Experimental Melbourne CBD Long Range Weather Forecast

Based Upon Statistical Interpretation of NOAA Data

Combined With Human Forecasts

(http://www.arl.noaa.gov/ready.html)

NOAA Data At: 10am, 1-6-2026

Minimum temperatures are for the night/early morning, maximum temperatures are for the daytime,
whilst precipitation amounts and probabilities are for the 24 hours from midnight.

Temperatures for the Melbourne observation site (at Olympic Park) are in brackets.

Day & DateMorningAfternoonMin
Temp
(deg C)
Max
Temp
(deg C)
Precip
Amount
(mm)
Precip
Prob
(%)
9am Wind/
3pm Wind
Melb Apt
(km/hr)
Tue-2-6-2026Rain.
Rain.
11
(10.7)
16.2
(16.8)
696N 33
N 33
Gusts65
Wed-3-6-2026Rain.
Rain.
11.1
(11.3)
15.9
(16.1)
3.186NW 30
W 35
Gusts65
Thu-4-6-2026Rain.
Rain.
9.6
(9.8)
15.1
(14.7)
5.391NW 20
W 25
Gusts55
Fri-5-6-2026Rain.
Rain.
8.5
(8.6)
14.8
(13.8)
3.385WSW 20
SW 25
Gusts55
Sat-6-6-2026Cloudy.
Shower.
8.7
(8.6)
16.8
(16.3)
0.252NW 12
W 15
Gusts40
Sun-7-6-2026Sunny.
Partly Cloudy.
8.8
(8.6)
17.5
(17)
017N 20
N 25
Gusts55
Mon-8-6-2026Partly Cloudy.
Cloudy.
8.6
(8.2)
17
(16.6)
020N 20
N 25
Gusts55
Tue-9-6-2026Windy.
Windy.
10.4
(9.9)
16.3
(16.6)
024N 30
N 35
Gusts75
Wed-10-6-2026Shower.
Shower.
11.6
(11.2)
16.3
(16.6)
1.363N 30
N 35
Gusts75
Thu-11-6-2026Cloudy.
Shower.
11.4
(10.9)
16.9
(17)
1.851N 20
N 25
Gusts55
Fri-12-6-2026Shower.
Rain.
11.7
(11.2)
15.7
(15.7)
4.970N 25
N 25
Gusts55
Sat-13-6-2026Shower.
Shower.
10.2
(10.1)
15.2
(14.4)
2.664WSW 12
SSW 15
Gusts35
Sun-14-6-2026Shower.
Cloudy.
9.9
(9.9)
15.2
(14.1)
270WSW 15
SW 15
Gusts40
Mon-15-6-2026Drizzle.
Cloudy.
9
(8.9)
14.5
(13.7)
1.364WSW 8
SSW 12
Gusts30

The Weather Icons

Acknowledgement: Bureau of Meteorology & World Meteorological Organisation

Sunny
Dry
Haze
Mist
Fog
Partly Cloudy
Cloudy
Windy
Dust

Possible Shower
Drizzle
Shower
Snow
Rain
Thunder
Cyclone

Definitions

IconMeaning
Sunny:Sun shines >75% of the time
Dry: As 'sunny', but used on days when Max > 30 Deg C
& Relative Humidity drops below 10%
Haze: As 'sunny', but used on days when visibility drops
below 5000 m due to smoke
Mist: Visibility below 5000 m due to water droplets but above 1000 m
(also used on days when isolated fog patches)
Fog: Visibility below 1000 m
Partly Cloudy: Sun shines between 25% & 75% of the time
Cloudy: Sun shines <25% of the time
Windy: No precipitation & wind speed averages
'fresh' (18 kts) or stronger
Dust: Visibility <1km due to dust raised by wind
Possible Shower: Isolated light precipitation <25% of the metropolitan area
Drizzle: Liquid precipitation that is almost continuous
& made up of fine droplets
Shower: Brief periods of liquid precipitation
Snow: Snow or sleet falls (includes cases of flurries and/or ice)
Rain: Liquid precipitation that is almost continuous
but droplets are of medium size or large (not fine)
Thunder: Thunder heard or lightning seen
Cyclone: Wind speed averages 'storm force' (60 kts) or stronger


Weather Pattern for Tue-2-6-2026:
Active front crossing South Australian waters.
Fresh to strong unstable northwesterly flow across Victoria.

