Extreme rain in United States, 23 August to 9 September 2023

Name: Extreme rain in United States, 23 August to 9 September 2023
Start: 2023-08-23
End: 2023-09-09
Location: United States

Extreme rain in United States, 23 August to 9 September 2023: 370 records at 344 stations, peak on 25 August 2023. Closed.

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

Key Facts

Extreme rain in United States, 23 August to 9 September 2023 set or tied 370 station records at 344 stations.
It ran from 23 August 2023 to 9 September 2023 (18 days) and its peak day was 25 August 2023.
Status: closed.
Marion set a monthly record daily precipitation of 227.6 mm (9.0 in) on 31 August 2023.
The busiest day was 25 August 2023 with 50 records.
The oldest broken record in the ranked list had stood for 129 years.

Footprint

23 August to 9 September 2023

The area covered by Extreme rain in United States, 23 August to 9 September 2023 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Extreme rain in United States, 23 August to 9 September 2023: stations that set records in the event
Station	Type	Value	Date
Marion	Record daily precipitation	227.6 mm (9.0 in)	2023-08-31
Ann Arbor U of Mich	Record daily precipitation	72.9 mm (2.9 in)	2023-08-24
Woolwine 1 SE	Record daily precipitation	269.7 mm (10.6 in)	2023-08-28
Norwalk Wwtp	Record daily precipitation	101.6 mm (4.0 in)	2023-08-24
Detroit Willow Run AP	Record daily precipitation	147.6 mm (5.8 in)	2023-08-24
Cleveland	Record daily precipitation	69.9 mm (2.8 in)	2023-08-23
Cave Run Lake	Record daily precipitation	66.0 mm (2.6 in)	2023-08-26
Mt Vernon	Record daily precipitation	147.3 mm (5.8 in)	2023-08-31
Manning	Record daily precipitation	184.9 mm (7.3 in)	2023-08-31
Bucyrus	Record daily precipitation	75.2 mm (3.0 in)	2023-08-24
Kenton	Record daily precipitation	66.3 mm (2.6 in)	2023-08-24
Florence Rgnl AP	Record daily precipitation	98.3 mm (3.9 in)	2023-08-30
Orangeburg 2	Record daily precipitation	107.2 mm (4.2 in)	2023-08-30
Glennville 3NW	Record daily precipitation	115.6 mm (4.6 in)	2023-08-31
Mathews	Record daily precipitation	105.9 mm (4.2 in)	2023-09-01
Meridian Naas	Record daily precipitation	105.4 mm (4.1 in)	2023-09-02
Fremont	Record daily precipitation	82.0 mm (3.2 in)	2023-08-24
Alma Bacon Co AP	Record daily precipitation	147.6 mm (5.8 in)	2023-08-30
Valdosta Rgnl AP	Record daily precipitation	178.8 mm (7.0 in)	2023-08-30
Paris	Record daily precipitation	67.3 mm (2.6 in)	2023-08-26

Records per Day

Peak day 50

Records set or tied each day from 23 August 2023 to 9 September 2023. The most in one day was 50 on 25 August 2023.

Records per day during Extreme rain in United States, 23 August to 9 September 2023
Date	Records
2023-08-23	7
2023-08-24	46
2023-08-25	50
2023-08-26	20
2023-08-27	28
2023-08-28	41
2023-08-29	47
2023-08-30	46
2023-08-31	33
2023-09-01	6
2023-09-02	10
2023-09-03	3
2023-09-04	2
2023-09-05	9
2023-09-06	9
2023-09-07	9
2023-09-08	3
2023-09-09	1

