PITSFORD HALL WEATHER STATION, NORTHAMPTON, UNITED KINGDOM CLIMATOLOGICAL RECORD FOR MARCH 2000 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th 30th 31st Temperatures Air Max (C) 7.9 10.3 9.3 6.5 9.4 12.5 12.6 15.2 14.6 12 12.1 13 14.4 10.4 11.1 10.2 10 11.1 13.5 14.7 14 12.5 11.2 12.7 10 12.4 8.5 6 6.1 9.8 10.2 Air Min (C) 2.1 0.8 3.6 -1.5 0.6 1.8 1.7 8.8 11.3 9 8.2 2.2 6 8.1 1.6 4.1 7 5.3 0.2 2.6 5.2 0.4 3.8 5.6 2.5 -0.5 -0.3 3.2 1.9 3.1 -0.9 Dry Bulb (C) 4.4 4.1 5.1 2 2 7.1 9.1 11.7 12.3 10.5 9.4 7.4 8.3 9.8 4.4 7.5 8.1 7.8 4.9 5.4 8.8 5.7 7.4 6.9 5.7 0.9 5.6 4 4.9 4 0.2 Wet Bulb (C) 3.4 3.4 3.9 0.7 1.5 6.5 8.1 10.6 10.4 9.8 6.6 5.9 8 8.4 3.3 6.9 6.6 5.1 3.6 5.1 7.5 3.4 5.6 6.3 5 0.6 4.8 3.2 4.2 3.3 0 RH (%) 84 83 81 91 73 91 87 87 76 91 94 79 96 82 82 91 79 63 79 95 82 65 74 91 92 90 88 87 89 88 96 Rainfall Total (mm) 0.6 3.6 _ _ _ _ _ _ tr _ _ _ _ 0.1 _ _ _ _ _ _ _ _ 1.3 4.8 0.6 tr 1.5 0.3 _ _ _ Duration (hrs) 0.3 3.5 _ _ _ _ _ _ _ _ _ _ _ 0.1 _ _ _ _ _ _ _ _ 3.8 3.5 0.5 0.1 4 0.6 _ _ _ Acidity (pH) 5.5 6.3 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6.67 6.4 6.4 _ 6.6 _ _ _ _ Winds (mph) Direction ne sw se ne ne sw sw var var nw n n n n nw n nw ne ne ne se s se sw ne ne ne ne e ne e Speed (0830) 2 7 1 7 4 10 10 16 14 7 20 5 4 10 7 7 6 7 2 3 2 1 8 9 11 1 7 9 12 5 2 Speed (24 hrs) 9 5 10 7 8 7 10 10 10 10 7 5 7 12 8 7 7 4 3 1 3 3 4 7 5 5 9 10 10 4 4 Max Gust 43 39 39 31 23 22 36 39 36 48 43 31 26 53 27 22 31 26 13 10 14 20 22 22 22 26 46 39 39 29 13 Pressure (mb) At 0830hrs 1005 1017 1004 1023 1029 1023 1020 1018 1022 1026 1020 1025 1025 1022 1033 1034 1034 1037 1037 1031 1023 1017 1013 1006 1009 1008 1014 1020 1018 1018 1011 From 0600hrs 4 -2 4 3 0 0 -0.5 0.8 2.1 0 1.2 0.5 1 0 1.6 0.8 0.1 1 0.5 0 -0.2 0.1 0 1 0.2 0 1.5 0.5 0 0 -0.5 Insolation Cloud types ac ac clear ci cs sc cu sc as sc cu,sc cu,cc cc ac cc ac c sc clear sc ac ac,ci ac,ci sc ac obs ac ns ns ns cs Cloud cover 3 8 0 1 3 8 6 8 5 8 4 3 7 7 1 7 8 6 0 8 4 6 6 8 1 9 8 7 8 8 6 Sunshine (hrs) 5.9 0 8.6 7.7 5.4 2.2 2.3 0.7 5.6 0.5 8.6 7.4 1.9 3.8 7.9 0 0 7.6 