Extreme rain in United States, 1 to 5 May 2018

Name: Extreme rain in United States, 1 to 5 May 2018
Start: 2018-05-01
End: 2018-05-05
Location: United States

Extreme rain in United States, 1 to 5 May 2018: 311 records at 271 stations, peak on 4 May 2018. Closed.

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

Key Facts

Extreme rain in United States, 1 to 5 May 2018 set or tied 311 station records at 271 stations.
It ran from 1 May 2018 to 5 May 2018 (5 days) and its peak day was 4 May 2018.
Status: closed.
Three Rivers set a daily record precipitation of 83.8 mm (3.3 in) on 3 May 2018.
The busiest day was 4 May 2018 with 118 records.
The oldest broken record in the ranked list had stood for 123 years.

Footprint

1 to 5 May 2018

The area covered by Extreme rain in United States, 1 to 5 May 2018 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, 1 to 5 May 2018: stations that set records in the event
Station	Type	Value	Date
Three Rivers	Record daily precipitation	83.8 mm (3.3 in)	2018-05-03
New Hampton	Record daily precipitation	81.3 mm (3.2 in)	2018-05-04
Osage	Record daily precipitation	76.2 mm (3.0 in)	2018-05-04
Fond du Lac Wwtp	Record daily precipitation	69.9 mm (2.8 in)	2018-05-04
Hillsdale	Record daily precipitation	52.8 mm (2.1 in)	2018-05-03
Bowling Green Wwtp	Record daily precipitation	45.2 mm (1.8 in)	2018-05-03
Cresco 1 NE	Record daily precipitation	59.2 mm (2.3 in)	2018-05-04
Dowagiac 1 W	Record daily precipitation	92.7 mm (3.6 in)	2018-05-03
Angola	Record daily precipitation	55.9 mm (2.2 in)	2018-05-03
Knox Wwtp	Record daily precipitation	41.4 mm (1.6 in)	2018-05-03
Decorah	Record daily precipitation	95.3 mm (3.8 in)	2018-05-04
Charlevoix	Record daily precipitation	50.3 mm (2.0 in)	2018-05-04
Goshen 3SW	Record daily precipitation	62.0 mm (2.4 in)	2018-05-03
Chilton	Record daily precipitation	87.1 mm (3.4 in)	2018-05-04
Oshkosh	Record daily precipitation	71.1 mm (2.8 in)	2018-05-04
Portage Wwtp	Record daily precipitation	64.0 mm (2.5 in)	2018-05-04
Rio Grande City	Record daily precipitation	108.7 mm (4.3 in)	2018-05-05
Beaver Dam Wwtp	Record daily precipitation	45.7 mm (1.8 in)	2018-05-04
Viroqua	Record daily precipitation	65.8 mm (2.6 in)	2018-05-04
Sabinal	Record daily precipitation	54.6 mm (2.1 in)	2018-05-05

Records per Day

Peak day 118

Records set or tied each day from 1 May 2018 to 5 May 2018. The most in one day was 118 on 4 May 2018.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 1 to 5 May 2018 ranked by margin
Chilton, 05-04	60.2 mm (2.4 in)
Fond du Lac Wwtp, 05-04	53.6 mm (2.1 in)
Three Rivers, 05-03	50.8 mm (2.0 in)
New Hampton, 05-04	45.2 mm (1.8 in)
Rio Grande City, 05-05	45.2 mm (1.8 in)
Oshkosh, 05-04	43.7 mm (1.7 in)
Portage Wwtp, 05-04	43.4 mm (1.7 in)
Osage, 05-04	41.9 mm (1.6 in)
Goshen 3SW, 05-03	36.3 mm (1.4 in)
Sabinal, 05-05	30.2 mm (1.2 in)
Charlevoix, 05-04	30.0 mm (1.2 in)
Dowagiac 1 W, 05-03	28.7 mm (1.1 in)
Hillsdale, 05-03	27.9 mm (1.1 in)
Cresco 1 NE, 05-04	26.7 mm (1.1 in)
Angola, 05-03	25.4 mm (1.0 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

