Casement 1981–2010 averages
TEMPERATURE (degrees Celsius)JanFebMarAprMayJunJulAugSepOctNovDecYear
mean daily max8.
mean daily min2.
mean temperature5.
absolute max.15.215.917.322.724.927.631.029.525.421.317.714.831.0
min. maximum-3.0-
max. minimum11.313.011.512.613.817.218.118.317.816.413.812.718.3
absolute min. -12.4-8.0-9.0-5.5-
mean num. of days with air frost
mean num. of days with ground frost
mean 5cm soil3.
mean 10cm soil3.
mean 20cm soil4.
mean at 0900UTC87.286.784.580.177.477.779.782.284.586.388.988.483.6
mean at 1500UTC 82.276.771.867.767.367.968.969.071.876.681.684.173.8
SUNSHINE (hours)
mean daily duration
greatest daily duration
mean no. of days with no sun
mean monthly total 63.848.550.751.959.162.554.272.360.381.673.775.7754.2
greatest daily total
mean num. of days with >= 0.2mm 171416141514151614161616183
mean num. of days with >= 1.0mm 121011101110101110121112130
mean num. of days with >= 5.0mm 43333334444543
WIND (knots)
mean monthly speed 13.612.912.
max. gust 80787159635158555965668282
max. mean 10-minute speed 57544743433639363844465757
mean num. of days with gales
WEATHER (mean no. of days with..)
snow or sleet
snow lying at 0900UTC1.