Bay Forecast

20 to 30 knot NW winds turning W to SW.
Waves of 2 to 2.5 metres.

Melbourne Terminal Aerodrome Forecast (TAF)

TAF YMML 1212 36020G35KT 9999 SCT035 BKN100
FM21 36020G35KT 8000 RA SCT035 BKN100
FM03 26020G35KT 6000 SHRA BKN035
FM21 MOD TURB BLW 5000FT
RMK
T 10 9 9 9 Q 999 996 994 993


THREE MONTH OUTLOOK FOR JUL/AUG/SEP:

NCEP's Depiction of the Global Sea Surface Temperature Evolution

The average Indian Ocean Dipole Mode Index for the past week is -0.34 (-0.65 standard deviations), the average Southern Oscillation Index (SOI) for the past 90 days is -5.64, the average SOI for the past 30 days is =14.7, and the latest recorded bimonthly Multivariate ENSO Index (MEI) is 1.47. The expected MEI, adjusted by the Indian Ocean Dipole Mode Index and also by recent values of the SOI, for MAY/JUN is 0.41. Such a value of MEI indicates a sea surface temperature distribution that corresponds to a very weak El Niño. This suggests:

RAINFALL: There is a very slightly enhanced chance that total JUL/AUG/SEP rainfall will be below normal in the MALLEE, WIMMERA, NORTHERN COUNTRY, NORTH CENTRAL, NORTHEAST, CENTRAL and WESTERN Districts, and there is a slightly enhanced chance that total JUL/AUG/SEP rainfall will be above normal in the EAST GIPPSLAND District, but there is little indication as to whether total JUL/AUG/SEP rainfall below, near or above normal in the other Victorian District, WEST GIPPSLAND.

OVERNIGHT TEMPERATURES: There is a very slightly enhanced chance that average JUL/AUG/SEP overnight temperatures will be below normal in the WIMMERA, NORTHERN COUNTRY, NORTH CENTRAL and NORTHEAST Districts, there is a very slightly enhanced chance that overnight temperatures will be above normal in the CENTRAL District, but there is little indication as to whether overnight temperatures will be below, near or above normal in other Victorian Districts.

DAYTIME TEMPERATURES: There is a very slightly enhanced chance that average JUL/AUG/SEP daytime temperatures will be above normal in the MALLEE, WIMMERA, NORTHEAST, and WESTERN Districts, but there is little indication as to whether daytime temperatures will be below, near or above normal in other Victorian Districts.



30 DAY OUTLOOK FOR MELBOURNE:

Today's scientists talk in terms of the continent's large climate variability from season to season, and from year to year. What causes these fluctuations? They are, in part, connected with the climate phenomenon called the Southern Oscillation, a major air pressure shift between the Asian and east Pacific regions whose best-known extremes are El Niño events and La Niña events. The Pacific Ocean is a huge mass of water which controls many climate features in its region. Its equatorial expanse, far larger than the Indian or Atlantic Oceans, is critical to the development of the Southern Oscillation and the El Niño and the La Niña. The Multivariate ENSO (El Niño Southern Oscillation) Index, which combines the Sea Surface Temperature (SST) distribution across the Pacific with various features of the atmospheric circulation, is used to monitor the evolution of the El Niño and Southern Oscillation phenomena. The MEI is a bimonthly index which is calculated at the end of each month.

Another region of Sea Surface Temperature variability that impacts on Australian climate is that of the Indian Ocean. One mode of variability that appears to affect Australian rainfall, particularly the south east of the country, is the Indian Ocean Dipole (IOD). The IOD referred to here is defined by an index that is the difference between SST in the western (50°-70°E, 0°S-10°N) and eastern (90°-110°E, 10°-0°S) tropical Indian Oceans. A positive Indian Ocean Dipole Mode Index (DMI) occurs when the western basin is warmer than average and the eastern basin is cool and hence the DMI is positive. These regions were proposed in a paper by Saji et al. (1999) on the Indian Ocean Dipole that showed a modulation in Australian seasonal rainfall with DMI positive and negative years. The current Indian Ocean Dipole Mode Index (DMI) is -0.65 standard deviations.

