Forecast
Postans (32.2197°S, 115.8057°E, 29m AMSL) set as my default location ›
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My MLA
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Current condition
TODAY14° 21° mostly sunny Chance of rain: 5% Likely amount: < 1mm First
lightLast light Sunrise Sunset 6:15am WST 6:40am WST 5:52pm WST 6:16pm WST NOW17.5° Feels Like: 16.2° Relative Humidity: 79% Dew: 13.8° Wind: SE 13km/h Gust: 15km/h Rainfall since 9am: 0.0mm Pressure: 1020.9hPa -
Today Weather
PostansNow14.5°cFeels Like:15.1°Wind:N 0km/hGusts:0km/hHumidity:85%14°Min21°MaxToday in PostansPartly cloudy. Areas of smoke haze in the morning. Light winds becoming S/SW 15 to 20 km/h in the middle of the day then becoming light in the evening. Daytime maximum temperatures in the low to mid 20s.Tomorrow15°Min22°MaxMostly sunny. Light winds becoming S 15 to 20 km/h in the early afternoon then becoming light in the late evening. Overnight temperatures falling to between 9 and 12 with daytime temperatures reaching the low to high 20s. -
Radar
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Popup Radar
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Warnings
There are no current warnings for Postans
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7 day forecast
Today: Partly cloudy. Areas of smoke haze in the morning. Light winds becoming S/SW 15 to 20 km/h in the middle of the day then becoming light in the evening. Daytime maximum temperatures in the low to mid 20s.
Forecast for Postans (32.2197°S, 115.8057°E, 29m AMSL) Mon Tue Wed Thu Fri Sat Sun Summary Minimum 14° 15° 14° 14° 16° 19° 18° Maximum 21° 22° 24° 24° 26° 27° 29° Chance of rain 5% 5% 5% 5% 5% 5% 5% Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm UV index High 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 13
(km/h)19
(km/h)13
(km/h)17
(km/h)15
(km/h)14
(km/h)21
(km/h)9
(km/h)20
(km/h)6
(km/h)18
(km/h)9
(km/h)16
(km/h)7
(km/h)Wind direction SSE SW E SW SE S E SE ENE S NE NW ENE NNW Relative humidity 73% 51% 74% 57% 68% 39% 70% 41% 54% 36% 41% 38% 40% 30% Dew point 12°C 11°C 13°C 13°C 11°C 9°C 11°C 10°C 9°C 10°C 8°C 12°C 8°C 10°C -
28 Day Rainfall forecast
Postans Rain Forecast
Postans 28-day Rainfall ForecastSUNMONTUEWEDTHUFRISAT19
20
21
22
23
24
25
26
LOW27
28
LOW29
LOW30
LOWMay 1
MEDIUM2
LOW3
4
LOW5
LOW6
LOW7
8
9
10
11
MEDIUM12
MEDIUM13
MEDIUM14
MEDIUM15
MEDIUM16
MEDIUM17
LOWCHANCE OF RAINFALL WITHIN DISTRICTNIL < 25%LOW 25% to 50%MEDIUM 50% to 75%HIGH ≥ 75%Issued Apr19Issue Notes
The hemispheric long wave pattern has remained stable in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, New Zealand, the southeast 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 1 May to 5 May, 6 May to 10 May, and 16 May to 20 May. Rain events originating in the tropics and moving south are possible about 2 May to 6 May. Over Western Australia the strongest cold fronts should occur about 6 May to 10 May, 16 May to 20 May, and 20 May to 24 May.
Forecast ExplanationThis 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.
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12 Month Rainfall Forecast
Postans Rain Forecast
Postans 12-month Rainfall ForecastAprMayJunJulAugSepOctNovDecJanFebMar20212022565667588877105012 - 34 - 78 - 910Well below normalBelow normalNear normalAbove normalWell above normalIssue Notes - Issued Apr 14
ENSO status: Neutral. IOD status: Neutral, potentially trending negative during winter. SAM status: Positive. La Niña has concluded, with neutral conditions expected until at least the end of Autumn. A few models are predicting La Niña conditions to return later this year, while the majority of models predict neutral conditions. While La Niña has returned to neutral, the oceans around northern Australia are warmer than normal. This is expected to generate above normal rainfall for much of Australia during the next month or so. Some models are suggesting a negative Indian Ocean Dipole (IOD) may develop during winter, which would increase rainfall across parts of Australia during winter. During Autumn, many parts of Australia are likely to be wetter than normal, due to warmer waters off the northern coast of Australia. Southern parts of SA, VIC, most of TAS and southwest WA are likely to observe normal precipitation for the time of year. During winter, much of the Australia is likely to bewetter than normal, apart from far southwestern WA, southern VIC and much of TAS. The negative IOD may be playing a part in this, potentially feeding moisture into cold fronts sweeping across Australia's snowfields. Therefore a normal to above normal snow season is forecast.
