Cold outbreak in United Kingdom and 11 other countries, 19 to 28 May 2021
Cold outbreak in United Kingdom and 11 other countries, 19 to 28 May 2021: 100 records at 84 stations, peak on 26 May 2021. Closed.
Data as of . Last revised (2026-10-17).
Key Facts
- Cold outbreak in United Kingdom and 11 other countries, 19 to 28 May 2021 set or tied 100 station records at 84 stations.
- It ran from 19 May 2021 to 28 May 2021 (10 days) and its peak day was 26 May 2021.
- Status: closed.
- Wien set a daily record low minimum temperature of 4.7 C (40.5 F) on 26 May 2021.
- The busiest day was 26 May 2021 with 21 records.
- The oldest broken record in the ranked list had stood for 143 years.
Footprint
19 to 28 May 2021| Station | Type | Value | Date |
|---|---|---|---|
| Wien | Record low minimum temperature | 4.7 C (40.5 F) | 2021-05-26 |
| Graz | Record low minimum temperature | 2.4 C (36.3 F) | 2021-05-26 |
| Osijek | Record low minimum temperature | 5.0 C (41.0 F) | 2021-05-26 |
| Mittenwald-Buckelwiesen | Record low minimum temperature | -1.5 C (29.3 F) | 2021-05-26 |
| Ghedi | Record low maximum temperature | 14.0 C (57.2 F) | 2021-05-24 |
| Turany | Record low minimum temperature | 2.6 C (36.7 F) | 2021-05-26 |
| Kremsmuenster | Record low minimum temperature | 4.5 C (40.1 F) | 2021-05-26 |
| Hayling Island | Record low minimum temperature | 1.0 C (33.8 F) | 2021-05-28 |
| Waddington | Record low minimum temperature | 2.9 C (37.2 F) | 2021-05-26 |
| Zaragoza | Record low maximum temperature | 14.6 C (58.3 F) | 2021-05-23 |
| Varazdin | Record low minimum temperature | 3.9 C (39.0 F) | 2021-05-26 |
| Aberporth | Record low minimum temperature | 4.2 C (39.6 F) | 2021-05-27 |
| Gogerddan | Record low maximum temperature | 10.1 C (50.2 F) | 2021-05-20 |
| Plymouth: Mountbatten | Record low minimum temperature | 4.7 C (40.5 F) | 2021-05-23 |
| Faskally | Record low maximum temperature | 8.9 C (48.0 F) | 2021-05-23 |
| Kinlochewe | Record low maximum temperature | 9.4 C (48.9 F) | 2021-05-20 |
| Hillsborough | Record low maximum temperature | 10.0 C (50.0 F) | 2021-05-19 |
| Bude | Record low maximum temperature | 11.5 C (52.7 F) | 2021-05-21 |
| Helgoland | Record low maximum temperature | 10.2 C (50.4 F) | 2021-05-26 |
Records per Day
Peak day 21| Date | Records |
|---|---|
| 2021-05-19 | 3 |
| 2021-05-20 | 8 |
| 2021-05-21 | 4 |
| 2021-05-22 | 6 |
| 2021-05-23 | 15 |
| 2021-05-24 | 13 |
| 2021-05-25 | 14 |
| 2021-05-26 | 21 |
| 2021-05-27 | 10 |
| 2021-05-28 | 6 |
Top Records by Margin
Margin over the record replaced| Ghedi, 05-24 | |
|---|---|
| Graz, 05-26 | |
| Mittenwald-Buckelwiesen, 05-26 | |
| Faskally, 05-23 | |
| Gogerddan, 05-20 | |
| Wien, 05-26 | |
| Turany, 05-26 | |
| Hayling Island, 05-28 | |
| Zaragoza, 05-23 | |
| Varazdin, 05-26 | |
| Kinlochewe, 05-20 | |
| Hillsborough, 05-19 | |
| Kremsmuenster, 05-26 | |
| Aberporth, 05-27 | |
| Waddington, 05-26 |
Margin is how far the new value is beyond the record it replaced. Ties are not shown.
