0900Z: 21005KT 50km 3AC120 (2CI250) 8.6/3.0 QFF 1024.4 falling.
SYNOP: 42984 42105 10086 20030 40244 50001 83031 333 83362=
A cold night with a slight air frost and moderate hoar. Fine and sunny at first but patchy altocumulus and cirrus now moving down from the N. Excellent visibility. Surface wind light and variable becoming SSW-SW F2 since 0700Z.
17/0900Z to 18/0900Z:
Max: 10.8 (1257Z)
Min: -1.3 (0520Z)
Grass min: -4.3 (0516Z)
Concrete min: -2.5 (0350Z)
30cm temp 0900Z: 10.0
Rain: 0.2 mm