On 21 March 1965 in London, England, United Kingdom it was some rain, and the high was 10°C (49°F), the low was 3°C (38°F) and the precipitation was 8.8 mm (0.35 in).
| Time | Temperature | Precipitation |
|---|---|---|
| 00:00 | 8° | 0.0 mm |
| 01:00 | 8° | 0.1 mm |
| 03:00 | 8° | 0.2 mm |
| 04:00 | 8° | 0.3 mm |
| 05:00 | 7° | 0.1 mm |
| 06:00 | 7° | 0.4 mm |
| 07:00 | 7° | 0.4 mm |
| 08:00 | 7° | 0.6 mm |
| 09:00 | 6° | 1.1 mm |
| 10:00 | 7° | 0.9 mm |
| 11:00 | 8° | 0.6 mm |
| 12:00 | 8° | 0.8 mm |
| 13:00 | 8° | 0.2 mm |
| 14:00 | 9° | 0.2 mm |
| 15:00 | 10° | 0.2 mm |
| 16:00 | 7° | 1.2 mm |
| 17:00 | 6° | 0.3 mm |
| 18:00 | 5° | 0.3 mm |
| 19:00 | 5° | 0.5 mm |
| 20:00 | 4° | 0.0 mm |
| 21:00 | 4° | 0.1 mm |
| 22:00 | 4° | 0.1 mm |
| 23:00 | 3° | 0.2 mm |