Also impacting upon Australian climate variability is a phenomenon known as the Intra Seasonal Oscillation (ISO) (also known as the Madden-Julian Oscillation (MJO), after Madden and Julian, who first identified it in the early 1970s). They discovered that, at many locations in the tropics, surface pressure and upper atmospheric winds tend to go through a coherent cycle over periods of about 40 to 50 days. It has been found that a broad area of active cloud and rainfall propagates eastwards around the equator at intervals of between about 40 and 50 days. These are not strict time limits - research over the years has pushed the limits of the oscillation's period to between about 30 and 60 days. The Madden-Julian Oscillation (MJO) is presently operating in Phase 7. This is reflected in the near-equatorial enhanced convection being found over the central Pacific. Following Phase 7, the Pacific convection often dies out, and a new region of near-equatorial enhanced convection develops over the Western Hemisphere (South America).

In Melbourne, at this time of the year, a combination of the MEI, the DMI, and the MJO Phase, such as what we have operating now, suggests, over the following 30 days:

RAINFALL: There is a 23% chance of it being wet, a 32% chance of normal rainfall, and a 45% chance of it being dry.

Wet
Weather
Dry
Weather
Normal
Weather


OVERNIGHT TEMPERATURES:
There is a 23% chance of warm nights, a 32% chance of normal overnight temperatures, and a 45% chance of cool nights.

Warm
Nights
Cool
Nights
Normal
Nights


DAYTIME TEMPERATURES: There is a 42% chance of warm days, a 33% chance of normal daytime temperatures, and a 25% chance of cool days.
Warm
Days
Cool
Days
Normal
Days


INPUT DATA

Day & DateMSLPmelMSLPhayMSLPsmiMSLPgabMSLPmtgMSLPfor700
rhmel
850
temp
min
9am
12noon
3pm
3pmdpt

gfsprecip
syn
type
offprecis
climatology
prob
TS
prob
FOG
raw
MIN
raw
MAX
raw
PoP
raw
QPF
Initial1011.91014.71008.31012.11004.41003.343.41.58.7
9.4
13.2
11.2
9
--------
Tue-2-6-2026993.7998.8990.7998.3990.71015.2906.46.337SHOWERS WIND EASING
10-17 10.3-16.4 95% 2- 10 (93% 5)
3.9%0.8%10.715.895.4%4.2
Wed-3-6-2026997.61006.6987.1997.11000.51016.7902.13.139SHOWERS
11-16 10.8-15.8 80% 1- 5 (88% 4)
1.7%0.3%10.315.591.4%2.8
Thu-4-6-2026998.71005.1994.29971004.21021.5902.17.239SHOWERS
9-14 8.8-14.4 90% 1- 10 (85% 3)
2.1%0.3%10.315.495%3.5
Fri-5-6-20261016.31017.11014.51009.81019.41026.730-0.91.941SHOWERS
8-14 7.9-15 80% 0- 6 (82% 2)
3.2%0.5%7.613.294.1%5.5
Sat-6-6-20261026.21028.21021.91023.510261028.1302.60.423SHOWER OR TWO
8-16 8.1-16.6 50% 0- 1 (46% 1)
0.9%0.6%7.315.937.2%1
Sun-7-6-20261031.31031.81027.81030.51030.11024.7302.9022PARTLY CLOUDY
8-17 8.2-17.5 20% 0- 0 (26% 0)
0.5%1.1%7.616.219.3%0.8
Mon-8-6-20261030.61030.51028.71031.81027.31015.5302.9020PARTLY CLOUDY
8-16 8.4-16.4 10% 0- 0 (28% 0
0.5%0.4%6.516.75.4%1.4
Tue-9-6-20261023.91025.41021.81027.91016.91009.963.95036Empty
8.6-15.3 47% 1.7
0.4%0.2%9.916.114.9%0.6
Wed-10-6-20261020.91023.61016.31023.71015.91015.5906.30.836Empty
8.6-15.3 47% 1.7
1.2%0.3%12.115.943%1.7
Thu-11-6-202610221023.61019.51023.81017.21015.584.97.15.720Empty
8.1-14.7 47% 1.7
1%0.9%13.117.524.8%3
Fri-12-6-20261016.71016.91015.71018.71013.61026.6905.122.719Empty
8.1-14.7 47% 1.7
6.3%0.7%12.715.580.7%4.4
Sat-13-6-20261018.31021.61017.310161023.51026.7903.913.325Empty
8.1-14.7 47% 1.7
2%5.3%11.414.687.7%2.4
Sun-14-6-20261024.21025.91021.31017.41027.81022.774.82.11.242Empty
8.1-14.7 47% 1.7
0.4%0.5%9.614.272.4%2.5
Mon-15-6-2026102510261021.61021.91026.61021.530-1.3126Empty
8.1-14.7 47% 1.7
0.3%4.4%8.513.362.8%1.1
Day 151024.91025.21023.41023.61024.91024.830-1.30oooooooooooooooooooooooo