Margin Against Age of the Broken Record
| Margin (C) | Years the old record stood |
|---|---|
| 1.3 | 143 |
| 2.9 | 83 |
| 0.2 | 110 |
| 1.9 | 59 |
| 1.3 | 60 |
| 5.0 | 46 |
| 0.5 | 59 |
| 1.2 | 60 |
| 0.4 | 64 |
| 0.6 | 60 |
| 1.0 | 62 |
| 0.5 | 60 |
| 1.6 | 52 |
| 0.4 | 60 |
| 1.7 | 50 |
| 0.6 | 59 |
| 0.3 | 50 |
| 0.1 | 58 |
| 0.2 | 58 |
| 0.6 | 52 |
| 0.1 | 59 |
| 1.4 | 46 |
| 0.6 | 52 |
| 1.1 | 42 |
| 0.1 | 47 |
| 0.2 | 52 |
| 0.2 | 52 |
| 1.0 | 48 |
| 0.9 | 24 |
| 1.4 | 38 |
| 0.8 | 38 |
| 2.1 | 36 |
| 0.9 | 40 |
| 0.9 | 43 |
| 0.8 | 36 |
| 0.2 | 47 |
| 0.1 | 47 |
| 0.4 | 42 |
| 0.9 | 42 |
| 1.2 | 38 |
| 0.6 | 30 |
| 0.5 | 20 |
| 1.1 | 38 |
| 1.3 | 30 |
| 1.1 | 36 |
| 0.6 | 34 |
| 0.9 | 27 |
| 0.5 | 34 |
| 0.6 | 24 |
| 0.3 | 27 |
| 1.3 | 24 |
| 0.2 | 43 |
| 0.4 | 34 |
| 0.1 | 40 |
| 0.8 | 36 |
| 0.4 | 38 |
| 0.9 | 34 |
| 0.1 | 38 |
| 0.3 | 30 |
| 1.9 | 11 |
| 0.8 | 34 |
| 0.2 | 36 |
| 0.3 | 27 |
| 0.7 | 30 |
| 0.9 | 30 |
| 1.9 | 24 |
| 0.6 | 30 |
| 0.1 | 30 |
| 1.1 | 27 |
| 0.2 | 24 |
| 0.4 | 27 |
| 0.2 | 30 |
| 0.1 | 30 |
| 0.5 | 27 |
| 0.3 | 30 |
| 0.9 | 24 |
| 1.1 | 20 |
| 1.1 | 24 |
| 0.1 | 30 |
| 0.3 | 23 |
| 0.8 | 8 |
| 0.4 | 24 |
| 0.6 | 8 |
| 0.3 | 27 |
| 0.8 | 16 |
| 0.3 | 27 |
| 1.5 | 8 |
| 0.4 | 6 |
| 0.3 | 16 |
| 1.0 | 15 |
| 0.1 | 15 |
| 0.1 | 15 |
| 1.4 | 15 |
| 0.1 | 16 |
| 0.5 | 8 |
| 1.6 | 6 |
| 1.1 | 8 |
| 0.1 | 8 |
| 0.7 | 4 |
| 0.4 | 8 |
Compared With Other Events
Station records per event| Cold outbreak in United States and Mexico, 6 February to 5 March 2021 | |
|---|---|
| Cold outbreak in United States and Mexico, 13 October to 5 November 2020 | |
| Cold outbreak in United States and Mexico, 23 December 2017 to 8 January 2018 | |
| Cold outbreak in United States and Mexico, 3 to 23 January 2024 | |
| Cold outbreak in United States, 15 January to 10 February 2026 | |
| Cold outbreak in United Kingdom and 11 other countries, 19 to 28 May 2021 (this event) |
Every Record Set
20 of 100| Date | Station | Record | Value | Margin | Years stood | Significance |
|---|---|---|---|---|---|---|
| 2021-05-19 | Hillsborough | Record low maximum temperature | 10.0 C (50.0 F) | 0.6 C (1.1 F) | 52 | 23 of 100 (Routine) |
| 2021-05-20 | Gogerddan | Record low maximum temperature | 10.1 C (50.2 F) | 1.6 C (2.9 F) | 52 | 25 of 100 (Routine) |
| 2021-05-20 | Kinlochewe | Record low maximum temperature | 9.4 C (48.9 F) | 0.6 C (1.1 F) | 59 | 24 of 100 (Routine) |
