Daily Report for 9th December 2018
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| Measure | Value (anomaly) | Time | Month cumul. | Record High | Record Low |
| Minimum Temperature | 6.1 °C (+2.7) | 23:58 | 6.9 °C (+3.3) | 11.2 °C (+7.8), 2016 | -2.1 °C (-5.5), 2010 |
| Maximum Temperature | 10.1 °C (+1.7) | 13:48 | 12.1 °C (+3.5) | 13.8 °C (+5.4), 2016 | 3.2 °C (-5.2), 2017 |
| Mean Temperature | 8.9 °C (+2.2) | 10.0 °C (+3.4) | 12.5 °C, 2016 | 1.1 °C, 2017 | |
| Minimum Humidity | 73% | 15:04 | 80% | 95%, 2009 | 58%, 2011 |
| Maximum Humidity | 90% | 09:48 | 93% | 98%, 2009 | 77%, 2011 |
| Mean Humidity | 80% | 87% | 97%, 2009 | 68%, 2011 | |
| Minimum Pressure | 999 hPa | 00:26 | 1002 hPa | 1029 hPa, 2015 | 999 hPa, 2018 |
| Maximum Pressure | 1023 hPa | 23:45 | 1014 hPa | 1034 hPa, 2015 | 1014 hPa, 2011 |
| Mean Pressure | 1010 hPa | 1008 hPa | 1032 hPa, 2015 | 1010 hPa, 2018 | |
| Mean Wind Speed | 7.6 mph (+2.5) | 6.7 mph (+1.6) | 7.6 mph, 2018 | 3.5 mph, 2009 | |
| Maximum Wind Speed | 19.9 mph | 06:08 | 16.0 mph | 19.9 mph, 2018 | 9.7 mph, 2009 |
| Maximum Gust | 34.6 mph | 03:20 | 27.0 mph | 34.6 mph, 2018 | 12.8 mph, 2009 |
| Mean Wind Direction | WNW | ||||
| Rainfall | 1.0 mm | 21.0 mm (129%) | 1.0 mm, 2018 | ||
| Maximum Hourly Rain | 1.0 mm | 09:17 | 1.0 mm, 2018 | ||
| Maximum 10-min Rain | 0.8 mm | 09:17 | 0.8 mm, 2018 | ||
| Maximum Rain Rate | 12 mm/h | 09:15 | 12 mm/h, 2018 | ||
| Minimum Dew Point | 4.0 °C | 23:39 | 4.9 °C | 8.9 °C, 2009 | -6.5 °C, 2010 |
| Maximum Dew Point | 7.3 °C | 09:13 | 10.2 °C | 10.9 °C, 2009 | -0.4 °C, 2017 |
| Mean Dew Point | 5.7 °C | 7.9 °C | 10.2 °C, 2009 | -2.7 °C, 2010 | |
| Measure | Value | Time | Month cumul. | Record High | Record Low |
| Night Minimum (21-09) | * 8.9 °C * | 02:19 | 8.4 °C | 12.7 °C, 2016 | -2.1 °C, 2010 |
| Day Maximum (09-21) | 10.1 °C | 13:48 | 12.0 °C | 13.5 °C, 2016 | 3.2 °C, 2017 |
| Max 10m Temp Rise | 0.2 °C | 04:48 | 0.4 °C | 0.4 °C, 2013 | 0.1 °C, 2016 |
| Max 1hr Temp Rise | 0.7 °C | 05:25 | 1.1 °C | 2.0 °C, 2015 | 0.3 °C, 2016 |
| Max 1hr Hum Rise | 8% | 09:32 | 5% | 8%, 2014 | 1%, 2009 |
| Max 10m Temp Fall | 0.4 °C | 09:19 | 0.4 °C | 0.4 °C, 2014 | 0.2 °C, 2010 |
| Max 1hr Temp Fall | 1.1 °C | 09:27 | 1.1 °C | 1.2 °C, 2014 | 0.4 °C, 2016 |
| Max 1hr Hum Fall | 9% | 12:12 | 6% | 9%, 2018 | 1%, 2016 |
| Max 10m Wind Speed | 15.2 mph | 02:08 | 12.0 mph | 15.2 mph, 2018 | 6.2 mph, 2009 |
| Minimum Feels-like | 2.8 °C | 23:45 | 4.3 °C | 11.5 °C, 2016 | -7.4 °C, 2010 |
| Maximum Feels-like | 10.1 °C | 13:48 | 13.5 °C | 14.7 °C, 2016 | 3.1 °C, 2017 |
| Mean Feels-like | 6.3 °C | 9.7 °C | 13.8 °C, 2016 | -2.6 °C, 2017 | |
| Air-frost Hrs | 0 hrs | 0 hrs | 9 hrs, 2010 | 0 hrs, 2009 | |
| Measure | Value (anomaly) | Month cumul. | Record High | Record Low | |
| Temperature Range | 4.0 °C (-0.9) | 5.2 °C (+0.1) | 11.2 °C (+6.3), 2014 | 2.3 °C (-2.6), 2009 | |
| Humidity Range | 17% | 13% | 26%, 2012 | 3%, 2009 | |
| Pressure Range | 24 hPa | 12 hPa | 24 hPa, 2018 | 3 hPa, 2013 | |
| Measure | Value [% of max] | Month cumul. | Record High | Record Low | |
| Sun Hours | 2.4 [34%] | 13 hrs (89%) [19%] | 6 [84%], 2011 | 1 [14%], 2009 | |
| Wet Hours | 0.5 [Mean rain rate: 2.0 mm/h] | 29 hrs (158%) [13%] | 2, 2014 | 0, 2010 | |
| Cloud Cover | Partly Cloudy | ||||
| Events | None | ||||
| Comments | 0930 Shower | ||||
| Extra Comments | |||||
| Issues | None known | ||||
| Observer Absent? | Yes - observations may be unreliable | ||||
| Pond Temperature (Heath) | 0.0 °C | ||||
- Notes
- Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
Cumulative anomalies are reported according to the expected value for the month-to-date rather than month-end.
Sun hrs, Wet hrs, Cloud cover and Events are based on manual equipment/observations (entered with a delay of 1-10 days); their reliablity is questionable and they are provided for interest only.
Daily Graph of Conditions
Webcam Summary of Cloud Conditions
Full resolution individual images at up-to 5 minute intervals