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 23 August to 9 September 2023 ranked by margin
Mt Vernon, 08-31	97.8 mm (3.9 in)
Orangeburg 2, 08-30	86.9 mm (3.4 in)
Mathews, 09-01	82.0 mm (3.2 in)
Meridian Naas, 09-02	76.7 mm (3.0 in)
Woolwine 1 SE, 08-28	74.1 mm (2.9 in)
Valdosta Rgnl AP, 08-30	73.4 mm (2.9 in)
Florence Rgnl AP, 08-30	65.5 mm (2.6 in)
Marion, 08-31	62.5 mm (2.5 in)
Norwalk Wwtp, 08-24	60.7 mm (2.4 in)
Detroit Willow Run AP, 08-24	58.4 mm (2.3 in)
Paris, 08-26	57.6 mm (2.3 in)
Cleveland, 08-23	53.6 mm (2.1 in)
Manning, 08-31	53.1 mm (2.1 in)
Cave Run Lake, 08-26	44.4 mm (1.7 in)
Ann Arbor U of Mich, 08-24	44.2 mm (1.7 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

370 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 United States, 23 August to 9 September 2023
Margin (mm)	Years the old record stood
63	95
44	120
74	38
61	78
58	22
98	73
44	112
54	80
53	74
33	116
28	112
66	58
82	61
37	109
87	36
77	52
11	107
30	74
73	4
58	44
3	86
28	116
42	60
28	100
29	106
21	108
25	104
33	82
69	18
27	64
25	66
85	20
20	112
70	42
151	20
22	116
53	26
22	85
41	32
41	72
16	108
25	64
31	64
70	13
13	112
72	16
10	112
81	14
44	52
51	8
15	96
29	68
21	64
29	64
12	100
49	58
15	112
52	28
55	13
25	72
41	41
11	124
9	129
33	70
21	64
46	24
9	100
39	48
8	129
5	113
21	64
17	73
57	21
46	26
28	48
24	64
5	104
31	45
14	59
36	13
21	65
34	50
32	49
3	100
2	122
4	104
48	28
1	108
2	108
13	80
20	64
25	44
26	33
16	64
15	68
53	2
26	21
23	73
32	41
19	73
33	40
37	32
23	58
5	82
26	3
1	93
24	30
29	36
12	72
16	60
25	54
10	70
37	4
14	44
2	85
19	52
10	64
19	48
15	64
28	22
2	82
11	64
39	14
29	20
23	36
12	64
27	6
5	80
17	46
5	73
1	80
36	20
28	45
10	69
1	84
5	76
9	61
38	2
23	13
17	32
7	64
6	64
7	60
17	40
25	24
4	70
38	12
30	16
1	74
4	64
26	17
36	1
30	10
15	36
14	40
14	40
21	37
25	12
7	70
20	24
1	51
32	21
34	6
21	30
3	68
11	48
34	16
7	64
23	32
23	18
10	48
5	64
3	64
25	12
20	22
6	52
4	64
42	13
31	10
9	57
5	60
38	12
22	16
18	12
25	2
14	44
3	64
15	20
29	10
24	4
9	49
18	12
2	64
15	36
7	46
3	48
18	34
21	12
27	8
15	17

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 23 August to 9 September 2023 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 United States, 23 August to 9 September 2023 (this event)	370 records

