MONTHLY CLIMATOLOGICAL SUMMARY for Sep 2026 NAME: Royston, Hertfordshire ELEV: 80 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 17.5 23.0 15:25 12.4 06:45 0.9 0.0 0.0 4.5 18.0 12:09 252 02 17.8 21.3 16:27 15.3 03:21 0.6 0.0 0.0 3.7 19.0 16:37 227 03 21.0 25.5 17:22 18.0 06:05 0.0 2.6 0.0 7.6 25.0 15:32 248 04 18.2 20.2 06:29 14.6 23:54 0.1 0.0 3.8 7.6 28.0 08:40 254 05 16.9 22.7 16:50 12.6 06:51 1.4 0.0 0.0 4.8 18.0 09:05 260 06 20.0 28.7 16:17 14.1 07:08 0.0 1.6 0.0 2.2 14.0 12:24 188 07 19.7 24.5 14:48 16.7 03:28 0.0 1.3 0.0 5.1 21.0 14:54 246 08 14.8 16.9 00:00 13.0 23:35 3.6 0.0 13.6 4.2 19.0 17:52 253 09 14.8 18.3 15:54 11.3 07:05 3.5 0.0 0.0 4.7 17.0 10:58 271 10 16.4 20.9 15:50 12.3 06:27 2.0 0.0 0.4 2.9 18.0 14:44 223 11 17.5 21.3 15:17 14.8 06:39 0.8 0.0 0.0 3.1 17.0 00:01 264 12 17.8 23.5 16:33 12.2 06:29 0.5 0.0 1.0 4.3 20.0 15:55 240 13 18.9 20.6 16:52 17.4 06:11 0.0 0.6 17.2 2.9 16.0 00:59 249 14 20.3 25.1 17:24 16.7 06:24 0.0 1.9 0.2 2.4 14.0 14:10 237 15 18.5 22.6 15:22 14.3 23:59 0.0 0.2 0.0 5.1 21.0 14:17 256 16 15.3 19.8 15:33 12.0 07:06 3.0 0.0 0.0 5.4 17.0 10:36 262 17 15.5 19.7 14:51 12.9 23:59 2.8 0.0 0.8 6.0 23.0 13:06 251 18 15.2 19.7 14:25 10.9 05:22 3.1 0.0 0.0 5.9 24.0 14:49 242 19 18.7 22.2 13:59 16.1 00:31 0.0 0.3 0.0 6.8 24.0 16:06 242 20 16.2 19.9 16:32 12.3 00:00 2.1 0.0 0.0 5.1 20.0 13:11 271 21 16.1 23.9 16:00 10.3 04:39 2.3 0.0 0.0 1.3 9.0 10:43 271 22 23 24 25 26 27 28 29 30 --------------------------------------------------------------------------------------- 17.5 28.7 06 10.3 21 26.6 8.6 37.0 4.6 28.0 04 250