Extreme rain in Australia, 6 to 8 September 2020

Name: Extreme rain in Australia, 6 to 8 September 2020
Start: 2020-09-06
End: 2020-09-08
Location: Australia

Extreme rain in Australia, 6 to 8 September 2020: 114 records at 114 stations, peak on 7 September 2020. Closed.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Key Facts

Extreme rain in Australia, 6 to 8 September 2020 set or tied 114 station records at 114 stations.
It ran from 6 September 2020 to 8 September 2020 (3 days) and its peak day was 7 September 2020.
Status: closed.
Wagin set a daily record precipitation of 28.8 mm (1.1 in) on 7 September 2020.
The busiest day was 7 September 2020 with 109 records.
The oldest broken record in the ranked list had stood for 111 years.

Footprint

6 to 8 September 2020

The area covered by Extreme rain in Australia, 6 to 8 September 2020 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Extreme rain in Australia, 6 to 8 September 2020: stations that set records in the event
Station	Type	Value	Date
Wagin	Record daily precipitation	28.8 mm (1.1 in)	2020-09-07
Bannister	Record daily precipitation	38.4 mm (1.5 in)	2020-09-07
Cranbrook	Record daily precipitation	28.0 mm (1.1 in)	2020-09-07
Kojonup	Record daily precipitation	26.0 mm (1.0 in)	2020-09-07
Lilydale	Record daily precipitation	33.1 mm (1.3 in)	2020-09-07
Wilgarrup	Record daily precipitation	46.5 mm (1.8 in)	2020-09-07
Congee	Record daily precipitation	27.0 mm (1.1 in)	2020-09-07
Cranham	Record daily precipitation	26.0 mm (1.0 in)	2020-09-07
Boddington Shire	Record daily precipitation	36.2 mm (1.4 in)	2020-09-08
Marradong	Record daily precipitation	33.0 mm (1.3 in)	2020-09-07
Chamingup	Record daily precipitation	29.6 mm (1.2 in)	2020-09-07
Tarwonga	Record daily precipitation	35.6 mm (1.4 in)	2020-09-07
Oak Park	Record daily precipitation	20.0 mm (0.8 in)	2020-09-07
Benalla	Record daily precipitation	24.6 mm (1.0 in)	2020-09-07
Badgebup	Record daily precipitation	23.8 mm (0.9 in)	2020-09-07
Bunkin	Record daily precipitation	22.0 mm (0.9 in)	2020-09-07
Narrogin	Record daily precipitation	23.6 mm (0.9 in)	2020-09-07
Riverdale	Record daily precipitation	20.2 mm (0.8 in)	2020-09-07
The Oaks	Record daily precipitation	24.6 mm (1.0 in)	2020-09-07
Avoca	Record daily precipitation	22.0 mm (0.9 in)	2020-09-07

Records per Day

Peak day 109

Records set or tied each day from 6 September 2020 to 8 September 2020. The most in one day was 109 on 7 September 2020.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in Australia, 6 to 8 September 2020 ranked by margin
Bannister, 09-07	25.2 mm (1.0 in)
Wilgarrup, 09-07	24.1 mm (0.9 in)
Lilydale, 09-07	19.1 mm (0.8 in)
Wagin, 09-07	18.9 mm (0.7 in)
Congee, 09-07	18.0 mm (0.7 in)
Cranham, 09-07	17.8 mm (0.7 in)
Chamingup, 09-07	16.6 mm (0.7 in)
Cranbrook, 09-07	15.6 mm (0.6 in)
Badgebup, 09-07	14.0 mm (0.6 in)
Kojonup, 09-07	13.3 mm (0.5 in)
Marradong, 09-07	13.2 mm (0.5 in)
Avoca, 09-07	12.3 mm (0.5 in)
Narrogin, 09-07	12.2 mm (0.5 in)
Benalla, 09-07	11.4 mm (0.4 in)
Bunkin, 09-07	10.6 mm (0.4 in)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

114 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.

