Cambridge Weather Summary April 2017 Based on 30 days' worth of half-hourly data recorded with rooftop sensors at the Computer Laboratory, Cambridge, U.K. Temperature (degrees C) Average: 8.0 Minimum: -2.4 (27 April 04:00) Maximum: 24.8 (09 April 14:30) Relative Humidity (%) Average: 69.3 Minimum: 11 (19 April 15:30) Maximum: 100 (01 April 01:00) Dew Point (degrees C) Average: 2.2 Minimum: -17.7 (19 April 15:30) Maximum: 13.5 (09 April 13:00) Atmospheric Pressure (mbar) Average: 1021.8 Minimum: 997 (30 April 16:00) Maximum: 1040 (19 April 08:00) Half-hourly Instantaneous Wind Speed (knots) Average: 2.6 Minimum: 0.0 (01 April 20:00) Maximum: 22.0 (30 April 13:30) Half-hourly Maximum Wind Speed (knots) Average: 9.0 Minimum: 0 (01 April 20:00) Maximum: 38 (09 April 16:30) Prevalent Wind Direction W (36.4% of readings) Total Sunshine Hours 313.0 Total Rainfall mm 21.8