On This Day, 17 September: Notable Weather Records
20 notable weather records on 17 September across the years, led by Somerville 4 NW, US, with events and storms for the date.
Key Facts for 17 September
- 20 notable weather records were set or tied on 17 September in 10 years (1971 to 2020).
- Somerville 4 NW set a monthly record daily precipitation of 205.7 mm (8.1 in) on 17 September 1999.
- 4 extreme weather events peaked on 17 September.
- 10 named storms were active on 17 September.
Records on 17 September Through the Years
1971 to 2020| Date | Kind | Detail |
|---|---|---|
| 1971-09-17 | Record daily snowfall | Ft Collins, 33.0 cm (13.0 in) |
| 1983-09-17 | Record daily precipitation | Gysinge, 51.4 mm (2.0 in) |
| 1986-09-17 | Record daily precipitation | Brookings 2 NE, 104.4 mm (4.1 in) |
| 1986-09-17 | Record daily precipitation | Sonnblick, 156.1 mm (6.1 in) |
| 1988-09-17 | Record daily precipitation | Chatsbury (Maryland), 96.0 mm (3.8 in) |
| 1999-09-17 | Record daily precipitation | Somerville 4 NW, 205.7 mm (8.1 in) |
| 1999-09-17 | Record daily precipitation | Woodstock, 139.7 mm (5.5 in) |
| 1999-09-17 | Record daily precipitation | Saint Johnsbury, 115.1 mm (4.5 in) |
| 1999-09-17 | Record daily precipitation | Grafton, 115.1 mm (4.5 in) |
| 1999-09-17 | Record daily precipitation | W Pt, 184.9 mm (7.3 in) |
| 1999-09-17 | Record daily precipitation | Berlin, 165.1 mm (6.5 in) |
| 1999-09-17 | Record daily precipitation | Northfield, 136.4 mm (5.4 in) |
| 2004-09-17 | Record daily precipitation | Clayton 1 SSW, 323.9 mm (12.8 in) |
| 2004-09-17 | Record daily precipitation | Waynesville 1 E, 118.1 mm (4.6 in) |
| 2013-09-17 | Record daily precipitation | Seymour Shire Depot, 54.0 mm (2.1 in) |
| 2014-09-17 | Record daily precipitation | Fort Huachuca, 49.8 mm (2.0 in) |
| 2016-09-17 | Record daily precipitation | Regensburg, 41.8 mm (1.6 in) |
| 2016-09-17 | Record daily precipitation | Metten, 77.6 mm (3.1 in) |
| 2020-09-17 | Record daily precipitation | Americus, 158.2 mm (6.2 in) |
| 2020-09-17 | Record daily precipitation | Cordele, 106.7 mm (4.2 in) |
Notable Records
| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 17 September 1999 | Somerville 4 NW, US | monthly rain | 205.7 mm (8.1 in) | 101.6 mm (4.0 in) | 95 years | 88 of 100 (Exceptional) |
| 17 September 1986 | Brookings 2 NE, US | monthly rain | 104.4 mm (4.1 in) | 39.9 mm (1.6 in) | 86 years | 84 of 100 (Exceptional) |
| 17 September 1986 | Sonnblick, AT | all-time rain | 156.1 mm (6.1 in) | 47.7 mm (1.9 in) | 51 years | 83 of 100 (Exceptional) |
| 17 September 1999 | Woodstock, US | all-time rain | 139.7 mm (5.5 in) | 27.2 mm (1.1 in) | 104 years | 81 of 100 (Exceptional) |
| 17 September 1988 | Chatsbury (Maryland), AU | monthly rain | 96.0 mm (3.8 in) | 43.4 mm (1.7 in) | 73 years | 81 of 100 (Exceptional) |
| 17 September 2004 | Clayton 1 SSW, US | all-time rain | 323.9 mm (12.8 in) | 120.2 mm (4.7 in) | 39 years | 81 of 100 (Exceptional) |
| 17 September 2020 | Americus, US | daily rain | 158.2 mm (6.2 in) | 91.1 mm (3.6 in) | 119 years | 80 of 100 (Exceptional) |
| 17 September 2016 | Regensburg, DE | daily rain | 41.8 mm (1.6 in) | 25.3 mm (1.0 in) | 116 years | 80 of 100 (Exceptional) |
| 17 September 2016 | Metten, DE | daily rain | 77.6 mm (3.1 in) | 45.1 mm (1.8 in) | 110 years | 80 of 100 (Exceptional) |
| 17 September 2004 | Waynesville 1 E, US | daily rain | 118.1 mm (4.6 in) | 85.1 mm (3.4 in) | 103 years | 80 of 100 (Exceptional) |
| 17 September 2014 | Fort Huachuca, US | daily rain | 49.8 mm (2.0 in) | 35.6 mm (1.4 in) | 107 years | 79 of 100 (Major) |
| 17 September 1999 | Saint Johnsbury, US | monthly rain | 115.1 mm (4.5 in) | 35.1 mm (1.4 in) | 79 years | 79 of 100 (Major) |
| 17 September 1971 | Ft Collins, US | monthly snowfall | 33.0 cm (13.0 in) | 22.8 cm (9.0 in) | 75 years | 79 of 100 (Major) |
| 17 September 2020 | Cordele, US | daily rain | 106.7 mm (4.2 in) | 73.7 mm (2.9 in) | 125 years | 78 of 100 (Major) |
| 17 September 2013 | Seymour Shire Depot, AU | daily rain | 54.0 mm (2.1 in) | 29.9 mm (1.2 in) | 96 years | 78 of 100 (Major) |
| 17 September 1983 | Gysinge, SE | daily rain | 51.4 mm (2.0 in) | 29.2 mm (1.1 in) | 95 years | 78 of 100 (Major) |
| 17 September 1999 | Grafton, US | monthly rain | 115.1 mm (4.5 in) | 35.1 mm (1.4 in) | 94 years | 78 of 100 (Major) |
| 17 September 1999 | W Pt, US | all-time rain | 184.9 mm (7.3 in) | 45.2 mm (1.8 in) | 74 years | 78 of 100 (Major) |
| 17 September 1999 | Berlin, US | all-time rain | 165.1 mm (6.5 in) | 34.3 mm (1.4 in) | 66 years | 78 of 100 (Major) |
| 17 September 1999 | Northfield, US | monthly rain | 136.4 mm (5.4 in) | 61.5 mm (2.4 in) | 60 years | 78 of 100 (Major) |
Events
Storms
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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-12).