Margin against age of the broken record in Extreme rain in Australia, 6 to 8 September 2020
Margin (mm)	Years the old record stood
19	95
25	90
16	100
13	108
11	100
12	95
11	100
11	96
19	55
10	99
24	37
10	111
18	37
18	43
11	97
13	78
17	37
14	43
9	51
12	50
22	29
15	37
26	50
24	50
26	27
20	25
0	91
15	25
15	37
13	78
23	6
12	37
24	50
10	37
9	50
13	25
19	50
5	87
10	53
34	7
7	78
1	103
21	4
17	47
14	37
5	76
10	37
16	47
2	80
8	37
4	78
8	37
9	31
10	50
8	37
14	37
15	37
9	54
14	37
14	37
6	50
17	15
16	37
1	70
1	70
1	70
3	50
8	25
6	50
7	25
7	25
11	25
3	50
6	25
8	8
0	72
6	37
2	50
11	27
8	37
3	39
9	26
3	18
3	37
10	16
2	43
4	50
4	28
10	19
6	7
4	37
2	2
9	19
2	47
1	50
2	50
6	27
1	37
1	49
3	47
1	37
2	28
2	27
0	20
1	34
1	25
2	37
1	23
1	37
1	25
2	19
2	19
0	20
1	19

Compared With Other Events

Station records per event

Station records in Extreme rain in Australia, 6 to 8 September 2020 compared with similar events
Extreme rain in United States and Mexico, 23 February to 15 March 2019	2,223 records
Extreme rain in United States, 3 to 19 January 2024	2,133 records
Extreme rain in Australia, 7 to 26 March 2021	2,099 records
Extreme rain in United States and Mexico, 29 September to 19 October 2018	1,970 records
Extreme rain in United States, 19 December 2022 to 13 January 2023	1,941 records
Extreme rain in Australia, 6 to 8 September 2020 (this event)	114 records

Every Record Set

20 of 114

Every record set or tied during Extreme rain in Australia, 6 to 8 September 2020, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2020-09-07	Wagin	Record daily precipitation	28.8 mm (1.1 in)	18.9 mm (0.7 in)	95	78 of 100 (Major)
2020-09-07	Bannister	Record daily precipitation	38.4 mm (1.5 in)	25.2 mm (1.0 in)	90	77 of 100 (Major)
2020-09-07	Cranbrook	Record daily precipitation	28.0 mm (1.1 in)	15.6 mm (0.6 in)	100	73 of 100 (Major)
2020-09-07	Kojonup	Record daily precipitation	26.0 mm (1.0 in)	13.3 mm (0.5 in)	108	69 of 100 (Major)
2020-09-07	Lilydale	Record daily precipitation	33.1 mm (1.3 in)	19.1 mm (0.8 in)	55	60 of 100 (Major)
2020-09-07	Wilgarrup	Record daily precipitation	46.5 mm (1.8 in)	24.1 mm (0.9 in)	37	58 of 100 (Notable)
2020-09-07	Congee	Record daily precipitation	27.0 mm (1.1 in)	18.0 mm (0.7 in)	37	57 of 100 (Notable)
2020-09-07	Cranham	Record daily precipitation	26.0 mm (1.0 in)	17.8 mm (0.7 in)	43	56 of 100 (Notable)
2020-09-07	Marradong	Record daily precipitation	33.0 mm (1.3 in)	13.2 mm (0.5 in)	78	54 of 100 (Notable)
2020-09-07	Chamingup	Record daily precipitation	29.6 mm (1.2 in)	16.6 mm (0.7 in)	37	53 of 100 (Notable)
2020-09-07	Tarwonga	Record daily precipitation	35.6 mm (1.4 in)	9.4 mm (0.37 in)	51	52 of 100 (Notable)
2020-09-07	Oak Park	Record daily precipitation	20.0 mm (0.8 in)	9.8 mm (0.39 in)	99	20 of 100 (Routine)
2020-09-07	Benalla	Record daily precipitation	24.6 mm (1.0 in)	11.4 mm (0.4 in)	100	20 of 100 (Routine)
2020-09-07	Badgebup	Record daily precipitation	23.8 mm (0.9 in)	14.0 mm (0.6 in)	43	20 of 100 (Routine)
2020-09-07	Bunkin	Record daily precipitation	22.0 mm (0.9 in)	10.6 mm (0.4 in)	96	20 of 100 (Routine)
2020-09-07	Narrogin	Record daily precipitation	23.6 mm (0.9 in)	12.2 mm (0.5 in)	95	20 of 100 (Routine)
2020-09-07	Riverdale	Record daily precipitation	20.2 mm (0.8 in)	9.5 mm (0.37 in)	111	20 of 100 (Routine)
2020-09-07	The Oaks	Record daily precipitation	24.6 mm (1.0 in)	10.6 mm (0.4 in)	100	20 of 100 (Routine)
2020-09-07	Avoca	Record daily precipitation	22.0 mm (0.9 in)	12.3 mm (0.5 in)	50	20 of 100 (Routine)
2020-09-08	Boddington Shire	Record daily precipitation	36.2 mm (1.4 in)	10.5 mm (0.4 in)	97	55 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 114 records the event counts. The counts above use the full total.

