Extreme rain in United States, 7 to 18 September 2023

Name: Extreme rain in United States, 7 to 18 September 2023
Start: 2023-09-07
End: 2023-09-18
Location: United States

Extreme rain in United States, 7 to 18 September 2023: 193 records at 181 stations, peak on 15 September 2023. Closed.

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

Key Facts

Extreme rain in United States, 7 to 18 September 2023 set or tied 193 station records at 181 stations.
It ran from 7 September 2023 to 18 September 2023 (12 days) and its peak day was 15 September 2023.
Status: closed.
Roosevelt 1 S set an all-time record daily precipitation of 120.1 mm (4.7 in) on 13 September 2023.
The busiest day was 15 September 2023 with 37 records.
The oldest broken record in the ranked list had stood for 124 years.

Footprint

7 to 18 September 2023

The area covered by Extreme rain in United States, 7 to 18 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, 7 to 18 September 2023: stations that set records in the event
Station	Type	Value	Date
Roosevelt 1 S	Record daily precipitation	120.1 mm (4.7 in)	2023-09-13
Brighton 3 SE	Record daily precipitation	41.9 mm (1.6 in)	2023-09-15
Gage AP	Record daily precipitation	55.9 mm (2.2 in)	2023-09-11
Boulder	Record daily precipitation	39.1 mm (1.5 in)	2023-09-14
Walsenburg 1 NW	Record daily precipitation	29.7 mm (1.2 in)	2023-09-11
Pueblo Rsvr	Record daily precipitation	26.7 mm (1.1 in)	2023-09-11
Florissant Fossil Beds	Record daily precipitation	27.7 mm (1.1 in)	2023-09-11
Pueblo Mem AP	Record daily precipitation	25.9 mm (1.0 in)	2023-09-11
Cliff 11 SE	Record daily precipitation	38.1 mm (1.5 in)	2023-09-13
Cortez	Record daily precipitation	27.4 mm (1.1 in)	2023-09-13
Crosho	Record daily precipitation	50.8 mm (2.0 in)	2023-09-13
Wood	Record daily precipitation	26.7 mm (1.1 in)	2023-09-09
Curtis	Record daily precipitation	38.6 mm (1.5 in)	2023-09-10
Owl Creek	Record daily precipitation	35.6 mm (1.4 in)	2023-09-10
Stephenville Clark Fld	Record daily precipitation	67.8 mm (2.7 in)	2023-09-14
Northglenn	Record daily precipitation	41.9 mm (1.6 in)	2023-09-15
Wallace	Record daily precipitation	21.6 mm (0.9 in)	2023-09-10
Breckenridge	Record daily precipitation	17.3 mm (0.7 in)	2023-09-16
Buena Vista 2S	Record daily precipitation	18.0 mm (0.7 in)	2023-09-16
Monte Vista 2W	Record daily precipitation	23.4 mm (0.9 in)	2023-09-16

Records per Day

Peak day 37

Records set or tied each day from 7 September 2023 to 18 September 2023. The most in one day was 37 on 15 September 2023.

Records per day during Extreme rain in United States, 7 to 18 September 2023
Date	Records
2023-09-07	2
2023-09-08	2
2023-09-09	7
2023-09-10	26
2023-09-11	35
2023-09-12	21
2023-09-13	18
2023-09-14	18
2023-09-15	37
2023-09-16	22
2023-09-17	4
2023-09-18	1

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 7 to 18 September 2023 ranked by margin
Gage AP, 09-11	36.8 mm (1.4 in)
Brighton 3 SE, 09-15	27.2 mm (1.1 in)
Owl Creek, 09-10	25.4 mm (1.0 in)
Florissant Fossil Beds, 09-11	23.9 mm (0.9 in)
Northglenn, 09-15	23.4 mm (0.9 in)
Pueblo Rsvr, 09-11	19.8 mm (0.8 in)
Cliff 11 SE, 09-13	19.0 mm (0.7 in)
Stephenville Clark Fld, 09-14	18.8 mm (0.7 in)
Walsenburg 1 NW, 09-11	18.3 mm (0.7 in)
Pueblo Mem AP, 09-11	16.5 mm (0.6 in)
Roosevelt 1 S, 09-13	14.9 mm (0.6 in)
Boulder, 09-14	14.2 mm (0.6 in)
Monte Vista 2W, 09-16	13.5 mm (0.5 in)
Crosho, 09-13	12.7 mm (0.5 in)
Cortez, 09-13	8.9 mm (0.35 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

193 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, 7 to 18 September 2023
Margin (mm)	Years the old record stood
15	45
27	36
14	60
37	33
14	120
18	40
20	16
24	16
19	64
17	37
9	81
3	116
9	124
13	25
6	110
5	101
25	20
2	118
23	12
19	76
16	64
16	65
28	56
2	120
8	76
13	86
19	34
7	72
1	104
8	68
0	120
7	72
11	52
5	50
36	24
6	58
12	56
23	33
10	24
43	0
23	36
6	64
16	20
11	36
5	64
21	12
7	76
17	64
38	26
10	34
13	13
15	10
11	73
5	72
2	68
23	32
11	33
15	29
18	46
22	28
1	73
35	9
8	26
6	44
1	64
3	56
22	36
10	20
1	68
4	46
9	33
10	37
4	42
4	48
10	56
8	42
20	8
6	13
8	33
6	56
3	49
8	25
15	29
3	60
9	28
2	56
5	48
2	46
2	61
8	42
2	48
11	42
9	40
6	13
8	32
3	53
11	16
16	14
13	28
3	34
9	12
6	20
10	34
3	44
5	40
13	4
12	20
6	32
5	26
9	29
3	36
1	33
12	28
13	24
3	40
11	29
5	24
9	9
5	34
15	26
5	24
8	28
3	40
3	42
4	26
3	37
3	37
10	10
8	24
3	25
2	36
8	8
12	16
8	9
5	20
2	20
7	1
2	24
1	13
4	16
8	21
1	28
2	28
2	36
7	9
0	25
3	25
7	9
7	20
7	6
5	9
3	24
3	28
9	10
3	29
4	5
1	9
4	12
8	20
12	17
5	16
4	24
8	6
9	20
4	24
6	8
1	24
1	28
2	8
8	9
3	8
2	9
1	12
5	0
4	8
1	20
1	13
4	9
1	13
8	4
1	4
0	9
1	14
1	2
3	6
1	12
3	5
3	0
3	0
3	0
1	0
5	1
1	2

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 7 to 18 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, 7 to 18 September 2023 (this event)	193 records

