[Christmas Dynasnow]

Rain

Most in one minute: 38 mm (1.5 in); Barot, Guadeloupe, 26 November 1970.
Most in one hour: 305 mm (12.0 in) in 42 minutes. Holt, Missouri, United States, 22 June 1947.
Most in 12 hours (1/2 day): 1,144 mm (45.0 in); Cilaos, Réunion, 8 January 1966, during tropical cyclone Denise.
Most in 24 hours (1 day): 1,825 mm (71.9 in); Cilaos, Réunion, 7–8 January 1966, during tropical cyclone Denise.
Most in 48 hours (2 days): 2,493 mm (98.1 in); Cherrapunji, Meghalaya, India, 15–16 June 1995.
Most in 72 hours (3 days): 3,929 mm (154.7 in); Commerson, Réunion, 24–26 February 2007
Most in 96 hours (4 days): 4,869 mm (191.7 in); Commerson, Réunion, 24–27 February 2007.
Most in one year: 26,470 mm (1,042 in); Cherrapunji, Meghalaya, India, 1860–1861.
Highest average annual total (observed over 10 years): 11,872 mm (467.4 in); Mawsynram, Meghalaya, India.

(an average UK place gets about 900mm a year, for reference)