Historical Ranked Daily Data for May - Minimum Dew Point / °C
Weather Variable:
| Highest | ||
| Rank | Value | Date |
| 1 | 14.2 | 31 May 2018 |
| 2 | 13.6 | 23 May 2026 |
| 3 | 13.4 | 28 May 2018 |
| 4 | 13.1 | 26 May 2018 |
| 5 | 12.9 | 25 May 2026 |
| 6 | 12.8 | 27 May 2018 |
| 7 | 12.6 | 24 May 2012 |
| 8 | 12.6 | 10 May 2012 |
| 9 | 12.3 | 30 May 2025 |
| 10 | 12.1 | 10 May 2016 |
| 11 | 12.0 | 29 May 2018 |
| 12 | 11.9 | 16 May 2017 |
| 13 | 11.8 | 28 May 2009 |
| 14 | 11.7 | 24 May 2026 |
| 15 | 11.7 | 30 May 2018 |
| 16 | 11.6 | 22 May 2024 |
| 17 | 11.5 | 29 May 2017 |
| 18 | 11.3 | 14 May 2024 |
| 19 | 11.1 | 25 May 2018 |
| 20 | 11.0 | 28 May 2026 |
| 21 | 10.9 | 29 May 2024 |
| 22 | 10.9 | 30 May 2019 |
| 23 | 10.7 | 27 May 2026 |
| 24 | 10.7 | 26 May 2026 |
| 25 | 10.7 | 31 May 2025 |
| Lowest | ||
| Rank | Value | Date |
| 1 | -5.4 | 02 May 2013 |
| 2 | -4.2 | 03 May 2011 |
| 3 | -3.9 | 04 May 2016 |
| 4 | -3.7 | 05 May 2016 |
| 5 | -2.7 | 01 May 2013 |
| 6 | -2.6 | 03 May 2013 |
| 7 | -2.2 | 04 May 2009 |
| 8 | -2.2 | 12 May 2010 |
| 9 | -2.2 | 23 May 2013 |
| 10 | -2.0 | 03 May 2009 |
| 11 | -2.0 | 01 May 2016 |
| 12 | -1.9 | 02 May 2011 |
| 13 | -1.9 | 04 May 2011 |
| 14 | -1.9 | 13 May 2019 |
| 15 | -1.8 | 13 May 2010 |
| 16 | -1.7 | 03 May 2010 |
| 17 | -1.7 | 08 May 2021 |
| 18 | -1.5 | 11 May 2020 |
| 19 | -1.5 | 06 May 2021 |
| 20 | -1.4 | 03 May 2014 |
| 21 | -1.3 | 12 May 2012 |
| 22 | -1.2 | 04 May 2010 |
| 23 | -1.2 | 11 May 2010 |
| 24 | -1.2 | 11 May 2012 |
| 25 | -1.2 | 11 May 2026 |
Ranked daily data from 2009 to present for London, NW3. For Minimum Dew Point, there are 558 valid values in May.