29
    Mar 1
    LOW
    2
    LOW
    3
    LOW
    4
    LOW
    5
    6
    7
    8
    9
    10
    11
    12
    LOW
    13
    14
    15
    16
    17
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Feb17

    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 southwest Indian Ocean, Western Australia, New Zealand, the south Pacific, and the Atlantic Ocean.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 24 February to 28 February, 28 February to 3 March, and 22 March to 26 March. Rain events originating in the tropics and moving south are possible about 22 February to 26 February, and 27 February to 2 March. Over Western Australia the strongest cold fronts should occur about 24 February to 28 February, 28 February to 3 March, and 7 March to 11 March.

    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

    Derby Rain Forecast


    Derby 12-month Rainfall Forecast
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Jan
    2020
    2021
    4
    6
    9
    7
    8
    9
    8
    10
    9
    5
    7
    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 Feb 12

    ENSO status: Neutral IOD status: Neutral SAM status: Trending neutral Sea surface temperatures (SSTs) across the equatorial central Pacific remained stable throughout January with the Nino3.4 index registering a value of 0.4 as per December. On the other hand, the Southern Oscillation Index (SOI) recorded a value of 1.3 in January. The current outlook suggests warmer than average SSTs will persist across the equatorial Pacific Ocean through the austral autumn, cooling even further by mid 2020. Six out of eight international models continue to maintain a warmer than average equatorial Pacific Ocean through the first half of the year, none of these reaching El Nino thresholds. To the west of Australia, the Indian Ocean Dipole (IOD) remains neutral, which is what you will expect for this time of the year. All six international models maintain neutral IOD values until the austral winter, with indications we could see another positive event late winter/spring. However, the skill of the models is low at this time of the year. In terms of rainfall across Australia, the current outlook favours average-to-below average rainfall for parts of inland NSW and Qld for the end of summer and autumn. This however, excludes any extreme weather events such as tropical cyclones or East Coast Lows. Across the north, the North Australian Monsoon (NAM) had its latest onset on record in early February at Darwin (by its technical definition) with the current prognosis suggesting another below average wet season for northern Australia. The northern half of the country however, could see a wet end to the wet season compared to the season thus far. Looking further ahead, with no significant signature from ENSO, there are no significant climate drivers tilting the balance towards a drier or wetter end of autumn/winter.

  11. Long range rainfall forecast

    Derby Rain Forecast


    Derby 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    17
    LOW
    18
    LOW
    19
    LOW
    20
    LOW
    21
    LOW
    22
    LOW
    23
    24
    LOW
    25
    LOW
    26
    27
    28
    29
    Mar 1
    LOW
    2
    LOW
    3
    LOW
    4
    LOW
    5
    6
    7
    8
    9
    10
    11
    12
    LOW
    13
    14
    15
    16
    17
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Feb17

    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 southwest Indian Ocean, Western Australia, New Zealand, the south Pacific, and the Atlantic Ocean.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 24 February to 28 February, 28 February to 3 March, and 22 March to 26 March. Rain events originating in the tropics and moving south are possible about 22 February to 26 February, and 27 February to 2 March. Over Western Australia the strongest cold fronts should occur about 24 February to 28 February, 28 February to 3 March, and 7 March to 11 March.

    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

    Derby Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Thursday
    Feb 13
    27.6 °C 37.0 °C
    2.4 mm
    Friday
    Feb 14
    27.5 °C 36.0 °C
    0.0 mm
    Saturday
    Feb 15
    27.5 °C 36.5 °C
    0.0 mm
    Sunday
    Feb 16
    27.5 °C 37.7 °C
    0.0 mm
    Monday
    Feb 17
    25.4 °C 37 °C
    0.0 mm
    Legend
  14. Almanac

    Almanac


    Derby minimum temp history (17.3048°S, 123.6325°E, 10m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 40.6° 03/02/2020 Coldest this month 25.5° 06/02/2020
    Hottest on record 43.8 22/02/1996 Coldest on record 19.2 06/02/1977
    Hottest this year 40.6° 03/02/2020 Coldest this year 24.4° 05/01/2020
    Long term average 34.5° Long term average 25.4°
    Average this month 36.0° Average this month 27.2°
    Hottest February On Record Avg. max. temp. 38.7° 2016 Coldest February on record Avg. min. temp. 24.1° 1976
    Derby rainfall history (17.3048°S, 123.6325°E, 10m AMSL)
    RAINFALL
    Wettest This Month 44.0mm 05/02/2020 Total This Month 56.2mm
    3.0 days
    Long Term Average 211.1mm 12.6 days Wettest February on record 445.4mm 2003
  15. Popup - Radar

    Weather Radar for WA

  16. Year to Date

    Derby Year To Date

    Average Rainfall To Feb 413.6mm 25.8 day(s)
    Total For 2020 404.6mm 17.0 day(s)
    Total To This Day 2019 196.6mm 19.0 day(s)
    Wettest Day 152.8mm Jan 7
    Lowest Temperature 24.4°C Jan 5
    Highest Temperature 40.6°C Feb 3
  17. Popup - Monthly historical

  18. Climatology

    Climate History

    Derby Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 35.2 34.5 35.3 35.7 32.9 30.5 30.7 32.6 35.4 37.2 38.2 37.2 34.6
    Mean Min (°C) 25.7 25.4 25.1 22.8 18.9 15.8 14.8 15.9 19.4 23.2 25.5 26.3 21.5
    Mean Rain (mm) 202.5 211.1 140.3 20.3 18.6 6.9 6.7 1.2 1.0 2.7 10.5 78.0 682.0
    Mean Rain Days 13.2 12.6 10.1 2.9 1.6 1.0 0.6 0.2 0.1 1.0 2.0 7.4 46.5