Cambridge Weather Summary September 1998 Based on 18 days worth of half-hourly data recorded with rooftop sensors at AT&T Laboratories, Cambridge, U.K. Temperature (degrees C) Average: 15.7 Minimum: 8 (29 September 07:00) Maximum: 24.3 (07 September 15:30) Relative Humidity (%) Average: 90.2 Minimum: 39 (24 September 16:00) Maximum: 100 (01 September 00:30) Dew Point (degrees C) Average: 14.0 Minimum: 6.4 (24 September 16:00) Maximum: 24.3 (07 September 16:00) Atmospheric Pressure (mbar) Average: 1004.2 Minimum: 993 (09 September 12:30) Maximum: 1016 (24 September 12:30) Half-hourly Instantaneous Wind Speed (knots) Average: 2.6 Minimum: 0 (01 September 08:00) Maximum: 11.4 (09 September 11:30) Half-hourly Maximum Wind Speed (knots) Average: 9.4 Minimum: 0 (01 September 22:00) Maximum: 34 (09 September 11:30) Prevalent Wind Direction S (33.5% of readings) Total Sunshine Hours 36.4 Total Rainfall mm 84.8