On This Day, 21 May: Notable Weather Records
20 notable weather records on 21 May across the years, led by Spokane Intl AP, US, with events and storms for the date.
Key Facts for 21 May
- 20 notable weather records were set or tied on 21 May in 12 years (1981 to 2024).
- Spokane Intl AP set an all-time record daily precipitation of 55.6 mm (2.2 in) on 21 May 2004.
- 7 extreme weather events peaked on 21 May.
- 1 named storm were active on 21 May.
Records on 21 May Through the Years
1981 to 2024| Date | Kind | Detail |
|---|---|---|
| 1981-05-21 | Record daily precipitation | Moreton Telegraph Station, 80.6 mm (3.2 in) |
| 1981-05-21 | Record daily precipitation | Prairie Post Office, 70.4 mm (2.8 in) |
| 1984-05-21 | Record daily precipitation | Den Helder-1, 35.0 mm (1.4 in) |
| 1990-05-21 | Record daily precipitation | Undoolya, 38.8 mm (1.5 in) |
| 1990-05-21 | Record daily precipitation | Evesham Station, 132.0 mm (5.2 in) |
| 1996-05-21 | Record daily precipitation | Kalmar_D, 32.6 mm (1.3 in) |
| 1999-05-21 | Record daily precipitation | Mittenwald-Buckelwiesen, 159.9 mm (6.3 in) |
| 1999-05-21 | Record daily precipitation | Garmisch-Partenkirchen, 138.2 mm (5.4 in) |
| 2004-05-21 | Record daily precipitation | Spokane Intl AP, 55.6 mm (2.2 in) |
| 2006-05-21 | Record daily precipitation | Priest Valley, 68.6 mm (2.7 in) |
| 2009-05-21 | Record daily precipitation | Kyogle Post Office, 110.0 mm (4.3 in) |
| 2014-05-21 | Record daily precipitation | Tambellup, 48.6 mm (1.9 in) |
| 2017-05-21 | Record daily precipitation | Avoca (Railway House), 43.2 mm (1.7 in) |
| 2017-05-21 | Record daily precipitation | Haines AP, 60.2 mm (2.4 in) |
| 2019-05-21 | Record daily precipitation | Walnut 4S, 102.4 mm (4.0 in) |
| 2019-05-21 | Record daily snowfall | Agate 3 E, 20.3 cm (8.0 in) |
| 2019-05-21 | Record daily precipitation | Newkirk 5NE, 173.0 mm (6.8 in) |
| 2024-05-21 | Record daily precipitation | Fremont, 160.5 mm (6.3 in) |
| 2024-05-21 | Record daily precipitation | Wuppertal-Buchenhofen, 73.5 mm (2.9 in) |
| 2024-05-21 | Record daily precipitation | Tiruchchirapalli, 129.0 mm (5.1 in) |
Notable Records
| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 21 May 2004 | Spokane Intl AP, US | all-time rain | 55.6 mm (2.2 in) | 13.4 mm (0.5 in) | 106 years | 87 of 100 (Exceptional) |
| 21 May 2024 | Fremont, US | monthly rain | 160.5 mm (6.3 in) | 61.4 mm (2.4 in) | 79 years | 83 of 100 (Exceptional) |
| 21 May 1984 | Den Helder-1, NL | daily rain | 35.0 mm (1.4 in) | 19.2 mm (0.8 in) | 127 years | 80 of 100 (Exceptional) |
| 21 May 2019 | Walnut 4S, US | daily rain | 102.4 mm (4.0 in) | 65.3 mm (2.6 in) | 116 years | 80 of 100 (Exceptional) |
| 21 May 2009 | Kyogle Post Office, AU | daily rain | 110.0 mm (4.3 in) | 78.2 mm (3.1 in) | 103 years | 80 of 100 (Exceptional) |
| 21 May 2019 | Agate 3 E, US | daily snowfall | 20.3 cm (8.0 in) | 20.3 cm (8.0 in) | 116 years | 79 of 100 (Major) |
| 21 May 2017 | Avoca (Railway House), AU | daily rain | 43.2 mm (1.7 in) | 30.8 mm (1.2 in) | 94 years | 78 of 100 (Major) |
| 21 May 1981 | Moreton Telegraph Station, AU | monthly rain | 80.6 mm (3.2 in) | 45.0 mm (1.8 in) | 65 years | 78 of 100 (Major) |
| 21 May 1996 | Kalmar_D, SE | daily rain | 32.6 mm (1.3 in) | 17.8 mm (0.7 in) | 108 years | 77 of 100 (Major) |
| 21 May 2017 | Haines AP, US | monthly rain | 60.2 mm (2.4 in) | 23.1 mm (0.9 in) | 72 years | 77 of 100 (Major) |
| 21 May 1999 | Mittenwald-Buckelwiesen, DE | all-time rain | 159.9 mm (6.3 in) | 41.3 mm (1.6 in) | 39 years | 77 of 100 (Major) |
| 21 May 1999 | Garmisch-Partenkirchen, DE | all-time rain | 138.2 mm (5.4 in) | 43.3 mm (1.7 in) | 39 years | 77 of 100 (Major) |
| 21 May 2019 | Newkirk 5NE, US | monthly rain | 173.0 mm (6.8 in) | 46.0 mm (1.8 in) | 109 years | 76 of 100 (Major) |
| 21 May 1981 | Prairie Post Office, AU | daily rain | 70.4 mm (2.8 in) | 70.4 mm (2.8 in) | 92 years | 76 of 100 (Major) |
| 21 May 1990 | Undoolya, AU | daily rain | 38.8 mm (1.5 in) | 38.8 mm (1.5 in) | 91 years | 76 of 100 (Major) |
| 21 May 2014 | Tambellup, AU | daily rain | 48.6 mm (1.9 in) | 28.8 mm (1.1 in) | 88 years | 76 of 100 (Major) |
| 21 May 2024 | Wuppertal-Buchenhofen, DE | monthly rain | 73.5 mm (2.9 in) | 21.9 mm (0.9 in) | 69 years | 76 of 100 (Major) |
| 21 May 1990 | Evesham Station, AU | monthly rain | 132.0 mm (5.2 in) | 76.1 mm (3.0 in) | 53 years | 76 of 100 (Major) |
| 21 May 2024 | Tiruchchirapalli, IN | daily rain | 129.0 mm (5.1 in) | 68.0 mm (2.7 in) | 114 years | 75 of 100 (Major) |
| 21 May 2006 | Priest Valley, US | monthly rain | 68.6 mm (2.7 in) | 21.1 mm (0.8 in) | 99 years | 75 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).