Related Headlines

Third party news, headline and link only

Download the Data

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.

Margin (mm)	Years the old record stood
19	95
25	90
16	100
13	108
11	100
12	95
11	100
11	96
19	55
10	99
24	37
10	111
18	37
18	43
11	97
13	78
17	37
14	43
9	51
12	50
22	29
15	37
26	50
24	50
26	27
20	25
0	91
15	25
15	37
13	78
23	6
12	37
24	50
10	37
9	50
13	25
19	50
5	87
10	53
34	7
7	78
1	103
21	4
17	47
14	37
5	76
10	37
16	47
2	80
8	37
4	78
8	37
9	31
10	50
8	37
14	37
15	37
9	54
14	37
14	37
6	50
17	15
16	37
1	70
1	70
1	70
3	50
8	25
6	50
7	25
7	25
11	25
3	50
6	25
8	8
0	72
6	37
2	50
11	27
8	37
3	39
9	26
3	18
3	37
10	16
2	43
4	50
4	28
10	19
6	7
4	37
2	2
9	19
2	47
1	50
2	50
6	27
1	37
1	49
3	47
1	37
2	28
2	27
0	20
1	34
1	25
2	37
1	23
1	37
1	25
2	19
2	19
0	20
1	19

Margin (mm)	Years the old record stood
19	95
25	90
16	100
13	108
11	100
12	95
11	100
11	96
19	55
10	99
24	37
10	111
18	37
18	43
11	97
13	78
17	37
14	43
9	51
12	50
22	29
15	37
26	50
24	50
26	27
20	25
0	91
15	25
15	37
13	78
23	6
12	37
24	50
10	37
9	50
13	25
19	50
5	87
10	53
34	7
7	78
1	103
21	4
17	47
14	37
5	76
10	37
16	47
2	80
8	37
4	78
8	37
9	31
10	50
8	37
14	37
15	37
9	54
14	37
14	37
6	50
17	15
16	37
1	70
1	70
1	70
3	50
8	25
6	50
7	25
7	25
11	25
3	50
6	25
8	8
0	72
6	37
2	50
11	27
8	37
3	39
9	26
3	18
3	37
10	16
2	43
4	50
4	28
10	19
6	7
4	37
2	2
9	19
2	47
1	50
2	50
6	27
1	37
1	49
3	47
1	37
2	28
2	27
0	20
1	34
1	25
2	37
1	23
1	37
1	25
2	19
2	19
0	20
1	19

Margin (mm)	Years the old record stood
19	95
25	90
16	100
13	108
11	100
12	95
11	100
11	96
19	55
10	99
24	37
10	111
18	37
18	43
11	97
13	78
17	37
14	43
9	51
12	50
22	29
15	37
26	50
24	50
26	27
20	25
0	91
15	25
15	37
13	78
23	6
12	37
24	50
10	37
9	50
13	25
19	50
5	87
10	53
34	7
7	78
1	103
21	4
17	47
14	37
5	76
10	37
16	47
2	80
8	37
4	78
8	37
9	31
10	50
8	37
14	37
15	37
9	54
14	37
14	37
6	50
17	15
16	37
1	70
1	70
1	70
3	50
8	25
6	50
7	25
7	25
11	25
3	50
6	25
8	8
0	72
6	37
2	50
11	27
8	37
3	39
9	26
3	18
3	37
10	16
2	43
4	50
4	28
10	19
6	7
4	37
2	2
9	19
2	47
1	50
2	50
6	27
1	37
1	49
3	47
1	37
2	28
2	27
0	20
1	34
1	25
2	37
1	23
1	37
1	25
2	19
2	19
0	20
1	19