Every Record Set

20 of 370

Every record set or tied during Extreme rain in United States, 23 August to 9 September 2023, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2023-08-23	Cleveland	Record daily precipitation	69.9 mm (2.8 in)	53.6 mm (2.1 in)	80	72 of 100 (Major)
2023-08-24	Ann Arbor U of Mich	Record daily precipitation	72.9 mm (2.9 in)	44.2 mm (1.7 in)	120	79 of 100 (Major)
2023-08-24	Norwalk Wwtp	Record daily precipitation	101.6 mm (4.0 in)	60.7 mm (2.4 in)	78	73 of 100 (Major)
2023-08-24	Detroit Willow Run AP	Record daily precipitation	147.6 mm (5.8 in)	58.4 mm (2.3 in)	22	73 of 100 (Major)
2023-08-24	Bucyrus	Record daily precipitation	75.2 mm (3.0 in)	33.3 mm (1.3 in)	116	64 of 100 (Major)
2023-08-24	Kenton	Record daily precipitation	66.3 mm (2.6 in)	27.9 mm (1.1 in)	112	64 of 100 (Major)
2023-08-24	Fremont	Record daily precipitation	82.0 mm (3.2 in)	10.9 mm (0.4 in)	107	59 of 100 (Notable)
2023-08-26	Cave Run Lake	Record daily precipitation	66.0 mm (2.6 in)	44.4 mm (1.7 in)	112	72 of 100 (Major)
2023-08-26	Paris	Record daily precipitation	67.3 mm (2.6 in)	57.6 mm (2.3 in)	44	57 of 100 (Notable)
2023-08-28	Woolwine 1 SE	Record daily precipitation	269.7 mm (10.6 in)	74.1 mm (2.9 in)	38	78 of 100 (Major)
2023-08-30	Florence Rgnl AP	Record daily precipitation	98.3 mm (3.9 in)	65.5 mm (2.6 in)	58	64 of 100 (Major)
2023-08-30	Orangeburg 2	Record daily precipitation	107.2 mm (4.2 in)	86.9 mm (3.4 in)	36	61 of 100 (Major)
2023-08-30	Alma Bacon Co AP	Record daily precipitation	147.6 mm (5.8 in)	30.3 mm (1.2 in)	74	59 of 100 (Notable)
2023-08-30	Valdosta Rgnl AP	Record daily precipitation	178.8 mm (7.0 in)	73.4 mm (2.9 in)	4	58 of 100 (Notable)
2023-08-31	Marion	Record daily precipitation	227.6 mm (9.0 in)	62.5 mm (2.5 in)	95	81 of 100 (Exceptional)
2023-08-31	Mt Vernon	Record daily precipitation	147.3 mm (5.8 in)	97.8 mm (3.9 in)	73	72 of 100 (Major)
2023-08-31	Manning	Record daily precipitation	184.9 mm (7.3 in)	53.1 mm (2.1 in)	74	71 of 100 (Major)
2023-08-31	Glennville 3NW	Record daily precipitation	115.6 mm (4.6 in)	37.1 mm (1.5 in)	109	61 of 100 (Major)
2023-09-01	Mathews	Record daily precipitation	105.9 mm (4.2 in)	82.0 mm (3.2 in)	61	61 of 100 (Major)
2023-09-02	Meridian Naas	Record daily precipitation	105.4 mm (4.1 in)	76.7 mm (3.0 in)	52	61 of 100 (Major)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 370 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
63	95
44	120
74	38
61	78
58	22
98	73
44	112
54	80
53	74
33	116
28	112
66	58
82	61
37	109
87	36
77	52
11	107
30	74
73	4
58	44
3	86
28	116
42	60
28	100
29	106
21	108
25	104
33	82
69	18
27	64
25	66
85	20
20	112
70	42
151	20
22	116
53	26
22	85
41	32
41	72
16	108
25	64
31	64
70	13
13	112
72	16
10	112
81	14
44	52
51	8
15	96
29	68
21	64
29	64
12	100
49	58
15	112
52	28
55	13
25	72
41	41
11	124
9	129
33	70
21	64
46	24
9	100
39	48
8	129
5	113
21	64
17	73
57	21
46	26
28	48
24	64
5	104
31	45
14	59
36	13
21	65
34	50
32	49
3	100
2	122
4	104
48	28
1	108
2	108
13	80
20	64
25	44
26	33
16	64
15	68
53	2
26	21
23	73
32	41
19	73
33	40
37	32
23	58
5	82
26	3
1	93
24	30
29	36
12	72
16	60
25	54
10	70
37	4
14	44
2	85
19	52
10	64
19	48
15	64
28	22
2	82
11	64
39	14
29	20
23	36
12	64
27	6
5	80
17	46
5	73
1	80
36	20
28	45
10	69
1	84
5	76
9	61
38	2
23	13
17	32
7	64
6	64
7	60
17	40
25	24
4	70
38	12
30	16
1	74
4	64
26	17
36	1
30	10
15	36
14	40
14	40
21	37
25	12
7	70
20	24
1	51
32	21
34	6
21	30
3	68
11	48
34	16
7	64
23	32
23	18
10	48
5	64
3	64
25	12
20	22
6	52
4	64
42	13
31	10
9	57
5	60
38	12
22	16
18	12
25	2
14	44
3	64
15	20
29	10
24	4
9	49
18	12
2	64
15	36
7	46
3	48
18	34
21	12
27	8
15	17

Margin (mm)	Years the old record stood
63	95
44	120
74	38
61	78
58	22
98	73
44	112
54	80
53	74
33	116
28	112
66	58
82	61
37	109
87	36
77	52
11	107
30	74
73	4
58	44
3	86
28	116
42	60
28	100
29	106
21	108
25	104
33	82
69	18
27	64
25	66
85	20
20	112
70	42
151	20
22	116
53	26
22	85
41	32
41	72
16	108
25	64
31	64
70	13
13	112
72	16
10	112
81	14
44	52
51	8
15	96
29	68
21	64
29	64
12	100
49	58
15	112
52	28
55	13
25	72
41	41
11	124
9	129
33	70
21	64
46	24
9	100
39	48
8	129
5	113
21	64
17	73
57	21
46	26
28	48
24	64
5	104
31	45
14	59
36	13
21	65
34	50
32	49
3	100
2	122
4	104
48	28
1	108
2	108
13	80
20	64
25	44
26	33
16	64
15	68
53	2
26	21
23	73
32	41
19	73
33	40
37	32
23	58
5	82
26	3
1	93
24	30
29	36
12	72
16	60
25	54
10	70
37	4
14	44
2	85
19	52
10	64
19	48
15	64
28	22
2	82
11	64
39	14
29	20
23	36
12	64
27	6
5	80
17	46
5	73
1	80
36	20
28	45
10	69
1	84
5	76
9	61
38	2
23	13
17	32
7	64
6	64
7	60
17	40
25	24
4	70
38	12
30	16
1	74
4	64
26	17
36	1
30	10
15	36
14	40
14	40
21	37
25	12
7	70
20	24
1	51
32	21
34	6
21	30
3	68
11	48
34	16
7	64
23	32
23	18
10	48
5	64
3	64
25	12
20	22
6	52
4	64
42	13
31	10
9	57
5	60
38	12
22	16
18	12
25	2
14	44
3	64
15	20
29	10
24	4
9	49
18	12
2	64
15	36
7	46
3	48
18	34
21	12
27	8
15	17

Margin (mm)	Years the old record stood
63	95
44	120
74	38
61	78
58	22
98	73
44	112
54	80
53	74
33	116
28	112
66	58
82	61
37	109
87	36
77	52
11	107
30	74
73	4
58	44
3	86
28	116
42	60
28	100
29	106
21	108
25	104
33	82
69	18
27	64
25	66
85	20
20	112
70	42
151	20
22	116
53	26
22	85
41	32
41	72
16	108
25	64
31	64
70	13
13	112
72	16
10	112
81	14
44	52
51	8
15	96
29	68
21	64
29	64
12	100
49	58
15	112
52	28
55	13
25	72
41	41
11	124
9	129
33	70
21	64
46	24
9	100
39	48
8	129
5	113
21	64
17	73
57	21
46	26
28	48
24	64
5	104
31	45
14	59
36	13
21	65
34	50
32	49
3	100
2	122
4	104
48	28
1	108
2	108
13	80
20	64
25	44
26	33
16	64
15	68
53	2
26	21
23	73
32	41
19	73
33	40
37	32
23	58
5	82
26	3
1	93
24	30
29	36
12	72
16	60
25	54
10	70
37	4
14	44
2	85
19	52
10	64
19	48
15	64
28	22
2	82
11	64
39	14
29	20
23	36
12	64
27	6
5	80
17	46
5	73
1	80
36	20
28	45
10	69
1	84
5	76
9	61
38	2
23	13
17	32
7	64
6	64
7	60
17	40
25	24
4	70
38	12
30	16
1	74
4	64
26	17
36	1
30	10
15	36
14	40
14	40
21	37
25	12
7	70
20	24
1	51
32	21
34	6
21	30
3	68
11	48
34	16
7	64
23	32
23	18
10	48
5	64
3	64
25	12
20	22
6	52
4	64
42	13
31	10
9	57
5	60
38	12
22	16
18	12
25	2
14	44
3	64
15	20
29	10
24	4
9	49
18	12
2	64
15	36
7	46
3	48
18	34
21	12
27	8
15	17