Every Record Set

20 of 193

Every record set or tied during Extreme rain in United States, 7 to 18 September 2023, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2023-09-09	Wood	Record daily precipitation	26.7 mm (1.1 in)	5.1 mm (0.20 in)	101	45 of 100 (Notable)
2023-09-10	Curtis	Record daily precipitation	38.6 mm (1.5 in)	6.3 mm (0.25 in)	110	45 of 100 (Notable)
2023-09-10	Owl Creek	Record daily precipitation	35.6 mm (1.4 in)	25.4 mm (1.0 in)	20	45 of 100 (Notable)
2023-09-10	Wallace	Record daily precipitation	21.6 mm (0.9 in)	8.9 mm (0.35 in)	124	20 of 100 (Routine)
2023-09-11	Gage AP	Record daily precipitation	55.9 mm (2.2 in)	36.8 mm (1.4 in)	33	53 of 100 (Notable)
2023-09-11	Walsenburg 1 NW	Record daily precipitation	29.7 mm (1.2 in)	18.3 mm (0.7 in)	40	51 of 100 (Notable)
2023-09-11	Pueblo Rsvr	Record daily precipitation	26.7 mm (1.1 in)	19.8 mm (0.8 in)	16	49 of 100 (Notable)
2023-09-11	Florissant Fossil Beds	Record daily precipitation	27.7 mm (1.1 in)	23.9 mm (0.9 in)	16	48 of 100 (Notable)
2023-09-11	Pueblo Mem AP	Record daily precipitation	25.9 mm (1.0 in)	16.5 mm (0.6 in)	37	48 of 100 (Notable)
2023-09-13	Roosevelt 1 S	Record daily precipitation	120.1 mm (4.7 in)	14.9 mm (0.6 in)	45	56 of 100 (Notable)
2023-09-13	Cliff 11 SE	Record daily precipitation	38.1 mm (1.5 in)	19.0 mm (0.7 in)	64	48 of 100 (Notable)
2023-09-13	Cortez	Record daily precipitation	27.4 mm (1.1 in)	8.9 mm (0.35 in)	81	47 of 100 (Notable)
2023-09-13	Crosho	Record daily precipitation	50.8 mm (2.0 in)	12.7 mm (0.5 in)	25	46 of 100 (Notable)
2023-09-14	Boulder	Record daily precipitation	39.1 mm (1.5 in)	14.2 mm (0.6 in)	120	52 of 100 (Notable)
2023-09-14	Stephenville Clark Fld	Record daily precipitation	67.8 mm (2.7 in)	18.8 mm (0.7 in)	76	44 of 100 (Notable)
2023-09-15	Brighton 3 SE	Record daily precipitation	41.9 mm (1.6 in)	27.2 mm (1.1 in)	36	54 of 100 (Notable)
2023-09-15	Northglenn	Record daily precipitation	41.9 mm (1.6 in)	23.4 mm (0.9 in)	12	44 of 100 (Notable)
2023-09-16	Breckenridge	Record daily precipitation	17.3 mm (0.7 in)	2.1 mm (0.08 in)	118	20 of 100 (Routine)
2023-09-16	Buena Vista 2S	Record daily precipitation	18.0 mm (0.7 in)	3.3 mm (0.13 in)	116	20 of 100 (Routine)
2023-09-16	Monte Vista 2W	Record daily precipitation	23.4 mm (0.9 in)	13.5 mm (0.5 in)	60	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 193 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
15	45
27	36
14	60
37	33
14	120
18	40
20	16
24	16
19	64
17	37
9	81
3	116
9	124
13	25
6	110
5	101
25	20
2	118
23	12
19	76
16	64
16	65
28	56
2	120
8	76
13	86
19	34
7	72
1	104
8	68
0	120
7	72
11	52
5	50
36	24
6	58
12	56
23	33
10	24
43	0
23	36
6	64
16	20
11	36
5	64
21	12
7	76
17	64
38	26
10	34
13	13
15	10
11	73
5	72
2	68
23	32
11	33
15	29
18	46
22	28
1	73
35	9
8	26
6	44
1	64
3	56
22	36
10	20
1	68
4	46
9	33
10	37
4	42
4	48
10	56
8	42
20	8
6	13
8	33
6	56
3	49
8	25
15	29
3	60
9	28
2	56
5	48
2	46
2	61
8	42
2	48
11	42
9	40
6	13
8	32
3	53
11	16
16	14
13	28
3	34
9	12
6	20
10	34
3	44
5	40
13	4
12	20
6	32
5	26
9	29
3	36
1	33
12	28
13	24
3	40
11	29
5	24
9	9
5	34
15	26
5	24
8	28
3	40
3	42
4	26
3	37
3	37
10	10
8	24
3	25
2	36
8	8
12	16
8	9
5	20
2	20
7	1
2	24
1	13
4	16
8	21
1	28
2	28
2	36
7	9
0	25
3	25
7	9
7	20
7	6
5	9
3	24
3	28
9	10
3	29
4	5
1	9
4	12
8	20
12	17
5	16
4	24
8	6
9	20
4	24
6	8
1	24
1	28
2	8
8	9
3	8
2	9
1	12
5	0
4	8
1	20
1	13
4	9
1	13
8	4
1	4
0	9
1	14
1	2
3	6
1	12
3	5
3	0
3	0
3	0
1	0
5	1
1	2