8.5 1.6 6.8 4.6 0.5 2 4.8 5.3 4.2 0.2 0 0.2 4.6 Visibility 7 5 7 7 6 5 6 7 8 6 7 7 6 7 6 5 7 7 7 5 5 3 5 5 7 3 7 7 5 5 6 Other Ppt Snow/sleet falling _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Depth of snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Hail (<5mm) 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1 _ _ 3 _ _ _ _ Hail (>/=5mm) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Other Obs Thunder heard _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Lightning seen _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Ground Obs Grass Min (C) -1.5 -4.7 0.1 -3 -4.8 -1.4 4.8 7 7.5 6 3.9 -2.9 0.7 3.2 -3.4 -0.8 6 3.9 -4.6 -1.2 4.1 -3.1 -0.2 3.9 -1.5 -4 -1.5 2.4 -1.1 2 -4.7 Concrete Min (C) 1 -1.5 3.2 -3.5 -2 0 5.6 8 8.8 7.6 5.7 -0.6 3 4.9 -1.5 1.7 6.8 5 -2.6 0.8 6 -0.5 1.9 4.5 0 -2.3 0.5 3.1 1.2 3.1 -3 Bare Earth (C) 3.1 4.6 5.1 0.5 0.6 6.9 8.6 11.1 11.4 10.2 10.1 7.6 8.8 9.4 2.6 8.1 7.6 9.7 6 6.1 10.1 4.8 8.1 7.8 3.7 1 5.1 4.6 4 4.9 3.1 Soil Temps 5cm 1.8 2.1 3.8 0.5 1 4.5 6.4 8.4 8.9 8.8 7.4 4 6.8 7.2 2.8 5.4 6.7 6.7 2.9 4.9 7.2 4.2 5.8 6.9 3.8 2.2 4.9 4.4 4.5 4.4 2.3 10cm 3.2 3.4 5.1 2.7 2.5 4.9 6.7 8.3 9.2 9.2 8.1 5.7 7.6 8.1 5.1 6.6 7.6 7.5 4.9 6 7.6 5.9 6.9 7.6 5.5 4 6.1 5.7 5.5 5.5 4.4 20cm 4.4 4.4 5.5 4 3.5 5.1 6.7 8.1 9.2 9.4 8.6 6.9 8 8.6 6.4 7.1 7.9 7.9 6.2 6.8 7.8 7.4 7.4 8.1 6.5 5.5 6.8 6.6 6.1 5.8 5.4 30cm 4.9 5 5.8 4.7 4.2 5.2 6.6 7.9 9 9.3 8.9 7.8 8.4 8.7 7.4 7.6 8.1 8.1 7.1 7.6 7.8 8.3 8.1 8.4 7.5 6.5 7.6 7.1 6.6 6.3 6.1 40cm 5.2 5.5 5.9 5.5 5 5.4 6.2 7.2 8.2 8.6 8.6 8.2 8.4 8.6 7.9 7.9 8.2 8 7.7 7.8 8 8.4 8.4 8.4 8 7.5 7.8 7.5 6.9 6.6 6.9 50cm 5.6 6 6 5.6 5.5 5.6 6.2 7 8 8.5 8.7 8.5 8.6 8.9 8.4 8.2 8.6 8.4 8.1 8.5 8.2 8.9 9 8.9 8.4 8 8.1 7.8 7.5 6.9 7.1 100cm 6.1 6.4 6.2 6 6 6.3 6.3 6.5 6.7 7 7.4 7.5 7.6 7.7 7.7 7.8 8 7.9 7.7 8.6 8.5 8.1 8.1 8.5 8 8 7.9 7.9 7.8 7.4 7.4 Slab 2 2 2 3 1 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 Ground Without snow 2 2 2 4 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 0 5 With snow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _