MONTHLY CLIMATOLOGICAL SUMMARY for May 2011 NAME: Royston, Hertfordshire ELEV: 78 meters LAT: 52-03.15 N LONG: 000-01.35 W TEMPERATURE (C), RAIN (mm), WIND SPEED (mph) HEAT COOL AVG MEAN DEG DEG WIND DOM DAY TEMP HIGH TIME LOW TIME DAYS DAYS RAIN SPEED HIGH TIME DIR --------------------------------------------------------------------------------------- 01 13.0 18.1 14:30 8.4 03:30 5.4 0.0 0.0 5.3 22.0 18:30 88 02 10.2 14.6 14:00 5.8 00:00 8.1 0.0 0.0 6.1 24.0 17:30 83 03 8.5 14.3 15:30 2.1 06:30 9.8 0.0 0.0 2.7 17.0 10:00 89 04 9.0 15.8 17:00 1.4 06:30 9.3 0.0 0.0 1.9 14.0 18:00 103 05 11.9 18.7 18:00 5.8 02:30 6.4 0.0 0.8 2.4 13.0 08:00 118 06 16.7 24.9 18:00 9.6 05:30 1.6 0.0 0.0 2.3 14.0 01:30 161 07 17.2 23.4 16:00 12.7 06:00 1.1 0.0 4.0 1.7 14.0 14:30 123 08 16.7 19.9 16:30 13.4 23:00 1.7 0.0 1.8 2.3 22.0 16:30 220 09 15.4 20.8 15:30 9.8 06:30 3.0 0.0 0.0 2.0 17.0 17:00 220 10 14.8 20.4 17:00 8.5 06:30 3.6 0.0 0.0 2.4 16.0 17:30 245 11 13.3 16.8 18:30 10.3 06:00 5.0 0.0 0.0 2.8 13.0 10:30 255 12 12.6 16.7 16:00 7.6 05:30 5.8 0.0 0.0 5.3 21.0 15:30 268 13 13.0 17.3 14:00 8.2 06:30 5.3 0.0 0.0 3.8 17.0 21:30 267 14 10.9 14.8 16:00 5.9 06:00 7.4 0.0 0.0 5.6 24.0 17:30 286 15 10.7 13.7 19:30 6.6 06:00 7.7 0.0 0.0 4.9 22.0 13:30 279 16 13.9 19.0 18:30 10.9 05:30 4.4 0.0 0.2 6.0 19.0 15:30 265 17 14.1 17.4 14:00 10.9 05:30 4.2 0.0 0.0 4.7 17.0 02:00 266 18 14.3 18.4 15:00 11.6 00:00 4.0 0.0 0.0 3.9 19.0 01:00 263 19 13.1 18.4 18:30 7.6 06:30 5.2 0.0 0.0 1.8 9.0 06:30 279 20 13.8 18.1 19:00 9.7 07:00 4.5 0.0 0.0 3.8 18.0 11:30 266 21 15.5 22.0 17:00 8.7 06:30 2.9 0.0 0.0 2.9 17.0 12:30 237 22 13.6 17.1 16:00 10.0 07:00 4.7 0.0 0.6 6.7 29.0 13:00 259 23 13.1 18.8 14:30 9.8 04:30 5.2 0.0 0.0 5.4 29.0 14:00 248 24 12.6 17.9 18:30 7.7 06:00 5.8 0.0 0.0 6.6 22.0 05:00 270 25 14.5 21.0 15:30 6.1 06:00 3.9 0.0 0.0 2.4 14.0 13:00 225 26 12.0 14.7 17:30 9.8 00:00 6.3 0.0 5.2 5.1 23.0 20:30 266 27 11.7 15.3 18:30 9.2 05:00 6.7 0.0 0.0 4.6 18.0 14:30 281 28 12.1 16.9 18:30 9.2 03:00 6.2 0.0 0.0 4.8 24.0 19:00 257 29 15.6 18.9 19:00 12.3 05:30 2.7 0.0 0.0 5.6 23.0 19:00 263 30 13.7 19.7 13:30 10.3 00:00 4.6 0.0 6.2 2.5 17.0 12:00 254 31 11.4 16.4 17:30 6.7 06:00 6.9 0.0 2.4 3.2 16.0 13:30 288 --------------------------------------------------------------------------------------- 13.2 24.9 06 1.4 04 159.5 0.0 21.2 3.9 29.0 22 259