DAYDATEWEATHER
(Melbourne)
WIND
(Melbourne Airport)
TEMPERATURES, RAINFALL, PHENOMENA
(Melbourne Olympic Park Site)
WEEK 1
Tue2-6-2026A cool night then a cool to mild day. Cloudy with rain at times.
PRECIS: RAIN
Mainly fresh wind, from a northerly direction at about 33 km/hr during the morning and continuing to be from a northerly direction, also at about 33 km/hr, during the afternoon. Gusts to around 65 km/hr.TEMPERATURES 10.7°C to 16.8°C
RAINFALL 6mm (amount) 96% (probability)
FOG 1% (probability)
THUNDER 4% (probability)
Wed3-6-2026A cool night then a cool to mild day. Cloudy with rain at times.
PRECIS: RAIN
Mainly fresh wind, from a northwesterly direction at about 30 km/hr during the morning and from a westerly direction at about 35 km/hr during the afternoon. Gusts to around 65 km/hr.TEMPERATURES 11.3°C to 16.1°C
RAINFALL 3.1mm (amount) 86% (probability)
FOG 0% (probability)
THUNDER 2% (probability)
Thu4-6-2026A chilly night then a cool day. Cloudy with rain at times.
PRECIS: RAIN
Mainly moderate to fresh wind, from a northwesterly direction at about 20 km/hr during the morning and from a westerly direction at about 25 km/hr during the afternoon. Gusts to around 55 km/hr.TEMPERATURES 9.8°C to 14.7°C
RAINFALL 5.3mm (amount) 91% (probability)
FOG 0% (probability)
THUNDER 2% (probability)
Fri5-6-2026A chilly night then a cool day. Cloudy with rain at times.
PRECIS: RAIN
Mainly moderate to fresh wind, from a west to southwesterly direction at about 20 km/hr during the morning and from a southwesterly direction at about 25 km/hr during the afternoon. Gusts to around 55 km/hr.TEMPERATURES 8.6°C to 13.8°C
RAINFALL 3.3mm (amount) 85% (probability)
FOG 0% (probability)
THUNDER 3% (probability)
Sat6-6-2026A chilly night then a cool to mild day. Cloudy. A few showers developing during the afternoon.
PRECIS: SHOWERS LATER
Mainly light to moderate wind, from a northwesterly direction at about 12 km/hr during the morning and from a westerly direction at about 15 km/hr during the afternoon. Gusts to around 40 km/hr.TEMPERATURES 8.6°C to 16.3°C
RAINFALL 0.2mm (amount) 52% (probability)
FOG 1% (probability)
THUNDER 1% (probability)
Sun7-6-2026A chilly night then a cool to mild day. A sunny morning. Cloudy at times during the afternoon, but without precipitation.
PRECIS: CLOUD INCREASING
Mainly moderate to fresh wind, from a northerly direction at about 20 km/hr during the morning and continuing to be from a northerly direction, but at about 25 km/hr, during the afternoon. Gusts to around 55 km/hr.TEMPERATURES 8.6°C to 17°C
RAINFALL 0mm (amount) 17% (probability)
FOG 1% (probability)
THUNDER 0% (probability)
Mon8-6-2026A chilly night then a cool to mild day. Sunny periods during the morning. Becoming cloudy during the afternoon, but without precipitation.
PRECIS: BECOMING CLOUDY
Mainly moderate to fresh wind, from a northerly direction at about 20 km/hr during the morning and continuing to be from a northerly direction, but at about 25 km/hr, during the afternoon. Gusts to around 55 km/hr.TEMPERATURES 8.2°C to 16.6°C
RAINFALL 0mm (amount) 20% (probability)
FOG 0% (probability)
THUNDER 1% (probability)

