Historical Ranked Daily Data for September - Mean Temp Anom / C
Weather Variable:
| Highest | ||
| Rank | Value | Date |
| 1 | 9.4 | 13 Sep 2016 |
| 2 | 8.8 | 09 Sep 2023 |
| 3 | 7.7 | 14 Sep 2016 |
| 4 | 7.4 | 10 Sep 2023 |
| 5 | 7.2 | 07 Sep 2023 |
| 6 | 6.9 | 08 Sep 2023 |
| 7 | 6.9 | 15 Sep 2016 |
| 8 | 6.7 | 15 Sep 2020 |
| 9 | 6.3 | 07 Sep 2016 |
| 10 | 6.0 | 06 Sep 2023 |
| 11 | 5.9 | 29 Sep 2011 |
| 12 | 5.8 | 30 Sep 2011 |
| 13 | 5.8 | 11 Sep 2023 |
| 14 | 5.3 | 16 Sep 2020 |
| 15 | 5.3 | 17 Sep 2018 |
| 16 | 5.2 | 08 Sep 2021 |
| 17 | 5.2 | 19 Sep 2025 |
| 18 | 4.9 | 07 Sep 2021 |
| 19 | 4.9 | 06 Sep 2016 |
| 20 | 4.8 | 28 Sep 2011 |
| 21 | 4.8 | 05 Sep 2023 |
| 22 | 4.6 | 12 Sep 2022 |
| 23 | 4.4 | 08 Sep 2009 |
| 24 | 4.4 | 05 Sep 2013 |
| 25 | 4.3 | 18 Sep 2018 |
| Lowest | ||
| Rank | Value | Date |
| 1 | -5.7 | 12 Sep 2024 |
| 2 | -5.1 | 09 Sep 2013 |
| 3 | -5.0 | 11 Sep 2024 |
| 4 | -4.9 | 26 Sep 2020 |
| 5 | -4.8 | 05 Sep 2015 |
| 6 | -4.6 | 25 Sep 2010 |
| 7 | -4.6 | 13 Sep 2024 |
| 8 | -4.5 | 28 Sep 2024 |
| 9 | -4.4 | 03 Sep 2015 |
| 10 | -4.4 | 28 Sep 2022 |
| 11 | -4.4 | 14 Sep 2013 |
| 12 | -4.3 | 06 Sep 2015 |
| 13 | -4.2 | 08 Sep 2019 |
| 14 | -4.1 | 23 Sep 2012 |
| 15 | -4.1 | 15 Sep 2017 |
| 16 | -4.1 | 17 Sep 2022 |
| 17 | -4.0 | 16 Sep 2013 |
| 18 | -4.0 | 04 Sep 2015 |
| 19 | -4.0 | 23 Sep 2018 |
| 20 | -3.9 | 17 Sep 2013 |
| 21 | -3.9 | 19 Sep 2017 |
| 22 | -3.9 | 16 Sep 2017 |
| 23 | -3.8 | 02 Sep 2015 |
| 24 | -3.8 | 25 Sep 2020 |
| 25 | -3.7 | 08 Sep 2013 |
Ranked daily data from 2009 to present for London, nw3. For Mean Temp Anom, there are 510 valid values in Sep