Cambridge Weather Summary December 2019 Based on 31 days' worth of half-hourly data recorded with rooftop sensors at the Computer Laboratory, Cambridge, U.K. Temperature (degrees C) Average: 4.5 Minimum: -3.2 (02 December 07:30) Maximum: 10.9 (06 December 10:00) Relative Humidity (%) Average: 86.9 Minimum: 33 (09 December 12:00) Maximum: 100 (01 December 00:00) Dew Point (degrees C) Average: 2.5 Minimum: -8.7 (09 December 11:30) Maximum: 10.9 (06 December 10:30) Atmospheric Pressure (mbar) Average: 1006.9 Minimum: 966 (13 December 01:00) Maximum: 1039 (28 December 08:30) Half-hourly Instantaneous Wind Speed (knots) Average: 5.4 Minimum: 0.0 (02 December 06:00) Maximum: 30.0 (07 December 23:00) Half-hourly Maximum Wind Speed (knots) Average: 13.3 Minimum: 0 (03 December 19:30) Maximum: 42 (10 December 17:30) Prevalent Wind Direction SW (34.8% of readings) Total Sunshine Hours 74.4 Total Rainfall mm 48.8