On 20 September 1961 in London, England, United Kingdom it was wet, raining all day, and the high was 18°C (64°F), the low was 13°C (55°F) and the precipitation was 13.4 mm (0.53 in).
| Time | Temperature | Precipitation |
|---|---|---|
| 00:00 | 18° | 0.1 mm |
| 01:00 | 17° | 0.5 mm |
| 02:00 | 17° | 0.7 mm |
| 03:00 | 17° | 0.6 mm |
| 04:00 | 16° | 0.5 mm |
| 05:00 | 16° | 0.5 mm |
| 06:00 | 15° | 0.4 mm |
| 07:00 | 15° | 0.3 mm |
| 08:00 | 15° | 0.0 mm |
| 09:00 | 15° | 0.2 mm |
| 10:00 | 15° | 0.9 mm |
| 11:00 | 15° | 2.2 mm |
| 12:00 | 15° | 1.0 mm |
| 13:00 | 15° | 1.2 mm |
| 14:00 | 15° | 1.3 mm |
| 15:00 | 15° | 1.2 mm |
| 16:00 | 15° | 0.9 mm |
| 17:00 | 15° | 0.6 mm |
| 18:00 | 15° | 0.3 mm |
| 19:00 | 14° | 0.0 mm |
| 20:00 | 14° | 0.0 mm |
| 21:00 | 13° | 0.0 mm |
| 22:00 | 13° | 0.0 mm |
| 23:00 | 13° | 0.0 mm |