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Long range rainfall forecast
Postans Rain Forecast
Postans 28-day Rainfall ForecastSUNMONTUEWEDTHUFRISAT19
20
21
22
23
24
25
26
LOW27
28
LOW29
LOW30
LOWMay 1
MEDIUM2
LOW3
4
LOW5
LOW6
LOW7
8
9
10
11
MEDIUM12
MEDIUM13
MEDIUM14
MEDIUM15
MEDIUM16
MEDIUM17
LOWCHANCE OF RAINFALL WITHIN DISTRICTNIL < 25%LOW 25% to 50%MEDIUM 50% to 75%HIGH ≥ 75%Issued Apr19Issue Notes
The hemispheric long wave pattern has remained stable in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of South Africa, the Indian Ocean, New Zealand, the southeast 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 1 May to 5 May, 6 May to 10 May, and 16 May to 20 May. Rain events originating in the tropics and moving south are possible about 2 May to 6 May. Over Western Australia the strongest cold fronts should occur about 6 May to 10 May, 16 May to 20 May, and 20 May to 24 May.
Forecast ExplanationThis 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.
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Popup - Daily historical
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Past 5 Days
Postans Past 5 Days
This MonthMinimum Maximum Rainfall Wednesday
Apr 1412.2 °C 21.0 °C 0.0 mmThursday
Apr 1513.8 °C 21.8 °C 0.0 mmFriday
Apr 1614.0 °C 26.0 °C 0.0 mmSaturday
Apr 1714.8 °C 24.4 °C 0.0 mmSunday
Apr 1814.6 °C 26.9 °C 0.0 mmLegend -
Almanac
Almanac
Postans minimum temp history (32.2197°S, 115.8057°E, 29m AMSL) MAXIMUM TEMPERATURE MINIMUM TEMPERATURE Hottest this month 31.7° 01/04/2021 Coldest this month 12.2° 14/04/2021 Hottest on record 35.7 08/04/2013 Coldest on record 7.5 28/04/2007 Hottest this year 39.5° 08/01/2021 Coldest this year 12.2° 14/04/2021 Long term average 23.8° Long term average 16.1° Average this month 25.1° Average this month 16.4° Hottest April On Record Avg. max. temp. 26.0° 2011 Coldest April on record Avg. min. temp. 14.3° 2006 Postans rainfall history (32.2197°S, 115.8057°E, 29m AMSL) RAINFALL Wettest This Month 20.8mm 12/04/2021 Total This Month 35.8mm
7.0 daysLong Term Average 35.8mm 8.5 days Wettest April on record 134.8mm 2008 Driest on record 0.0mm 2017 -
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Year to Date
Postans Year To Date
Average Rainfall To Apr 82.7mm 17.6 day(s) Total For 2021 125.8mm 26.0 day(s) Total To This Day 2020 51.8mm 20.0 day(s) Wettest Day 36.6mm Feb 7 Lowest Temperature 12.2°C Apr14 Highest Temperature 39.5°C Jan 8 -
Popup - Monthly historical
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Climatology
Climate History
Postans Climatology
Postans Long-Term Averages
Long-Term Averages Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Mean Max (°C) 27.3 28.2 27.0 23.8 21.4 19.1 17.9 18.1 18.9 21.0 23.8 25.6 22.7 Mean Min (°C) 19.0 19.4 18.3 16.1 13.8 12.2 11.2 11.2 12.0 13.7 15.7 17.3 15.0 Mean Rain (mm) 14.1 17.0 15.8 35.8 72.5 109.9 116.4 95.8 62.7 27.7 22.1 9.9 598.0 Mean Rain Days 2.6 2.2 4.3 8.5 11.6 15.6 19.1 17.4 15.2 9.3 6.2 3.8 114.6