MONTHLY CLIMATOLOGICAL SUMMARY for MAY. 2003 NAME: Ferryhill CITY: Ferryhill STATE: Co. Durham ELEV: 394 ft LAT: 54° 41' 00" N LONG: 1° 33' 00" 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 ------------------------------------------------------------------------------------ 1 9.9 14.7 16:00 6.4 5:00 5.6 0.0 2.6 0.0 0.0 --- --- 2 8.9 11.1 14:00 7.7 00:00 6.5 0.0 7.4 0.0 0.0 --- --- 3 9.6 13.1 17:00 6.7 7:00 5.9 0.0 2.6 0.0 0.0 --- --- 4 13.8 18.8 17:00 9.7 1:00 2.3 0.6 0.2 0.0 0.0 --- --- 5 11.1 13.6 1:00 8.4 00:00 4.4 0.0 0.2 0.0 0.0 --- --- 6 10.6 14.9 16:00 7.3 5:00 4.9 0.0 0.0 0.0 0.0 --- --- 7 12.4 17.8 18:00 8.2 6:00 3.3 0.3 0.0 0.0 0.0 --- --- 8 11.6 14.4 15:00 8.0 00:00 4.0 0.0 0.0 0.0 0.0 --- --- 9 9.7 14.0 15:00 5.6 00:00 5.8 0.0 0.4 0.0 0.0 --- --- 10 9.6 15.9 17:00 4.4 5:00 5.9 0.0 0.0 0.0 0.0 --- --- 11 9.8 14.9 15:00 5.9 3:00 5.7 0.0 0.2 0.0 0.0 --- --- 12 8.9 13.6 15:00 4.7 5:00 6.6 0.0 0.0 0.0 0.0 --- --- 13 8.8 13.8 16:00 4.2 4:00 6.7 0.0 0.0 0.0 0.0 --- --- 14 9.1 11.9 13:00 7.1 00:00 6.4 0.0 7.2 0.0 0.0 --- --- 15 9.0 13.4 15:00 5.8 4:00 6.5 0.0 0.2 0.0 0.0 --- --- 16 8.9 10.0 21:00 7.2 2:00 6.6 0.0 9.2 0.0 0.0 --- --- 17 11.4 15.6 15:00 9.1 5:00 4.1 0.0 3.4 0.0 0.0 --- --- 18 11.7 16.0 16:00 9.6 5:00 3.8 0.0 3.8 0.0 0.0 --- --- 19 10.7 15.2 15:00 8.1 00:00 4.8 0.0 7.2 0.0 0.0 --- --- 20 11.1 16.4 16:00 7.0 4:00 4.4 0.0 0.2 0.0 0.0 --- --- 21 11.6 15.1 16:00 9.5 00:00 3.9 0.0 2.0 0.0 0.0 --- --- 22 12.6 15.4 14:00 9.6 1:00 2.9 0.0 0.2 0.0 0.0 --- --- 23 11.5 13.6 17:00 9.8 00:00 4.0 0.0 5.4 0.0 0.0 --- --- 24 12.1 16.8 19:00 7.8 6:00 3.5 0.1 0.2 0.0 0.0 --- --- 25 11.8 16.3 13:00 8.3 3:00 3.7 0.0 6.4 0.0 0.0 --- --- 26 12.2 16.8 18:00 6.7 5:00 3.4 0.1 0.0 0.0 0.0 --- --- 27 15.1 18.7 17:00 11.6 6:00 1.3 0.8 0.0 0.0 0.0 --- --- 28 16.7 21.5 18:00 13.4 5:00 0.6 1.8 0.0 0.0 0.0 --- --- 29 17.6 22.1 17:00 13.6 5:00 0.4 2.5 0.0 0.0 0.0 --- --- 30 18.7 23.8 15:00 14.8 6:00 0.1 3.2 0.0 0.0 0.0 --- --- 31 18.7 26.1 18:00 12.1 6:00 0.8 4.0 0.0 0.0 0.0 --- --- ------------------------------------------------------------------------------------- 11.8 26.1 31 4.2 13 129.0 13.4 59.0 0.0 0.0 --- --- (+1.7) (119%) Max >= 32.0: 0 Max <= 0.0: 0 Min <= 0.0: 0 Min <= -18.0: 0 Max Rain: 9.19 ON 16/05/03 Days of Rain: 19 (> .2 mm) 11 (> 2 mm) 0 (> 20 mm) Heat Base: 15.5 Cool Base: 15.5 Method: Integration A changeable month. A warm beginning, cool middle, and hot end, with some heavy rain, particularly in the west. Overall slightly warmer than usual. Severe thunderstorms in the Berkshire area on the 13th, with 1.6 cm hailstones. There were some damaging frosts midmonth: -4.3C at Loch Glascarnoch on the 16th. There was a heatwave at the end of the month, with 29C at St Helier (Jersey) on the 29th, and 29.1C in London on the 31st - the highest May maximum in the London region since 1953. There was a severe thunderstorm around Selkirk in the Borders on the 30th, leading to serious flooding. The England and Wales average rainfall was nearly 20% above normal, although Capel Curig (Snowdonia) saw 262 mm, but parts of the Isle of Wight only 25 mm. A sunny beginning and end of the month cancelled out the dull middle.