311 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, 1 to 5 May 2018
Margin (mm)	Years the old record stood
51	120
45	116
42	104
54	72
28	118
27	122
24	101
29	59
25	88
23	103
10	115
30	43
36	31
45	76
60	16
44	16
43	16
30	99
25	68
16	104
33	16
28	72
22	104
22	72
33	44
30	83
32	39
15	104
33	20
53	3
13	123
10	118
17	83
20	100
44	15
42	16
41	3
37	24
11	122
11	99
16	83
16	72
18	104
38	16
18	72
47	9
10	99
16	119
32	16
8	104
19	72
16	80
14	71
7	99
34	24
30	16
19	52
17	59
36	4
25	61
27	40
6	103
29	5
9	100
11	80
31	39
12	72
11	80
41	44
3	105
19	69
2	119
3	104
30	39
2	103
1	104
13	73
7	89
21	39
2	96
36	48
9	80
1	108
1	120
13	28
33	4
1	123
33	5
7	88
42	9
26	39
10	69
30	5
4	84
29	16
19	44
14	53
9	80
5	73
4	80
32	16
16	40
3	80
10	64
23	60
4	84
7	72
12	53
20	60
16	40
18	36
19	69
44	24
24	15
44	16
8	72
27	28
3	83
39	11
19	36
5	73
34	16
7	61
5	72
19	33
15	39
3	71
5	59
30	52
22	48
27	24
26	16
9	64
16	33
11	44
3	69
29	4
22	39
18	24
37	0
40	27
21	10
3	64
29	5
17	39
29	5
28	16
13	35
18	24
44	4
17	40
25	3
36	28
36	27
12	52
25	39
13	24
14	40
18	44
10	6
9	44
9	60
27	31
15	33
2	67
29	0
30	4
7	52
10	27
15	16
16	28
13	28
23	0
2	52
31	11
16	24
4	61
9	39
18	35
4	60
5	56
19	16
23	4
17	19
27	4
11	43
3	40
16	3
6	44
1	60
1	60
20	20
6	36
20	16
1	44
25	12
11	20
5	39
19	21
23	12

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 1 to 5 May 2018 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, 1 to 5 May 2018 (this event)	311 records

Every Record Set

20 of 311

Every record set or tied during Extreme rain in United States, 1 to 5 May 2018, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2018-05-03	Three Rivers	Record daily precipitation	83.8 mm (3.3 in)	50.8 mm (2.0 in)	120	80 of 100 (Exceptional)
2018-05-03	Hillsdale	Record daily precipitation	52.8 mm (2.1 in)	27.9 mm (1.1 in)	118	67 of 100 (Major)
2018-05-03	Bowling Green Wwtp	Record daily precipitation	45.2 mm (1.8 in)	23.6 mm (0.9 in)	101	65 of 100 (Major)
2018-05-03	Dowagiac 1 W	Record daily precipitation	92.7 mm (3.6 in)	28.7 mm (1.1 in)	59	62 of 100 (Major)
2018-05-03	Angola	Record daily precipitation	55.9 mm (2.2 in)	25.4 mm (1.0 in)	88	59 of 100 (Notable)
2018-05-03	Knox Wwtp	Record daily precipitation	41.4 mm (1.6 in)	23.4 mm (0.9 in)	103	59 of 100 (Notable)
2018-05-03	Goshen 3SW	Record daily precipitation	62.0 mm (2.4 in)	36.3 mm (1.4 in)	31	56 of 100 (Notable)
2018-05-04	New Hampton	Record daily precipitation	81.3 mm (3.2 in)	45.2 mm (1.8 in)	116	77 of 100 (Major)
2018-05-04	Osage	Record daily precipitation	76.2 mm (3.0 in)	41.9 mm (1.6 in)	104	74 of 100 (Major)
2018-05-04	Fond du Lac Wwtp	Record daily precipitation	69.9 mm (2.8 in)	53.6 mm (2.1 in)	72	71 of 100 (Major)
2018-05-04	Cresco 1 NE	Record daily precipitation	59.2 mm (2.3 in)	26.7 mm (1.1 in)	122	65 of 100 (Major)
2018-05-04	Decorah	Record daily precipitation	95.3 mm (3.8 in)	10.2 mm (0.4 in)	115	59 of 100 (Notable)
2018-05-04	Charlevoix	Record daily precipitation	50.3 mm (2.0 in)	30.0 mm (1.2 in)	43	57 of 100 (Notable)
2018-05-04	Chilton	Record daily precipitation	87.1 mm (3.4 in)	60.2 mm (2.4 in)	16	55 of 100 (Notable)
2018-05-04	Oshkosh	Record daily precipitation	71.1 mm (2.8 in)	43.7 mm (1.7 in)	16	55 of 100 (Notable)
2018-05-04	Portage Wwtp	Record daily precipitation	64.0 mm (2.5 in)	43.4 mm (1.7 in)	16	55 of 100 (Notable)
2018-05-04	Beaver Dam Wwtp	Record daily precipitation	45.7 mm (1.8 in)	25.4 mm (1.0 in)	68	54 of 100 (Notable)
2018-05-04	Viroqua	Record daily precipitation	65.8 mm (2.6 in)	16.3 mm (0.6 in)	104	54 of 100 (Notable)
2018-05-05	Rio Grande City	Record daily precipitation	108.7 mm (4.3 in)	45.2 mm (1.8 in)	76	55 of 100 (Notable)
2018-05-05	Sabinal	Record daily precipitation	54.6 mm (2.1 in)	30.2 mm (1.2 in)	99	54 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 311 records the event counts. The counts above use the full total.

Related Headlines

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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.

Date	Records
2018-05-01	2
2018-05-02	68
2018-05-03	91
2018-05-04	118
2018-05-05	32

Margin (mm)	Years the old record stood
51	120
45	116
42	104
54	72
28	118
27	122
24	101
29	59
25	88
23	103
10	115
30	43
36	31
45	76
60	16
44	16
43	16
30	99
25	68
16	104
33	16
28	72
22	104
22	72
33	44
30	83
32	39
15	104
33	20
53	3
13	123
10	118
17	83
20	100
44	15
42	16
41	3
37	24
11	122
11	99
16	83
16	72
18	104
38	16
18	72
47	9
10	99
16	119
32	16
8	104
19	72
16	80
14	71
7	99
34	24
30	16
19	52
17	59
36	4
25	61
27	40
6	103
29	5
9	100
11	80
31	39
12	72
11	80
41	44
3	105
19	69
2	119
3	104
30	39
2	103
1	104
13	73
7	89
21	39
2	96
36	48
9	80
1	108
1	120
13	28
33	4
1	123
33	5
7	88
42	9
26	39
10	69
30	5
4	84
29	16
19	44
14	53
9	80
5	73
4	80
32	16
16	40
3	80
10	64
23	60
4	84
7	72
12	53
20	60
16	40
18	36
19	69
44	24
24	15
44	16
8	72
27	28
3	83
39	11
19	36
5	73
34	16
7	61
5	72
19	33
15	39
3	71
5	59
30	52
22	48
27	24
26	16
9	64
16	33
11	44
3	69
29	4
22	39
18	24
37	0
40	27
21	10
3	64
29	5
17	39
29	5
28	16
13	35
18	24
44	4
17	40
25	3
36	28
36	27
12	52
25	39
13	24
14	40
18	44
10	6
9	44
9	60
27	31
15	33
2	67
29	0
30	4
7	52
10	27
15	16
16	28
13	28
23	0
2	52
31	11
16	24
4	61
9	39
18	35
4	60
5	56
19	16
23	4
17	19
27	4
11	43
3	40
16	3
6	44
1	60
1	60
20	20
6	36
20	16
1	44
25	12
11	20
5	39
19	21
23	12

Margin (mm)	Years the old record stood
51	120
45	116
42	104
54	72
28	118
27	122
24	101
29	59
25	88
23	103
10	115
30	43
36	31
45	76
60	16
44	16
43	16
30	99
25	68
16	104
33	16
28	72
22	104
22	72
33	44
30	83
32	39
15	104
33	20
53	3
13	123
10	118
17	83
20	100
44	15
42	16
41	3
37	24
11	122
11	99
16	83
16	72
18	104
38	16
18	72
47	9
10	99
16	119
32	16
8	104
19	72
16	80
14	71
7	99
34	24
30	16
19	52
17	59
36	4
25	61
27	40
6	103
29	5
9	100
11	80
31	39
12	72
11	80
41	44
3	105
19	69
2	119
3	104
30	39
2	103
1	104
13	73
7	89
21	39
2	96
36	48
9	80
1	108
1	120
13	28
33	4
1	123
33	5
7	88
42	9
26	39
10	69
30	5
4	84
29	16
19	44
14	53
9	80
5	73
4	80
32	16
16	40
3	80
10	64
23	60
4	84
7	72
12	53
20	60
16	40
18	36
19	69
44	24
24	15
44	16
8	72
27	28
3	83
39	11
19	36
5	73
34	16
7	61
5	72
19	33
15	39
3	71
5	59
30	52
22	48
27	24
26	16
9	64
16	33
11	44
3	69
29	4
22	39
18	24
37	0
40	27
21	10
3	64
29	5
17	39
29	5
28	16
13	35
18	24
44	4
17	40
25	3
36	28
36	27
12	52
25	39
13	24
14	40
18	44
10	6
9	44
9	60
27	31
15	33
2	67
29	0
30	4
7	52
10	27
15	16
16	28
13	28
23	0
2	52
31	11
16	24
4	61
9	39
18	35
4	60
5	56
19	16
23	4
17	19
27	4
11	43
3	40
16	3
6	44
1	60
1	60
20	20
6	36
20	16
1	44
25	12
11	20
5	39
19	21
23	12

Margin (mm)	Years the old record stood
51	120
45	116
42	104
54	72
28	118
27	122
24	101
29	59
25	88
23	103
10	115
30	43
36	31
45	76
60	16
44	16
43	16
30	99
25	68
16	104
33	16
28	72
22	104
22	72
33	44
30	83
32	39
15	104
33	20
53	3
13	123
10	118
17	83
20	100
44	15
42	16
41	3
37	24
11	122
11	99
16	83
16	72
18	104
38	16
18	72
47	9
10	99
16	119
32	16
8	104
19	72
16	80
14	71
7	99
34	24
30	16
19	52
17	59
36	4
25	61
27	40
6	103
29	5
9	100
11	80
31	39
12	72
11	80
41	44
3	105
19	69
2	119
3	104
30	39
2	103
1	104
13	73
7	89
21	39
2	96
36	48
9	80
1	108
1	120
13	28
33	4
1	123
33	5
7	88
42	9
26	39
10	69
30	5
4	84
29	16
19	44
14	53
9	80
5	73
4	80
32	16
16	40
3	80
10	64
23	60
4	84
7	72
12	53
20	60
16	40
18	36
19	69
44	24
24	15
44	16
8	72
27	28
3	83
39	11
19	36
5	73
34	16
7	61
5	72
19	33
15	39
3	71
5	59
30	52
22	48
27	24
26	16
9	64
16	33
11	44
3	69
29	4
22	39
18	24
37	0
40	27
21	10
3	64
29	5
17	39
29	5
28	16
13	35
18	24
44	4
17	40
25	3
36	28
36	27
12	52
25	39
13	24
14	40
18	44
10	6
9	44
9	60
27	31
15	33
2	67
29	0
30	4
7	52
10	27
15	16
16	28
13	28
23	0
2	52
31	11
16	24
4	61
9	39
18	35
4	60
5	56
19	16
23	4
17	19
27	4
11	43
3	40
16	3
6	44
1	60
1	60
20	20
6	36
20	16
1	44
25	12
11	20
5	39
19	21
23	12