| Times indicate the end of a measurement period (BST) | ||||||||
| Maximum Temperature | 16.2 | ēC | 04-Dec-04 | 12:00 PM | Overreads in Bright Sunshine | |||
| Minimum Temperature | -2.8 | ēC | 20-Dec-04 | 6:15 AM | ||||
| Mean (15 min) | 7.2 | ēC | ||||||
| Mean (Max Min) | 7.5 | ēC | (calculated from 0901 to 0900 GMT data) | |||||
| Mean Max | 10.9 | ēC | (calculated from 0901 to 0900 GMT data) | |||||
| Mean Min | 4.3 | ēC | (calculated from 0901 to 0900 GMT data) | |||||
| Lowest Max | 6.8 | ēC | 20-Dec-04 | |||||
| Highest Min | 10.1 | ēC | 15-Dec-04 | |||||
| Air Frosts | 3 | 18.5 | hours of Frost duration | |||||
| Maximum Station Pressure | 1031 | hPa | 04-Dec-04 | 11:30 PM | ||||
| Minimum Station Pressure | 987 | hPa | 17-Dec-04 | 9:30 AM | ||||
| Mean | 1018.7 | hPa | ||||||
| Mean of 09Z values | 1018.2 | hPa | ||||||
| Rainfall | 43.5 | mm | ||||||
| Wettest 24hr | 23.1 | mm | 19-Dec-04 | 7:00 AM | ||||
| Wettest Calendar Day | 23.1 | mm | 18-Dec-04 | (calculated from 0901 to 0900 following day) | ||||
| Rain Days ( > 0.3mm) | 10 | days | (calculated from 0901 to 0900 GMT data) | |||||
| Wet Days (>1.0mm) | 6 | days | (calculated from 0901 to 0900 GMT data) | |||||
| Wet Days (>5.0mm) | 2 | days | (calculated from 0901 to 0900 GMT data) | |||||
| Max 15min accum | 1.5 | mm | 18-Dec-04 | 6:30 PM | ||||
| Rain Duration | 23.25 | hours | ||||||
| Longest Dry period | 8.84 | days | 15-Dec-04 | 10:00 PM | 212.25 | (hours) | ||
| Longest Wet period (>0.3mm / 15 mins) | 3.25 | hours | 18-Dec-04 | 7:30 PM | ||||
| Sunshine Hours (>30klux) | 32.50 | hours | ||||||
| Max Sunshine | 4.25 | hours | 01-Dec-04 | (calculated from 0901 to 0900 following day) | ||||
| Sunshine Hours (>50%) | 44.5 | hours | ||||||
| Max Sunshine | 6.25 | hours | 01-Dec-04 | (calculated from 0901 to 0900 following day) | ||||
| Brightest Calendar Day | 8.9 | klux | 01-Dec-04 | (calculated from 0901 to 0900 following day) | ||||
| Sunless Days | 9 | days | (calculated from 0901 to 0900 GMT data) | |||||
| Maximum Brightness (klux) | 62.6 | klux | 04-Dec-04 | 12:00 PM | ||||
| Average Wind Speed | 3.2 | knots | 3.7 | mph | ||||
| Maximum Wind Speed | 25.43 | knots | 17-Dec-04 | 9:30 AM | 29.3 | mph | ||
| Days with wind from: | (calculated from 0901 to 0900 GMT data) | |||||||
| Calm | 12 | |||||||
| N | 0 | |||||||
| NE | 0 | |||||||
| E | 2 | |||||||
| SE | 2 | |||||||
| S | 1 | |||||||
| SW | 0 | |||||||
| W | 6 | |||||||
| NW | 1 | |||||||
| Average RH (at 09Z) | 79.9 | |||||||