DAYDATEWEATHER
(Melbourne)
WIND
(Melbourne Airport)
TEMPERATURES, RAINFALL, PHENOMENA
(Melbourne Olympic Park Site)
WEEK 2
Tue9-6-2026A chilly night then a cool to mild day. Breezy and cloudy at times, but without precipitation.
PRECIS: WINDY
Mainly fresh wind, from a northerly direction at about 30 km/hr during the morning and continuing to be from a northerly direction, but at about 35 km/hr, during the afternoon. Gusts to around 75 km/hr.TEMPERATURES 9.9°C to 16.6°C
RAINFALL 0mm (amount) 24% (probability)
FOG 0% (probability)
THUNDER 0% (probability)
Wed10-6-2026A cool night then a cool to mild day. Cloudy at times with a few showers.
PRECIS: SHOWERS
Mainly fresh wind, from a northerly direction at about 30 km/hr during the morning and continuing to be from a northerly direction, but at about 35 km/hr, during the afternoon. Gusts to around 75 km/hr.TEMPERATURES 11.2°C to 16.6°C
RAINFALL 1.3mm (amount) 63% (probability)
FOG 0% (probability)
THUNDER 1% (probability)
Thu11-6-2026A cool night then a cool to mild day. Cloudy. A few showers developing during the afternoon.
PRECIS: SHOWERS LATER
Mainly moderate to fresh wind, from a northerly direction at about 20 km/hr during the morning and continuing to be from a northerly direction, but at about 25 km/hr, during the afternoon. Gusts to around 55 km/hr.TEMPERATURES 10.9°C to 17°C
RAINFALL 1.8mm (amount) 51% (probability)
FOG 1% (probability)
THUNDER 1% (probability)
Fri12-6-2026A cool night then a cool day. Cloudy. Just a few showers during the morning, increasing to rain during the afternoon.
PRECIS: RAIN
Mainly moderate to fresh wind, from a northerly direction at about 25 km/hr during the morning and continuing to be from a northerly direction, also at about 25 km/hr, during the afternoon. Gusts to around 55 km/hr.TEMPERATURES 11.2°C to 15.7°C
RAINFALL 4.9mm (amount) 70% (probability)
FOG 1% (probability)
THUNDER 6% (probability)
Sat13-6-2026A cool night then a cool day. Cloudy at times with a few showers.
PRECIS: SHOWERS
Mainly light to moderate wind, from a west to southwesterly direction at about 12 km/hr during the morning and from a south to southwesterly direction at about 15 km/hr during the afternoon. Gusts to around 35 km/hr.TEMPERATURES 10.1°C to 14.4°C
RAINFALL 2.6mm (amount) 64% (probability)
FOG 5% (probability)
THUNDER 2% (probability)
Sun14-6-2026A chilly night then a cool day. Cloudy at times during the morning with a few showers gradually clearing. A cloudy afternoon, but without precipitation.
PRECIS: SHOWERS CLEARING
Mainly light to moderate wind, from a west to southwesterly direction at about 15 km/hr during the morning and from a southwesterly direction, also at about 15 km/hr, during the afternoon. Gusts to around 40 km/hr.TEMPERATURES 9.9°C to 14.1°C
RAINFALL 2mm (amount) 70% (probability)
FOG 0% (probability)
THUNDER 0% (probability)
Mon15-6-2026A chilly night then a cool day. Cloudy during the morning with patches of drizzle gradually clearing. A cloudy afternoon, but without precipitation.
PRECIS: DRIZZLE CLEARING
Mainly light wind, from a west to southwesterly direction at about 8 km/hr during the morning and from a south to southwesterly direction at about 12 km/hr during the afternoon. Gusts to around 30 km/hr.TEMPERATURES 8.9°C to 13.7°C
RAINFALL 1.3mm (amount) 64% (probability)
FOG 4% (probability)
THUNDER 0% (probability)