| Station | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Lerwick | 13.7mm | 13.8mm | 13.9mm | 12.7mm | 13.3mm | 13.3mm | 12.9mm | 11.2mm | 13.3mm | 12.7mm |
| Eskdalemuir | 17.0mm | 17.9mm | 17.2mm | 16.2mm | 19.7mm | 16.4mm | 17.6mm | 15.7mm | 17.8mm | 16.9mm |
| Valley | 17.5mm | 17.4mm | 17.9mm | 17.1mm | 20.2mm | 17.6mm | 18.0mm | 16.6mm | 18.0mm | 17.5mm |
| Heathrow | 23.2mm | 22.5mm | 22.5mm | 21.8mm | 24.2mm | 24.0mm | 20.7mm | 22.2mm | 22.1mm | 20.3mm |
| Hurn | 21.0mm | 20.7mm | 20.7mm | 19.9mm | 22.9mm | 21.9mm | 19.6mm | 20.5mm | 21.1mm | 19.6mm |
| Camborne | 17.9mm | 17.4mm | 17.1mm | 16.5mm | 19.7mm | 18.0mm | 17.0mm | 16.8mm | 17.8mm | 15.9mm |