| 2021-05-20 | Plymouth: Mountbatten | Record low maximum temperature | 11.9 C (53.4 F) | 0.1 C (0.2 F) | 58 | 23 of 100 (Routine) |
| 2021-05-21 | Bude | Record low maximum temperature | 11.5 C (52.7 F) | 0.2 C (0.4 F) | 58 | 23 of 100 (Routine) |
| 2021-05-23 | Zaragoza | Record low maximum temperature | 14.6 C (58.3 F) | 1.0 C (1.8 F) | 62 | 26 of 100 (Routine) |
| 2021-05-23 | Plymouth: Mountbatten | Record low minimum temperature | 4.7 C (40.5 F) | 0.4 C (0.7 F) | 60 | 25 of 100 (Routine) |
| 2021-05-23 | Faskally | Record low maximum temperature | 8.9 C (48.0 F) | 1.7 C (3.1 F) | 50 | 25 of 100 (Routine) |
| 2021-05-24 | Ghedi | Record low maximum temperature | 14.0 C (57.2 F) | 5.0 C (9.0 F) | 46 | 29 of 100 (Routine) |
| 2021-05-26 | Wien | Record low minimum temperature | 4.7 C (40.5 F) | 1.3 C (2.3 F) | 143 | 43 of 100 (Notable) |
| 2021-05-26 | Graz | Record low minimum temperature | 2.4 C (36.3 F) | 2.9 C (5.2 F) | 83 | 42 of 100 (Notable) |
| 2021-05-26 | Osijek | Record low minimum temperature | 5.0 C (41.0 F) | 0.2 C (0.4 F) | 110 | 40 of 100 (Notable) |
| 2021-05-26 | Mittenwald-Buckelwiesen | Record low minimum temperature | -1.5 C (29.3 F) | 1.9 C (3.4 F) | 59 | 30 of 100 (Routine) |
| 2021-05-26 | Turany | Record low minimum temperature | 2.6 C (36.7 F) | 1.3 C (2.3 F) | 60 | 29 of 100 (Routine) |
| 2021-05-26 | Kremsmuenster | Record low minimum temperature | 4.5 C (40.1 F) | 0.5 C (0.9 F) | 59 | 28 of 100 (Routine) |
| 2021-05-26 | Waddington | Record low minimum temperature | 2.9 C (37.2 F) | 0.4 C (0.7 F) | 64 | 27 of 100 (Routine) |
| 2021-05-26 | Varazdin | Record low minimum temperature | 3.9 C (39.0 F) | 0.6 C (1.1 F) | 60 | 26 of 100 (Routine) |
| 2021-05-26 | Helgoland | Record low maximum temperature | 10.2 C (50.4 F) | 0.3 C (0.5 F) | 50 | 23 of 100 (Routine) |
| 2021-05-27 | Aberporth | Record low minimum temperature | 4.2 C (39.6 F) | 0.5 C (0.9 F) | 60 | 26 of 100 (Routine) |
| 2021-05-28 | Hayling Island | Record low minimum temperature | 1.0 C (33.8 F) | 1.2 C (2.2 F) | 60 | 28 of 100 (Routine) |
The daily ledgers keep a limited number of records per day, so this list has 20 of the 100 records the event counts. The counts above use the full total.
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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.