Margin (mm)	Years the old record stood
15	45
27	36
14	60
37	33
14	120
18	40
20	16
24	16
19	64
17	37
9	81
3	116
9	124
13	25
6	110
5	101
25	20
2	118
23	12
19	76
16	64
16	65
28	56
2	120
8	76
13	86
19	34
7	72
1	104
8	68
0	120
7	72
11	52
5	50
36	24
6	58
12	56
23	33
10	24
43	0
23	36
6	64
16	20
11	36
5	64
21	12
7	76
17	64
38	26
10	34
13	13
15	10
11	73
5	72
2	68
23	32
11	33
15	29
18	46
22	28
1	73
35	9
8	26
6	44
1	64
3	56
22	36
10	20
1	68
4	46
9	33
10	37
4	42
4	48
10	56
8	42
20	8
6	13
8	33
6	56
3	49
8	25
15	29
3	60
9	28
2	56
5	48
2	46
2	61
8	42
2	48
11	42
9	40
6	13
8	32
3	53
11	16
16	14
13	28
3	34
9	12
6	20
10	34
3	44
5	40
13	4
12	20
6	32
5	26
9	29
3	36
1	33
12	28
13	24
3	40
11	29
5	24
9	9
5	34
15	26
5	24
8	28
3	40
3	42
4	26
3	37
3	37
10	10
8	24
3	25
2	36
8	8
12	16
8	9
5	20
2	20
7	1
2	24
1	13
4	16
8	21
1	28
2	28
2	36
7	9
0	25
3	25
7	9
7	20
7	6
5	9
3	24
3	28
9	10
3	29
4	5
1	9
4	12
8	20
12	17
5	16
4	24
8	6
9	20
4	24
6	8
1	24
1	28
2	8
8	9
3	8
2	9
1	12
5	0
4	8
1	20
1	13
4	9
1	13
8	4
1	4
0	9
1	14
1	2
3	6
1	12
3	5
3	0
3	0
3	0
1	0
5	1
1	2

Margin (mm)	Years the old record stood
15	45
27	36
14	60
37	33
14	120
18	40
20	16
24	16
19	64
17	37
9	81
3	116
9	124
13	25
6	110
5	101
25	20
2	118
23	12
19	76
16	64
16	65
28	56
2	120
8	76
13	86
19	34
7	72
1	104
8	68
0	120
7	72
11	52
5	50
36	24
6	58
12	56
23	33
10	24
43	0
23	36
6	64
16	20
11	36
5	64
21	12
7	76
17	64
38	26
10	34
13	13
15	10
11	73
5	72
2	68
23	32
11	33
15	29
18	46
22	28
1	73
35	9
8	26
6	44
1	64
3	56
22	36
10	20
1	68
4	46
9	33
10	37
4	42
4	48
10	56
8	42
20	8
6	13
8	33
6	56
3	49
8	25
15	29
3	60
9	28
2	56
5	48
2	46
2	61
8	42
2	48
11	42
9	40
6	13
8	32
3	53
11	16
16	14
13	28
3	34
9	12
6	20
10	34
3	44
5	40
13	4
12	20
6	32
5	26
9	29
3	36
1	33
12	28
13	24
3	40
11	29
5	24
9	9
5	34
15	26
5	24
8	28
3	40
3	42
4	26
3	37
3	37
10	10
8	24
3	25
2	36
8	8
12	16
8	9
5	20
2	20
7	1
2	24
1	13
4	16
8	21
1	28
2	28
2	36
7	9
0	25
3	25
7	9
7	20
7	6
5	9
3	24
3	28
9	10
3	29
4	5
1	9
4	12
8	20
12	17
5	16
4	24
8	6
9	20
4	24
6	8
1	24
1	28
2	8
8	9
3	8
2	9
1	12
5	0
4	8
1	20
1	13
4	9
1	13
8	4
1	4
0	9
1	14
1	2
3	6
1	12
3	5
3	0
3	0
3	0
1	0
5	1
1	2