MONTHLY CLIMATOLOGICAL SUMMARY for Dec 2025 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 9.6 11.2 18:30 5.1 00:00 8.7 0.0 4.4 6.1 29.0 21:29 191 02 8.4 11.2 13:29 6.6 23:59 9.9 0.0 0.8 2.5 14.0 00:52 191 03 5.8 9.0 13:30 3.3 08:03 12.6 0.0 0.2 1.7 11.0 22:06 170 04 6.5 7.7 09:30 3.9 23:54 11.9 0.0 6.8 4.9 18.0 10:46 175 05 4.9 8.8 23:57 1.1 07:29 13.4 0.0 5.2 4.3 26.0 19:58 154 06 9.9 11.7 13:15 8.5 23:54 8.4 0.0 0.4 5.8 24.0 17:48 221 07 10.2 14.1 17:49 7.2 05:45 8.2 0.0 1.8 5.3 35.0 18:00 210 08 11.6 13.3 12:33 9.4 02:47 6.8 0.0 0.0 3.5 19.0 09:56 206 09 12.5 14.3 14:11 10.2 23:30 5.8 0.0 6.6 5.5 25.0 07:56 193 10 10.2 12.4 13:22 8.7 23:54 8.1 0.0 0.0 5.2 24.0 14:04 225 11 9.1 11.7 12:47 7.3 06:32 9.3 0.0 0.0 3.1 17.0 09:14 188 12 9.5 12.1 12:14 6.9 20:46 8.8 0.0 0.0 3.5 19.0 16:18 199 13 6.8 9.3 13:15 4.4 08:56 11.5 0.0 0.0 3.2 15.0 05:07 207 14 8.4 10.2 12:53 6.6 02:10 9.9 0.0 0.0 4.6 30.0 11:06 199 15 10.3 11.7 12:33 9.2 08:43 8.1 0.0 0.0 3.5 18.0 00:01 181 16 8.4 10.7 11:15 4.2 23:30 10.0 0.0 1.8 2.4 13.0 08:20 331 17 5.9 10.2 23:25 1.8 06:05 12.5 0.0 0.0 4.1 24.0 23:13 199 18 10.6 11.6 19:10 9.8 00:00 7.8 0.0 10.4 5.2 31.0 15:21 193 19 7.4 10.4 00:10 5.2 23:46 10.9 0.0 0.0 3.4 24.0 00:16 213 20 5.7 8.3 13:27 3.2 07:00 12.6 0.0 0.2 2.7 16.0 21:55 123 21 9.2 10.2 21:07 7.7 00:05 9.2 0.0 2.0 2.9 13.0 12:26 88 22 8.5 10.0 13:00 6.7 23:56 9.9 0.0 0.0 2.5 16.0 05:31 98 23 6.1 6.8 00:40 5.1 23:50 12.2 0.0 0.0 5.4 24.0 23:50 57 24 4.3 5.6 02:54 2.4 23:41 14.1 0.0 0.0 7.3 26.0 11:07 56 25 2.6 4.7 12:48 1.4 20:08 15.7 0.0 0.0 6.6 27.0 13:07 49 26 2.8 5.6 13:44 0.5 22:10 15.6 0.0 0.0 3.4 15.0 01:10 51 27 3.4 6.4 16:55 -0.6 06:30 15.0 0.0 0.2 3.6 16.0 19:37 47 28 5.8 6.7 11:32 3.9 23:56 12.5 0.0 0.0 3.7 17.0 16:56 47 29 5.3 6.2 17:35 3.8 00:09 13.1 0.0 0.2 3.5 14.0 13:46 33 30 3.3 5.8 12:59 1.6 21:36 15.0 0.0 0.0 1.4 11.0 13:37 5 31 1.6 3.6 13:26 0.2 08:55 16.7 0.0 0.0 5.1 18.0 20:36 262 --------------------------------------------------------------------------------------- 7.2 14.3 09 -0.6 27 343.9 0.0 41.0 4.1 35.0 07 168