Historical Ranked Daily Data for May - Maximum Rain Rate / mm/h
Weather Variable:
| Highest | ||
| Rank | Value | Date |
| 1 | 100 | 02 May 2024 |
| 2 | 100 | 29 May 2017 |
| 3 | 96 | 12 May 2025 |
| 4 | 80 | 26 May 2011 |
| 5 | 78 | 06 May 2015 |
| 6 | 66 | 22 May 2024 |
| 7 | 60 | 21 May 2024 |
| 8 | 60 | 16 May 2010 |
| 9 | 60 | 01 May 2010 |
| 10 | 54 | 01 May 2020 |
| 11 | 54 | 11 May 2016 |
| 12 | 54 | 12 May 2014 |
| 13 | 48 | 06 May 2024 |
| 14 | 40 | 27 May 2018 |
| 15 | 36 | 03 May 2017 |
| 16 | 36 | 19 May 2015 |
| 17 | 33 | 17 May 2009 |
| 18 | 30 | 03 May 2024 |
| 19 | 30 | 11 May 2023 |
| 20 | 30 | 28 May 2017 |
| 21 | 30 | 18 May 2016 |
| 22 | 30 | 22 May 2014 |
| 23 | 30 | 02 May 2010 |
| 24 | 26 | 24 May 2019 |
| 25 | 26 | 08 May 2019 |
| Lowest | ||
| Rank | Value | Date |
| 1 | 0.3 | 14 May 2021 |
| 2 | 0.4 | 12 May 2013 |
| 3 | 0.4 | 15 May 2015 |
| 4 | 0.4 | 26 May 2018 |
| 5 | 0.4 | 23 May 2022 |
| 6 | 0.4 | 11 May 2026 |
| 7 | 0.6 | 27 May 2009 |
| 8 | 0.6 | 19 May 2026 |
| 9 | 0.7 | 12 May 2017 |
| 10 | 0.7 | 30 May 2018 |
| 11 | 0.7 | 19 May 2021 |
| 12 | 0.8 | 19 May 2009 |
| 13 | 0.8 | 18 May 2015 |
| 14 | 0.9 | 08 May 2012 |
| 15 | 0.9 | 14 May 2012 |
| 16 | 0.9 | 04 May 2021 |
| 17 | 0.9 | 10 May 2022 |
| 18 | 1.0 | 15 May 2017 |
| 19 | 1.1 | 08 May 2013 |
| 20 | 1.1 | 29 May 2019 |
| 21 | 1.2 | 31 May 2015 |
| 22 | 1.3 | 27 May 2010 |
| 23 | 1.3 | 24 May 2018 |
| 24 | 1.5 | 30 May 2011 |
| 25 | 1.5 | 21 May 2014 |
Ranked daily data from 2009 to present for London, NW3. For Maximum Rain Rate, there are 145 valid values in May.