Cambridge Weather Summary September 2016 Based on 30 days' worth of half-hourly data recorded with rooftop sensors at the Computer Laboratory, Cambridge, U.K. Temperature (degrees C) Average: 15.7 Minimum: 5.6 (23 September 05:00) Maximum: 31.1 (13 September 14:00) Relative Humidity (%) Average: 78.6 Minimum: 16 (13 September 14:30) Maximum: 100 (01 September 00:00) Dew Point (degrees C) Average: 11.7 Minimum: -3.4 (11 September 15:30) Maximum: 21.4 (15 September 16:30) Atmospheric Pressure (mbar) Average: 1017.3 Minimum: 1008 (04 September 00:00) Maximum: 1027 (06 September 07:00) Half-hourly Instantaneous Wind Speed (knots) Average: 3.5 Minimum: 0.0 (01 September 00:00) Maximum: 24.0 (29 September 02:00) Half-hourly Maximum Wind Speed (knots) Average: 10.0 Minimum: 0 (06 September 19:00) Maximum: 36 (29 September 08:30) Prevalent Wind Direction SW (25.2% of readings) Total Sunshine Hours 100.6 Total Rainfall mm 32.0