Williamstown Long-term Averages

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Mean Max (°C)	27.2	27.5	24.3	20.8	16.1	13.1	12.1	12.6	15.0	18.8	22.0	24.9	19.9
Mean Min (°C)	11.1	11.2	9.7	7.0	4.9	3.8	3.4	3.5	4.2	6.2	7.7	9.5	7.0
Mean Rain (mm)	27.0	22.8	29.1	50.5	80.2	94.0	119.8	100.4	85.1	65.5	38.8	38.1	749.3
Median Rain (mm)	20.4	11.8	15.8	41.2	61.6	78.4	95.3	83.7	58.0	42.1	33.6	29.0	638.5
Mean Rain Days	6.0	4.7	6.9	9.8	13.7	15.7	18.3	18.6	14.8	11.8	8.6	8.2	137.2

Williamstown Daily Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max (°C)	42.5	42.5	40.6	35.0	26.5	22.0	23.5	25.0	29.3	33.0	39.0	40.0	42.5
Low Max (°C)	14.4	15.6	13.2	9.6	8.0	6.0	5.8	7.0	8.0	7.1	10.4	11.7	5.8
High Min (°C)	26.5	28.5	26.0	22.5	18.9	13.9	16.0	12.0	19.0	21.0	23.0	23.0	28.5
Low Min (°C)	2.0	1.0	-2.2	-3.5	-5.0	-7.0	-7.0	-4.7	-4.0	-3.5	-2.0	0.1	-7.0
High Rain (mm)	40.1	102.9	65.2	44.6	58.7	53.3	63.8	71.4	54.6	64.5	40.1	49.0	102.9

Williamstown Monthly Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Mn. Max (°C)	31.2	30.6	27.6	23.6	17.9	15.4	14.5	15.5	17.2	21.4	25.7	28.1	21.3
Low Mn. Max (°C)	24.2	24.5	20.8	17.7	13.8	10.9	10.5	10.8	12.8	16.1	18.4	22.3	18.3
High Mn. Min (°C)	15.1	13.6	13.0	9.2	8.0	7.9	5.0	5.4	5.6	7.5	9.9	11.6	8.4
Low Mn. Min (°C)	8.5	9.3	7.0	5.5	3.1	0.6	1.8	1.3	2.6	4.2	6.3	7.6	5.8
High Rain (mm)	77.2	133.2	102.3	159.7	213.9	248.4	261.5	207.2	205.5	178.7	102.2	166.2	1231.7
Low Rain (mm)	0.6	0.0	0.0	3.0	17.0	21.2	44.4	23.5	22.4	4.2	0.3	2.8	405.4

Williamstown Annual Temperatures & Rainfall

Williamstown Average Number of Days With Temperatures

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
≥ 40°C	0.6	0.3	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	1.0
≥ 35°C	4.0	3.4	1.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.3	1.7	10.3
≥ 30°C	10.0	10.4	5.5	1.2	0.0	0.0	0.0	0.0	0.0	0.5	3.1	7.1	37.4
≤ 2°C	0.1	0.1	1.0	3.8	8.2	10.4	11.4	10.1	9.2	4.9	2.2	0.8	58.0
≤ 0°C	0.0	0.0	0.1	1.0	3.6	5.8	6.8	5.9	5.1	1.2	0.6	0.0	28.5

Williamstown 'per Week' Values (14th/86th Percentiles)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max	34.3	34.4	30.5	26.6	20.0	15.6	15.0	16.7	20.0	25.0	28.6	32.1	28.6
Low Max	20.6	21.0	18.5	15.5	12.7	10.5	10.0	10.0	11.2	13.5	15.8	18.3	12.1
High Min	15.6	15.5	14.0	11.5	9.5	8.0	7.1	7.0	8.5	10.0	12.0	13.4	12.0
Low Min	7.0	7.2	5.0	2.2	0.3	-1.0	-1.0	-0.8	0.0	1.7	3.5	5.5	1.5

Williamstown Data Availability

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Years of Minima	28	29	29	25	16	16	18	17	16	15	26	28	28.0
Earliest Entry	1967	1967	1967	1967	1967	1967	1967	1967	1967	1967	1967	1967	1967
Latest Entry	1995	1995	1995	1995	1994	1994	1994	1994	1994	1994	1994	1994	1995
Years of Maxima	28	29	29	26	16	16	19	18	16	17	26	28	28.0
Earliest Entry	1967	1967	1967	1967	1967	1967	1967	1967	1967	1967	1967	1967	1967
Latest Entry	1995	1995	1995	1995	1994	1994	1994	1994	1994	1994	1994	1994	1995
Years of Rainfall	33	33	33	33	33	33	32	32	32	32	32	32	32.0
Earliest Entry	1964	1964	1964	1964	1964	1964	1964	1964	1964	1964	1964	1964	1964
Latest Entry	1996	1996	2005	1996	1996	1996	1996	1995	1995	1995	1995	2001	2005

climate

Station Details

MOUNT CRAWFORD FOREST HEADQUARTERS
Mount Lofty Ranges, South Australia

34.7122°S 138.9469°E 395m AMSL
Commenced 1954

Enter a postcode or town name for local weather, or text to search the site. » advanced search

Weather News

» all stories

Signs indicating Australia's cool season arrival

16:15 AEST Mere hours after our Total Lightning Network went quiet over the Australian continent, the Himawari satellite captured a clear, textbook snapshot of the arrival of Australia's cool season. A few distinguishing features should catch your eye: A band of cloud streaming over northern WA and towards the nation's interior A distinct clearing of cloud from most of the NT's Top End, and A band of cloud crossing to the south of WA Turns out, all three of these features point to one thing: winter is knocking at the door. Image: Himawari satellite imagery and mean sea level pressure (ECMWF) over Australia on the morning of Saturday, April 27th, 2024.