Daily Report for 10th December 2017
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| Measure | Value (anomaly) | Time | Month cumul. | Record High | Record Low |
| Minimum Temperature | 0.2 °C (-3.2) | 08:58 | 3.4 °C (-0.1) | 9.5 °C (+6.1), 2015 | 0.2 °C (-3.2), 2017 |
| Maximum Temperature | 2.6 °C (-5.7) | 03:24 | 7.2 °C (-1.4) | 13.7 °C (+5.4), 2016 | 2.6 °C (-5.7), 2017 |
| Mean Temperature | 0.9 °C (-4.4) | 5.4 °C (-0.7) | 12.0 °C, 2016 | 0.9 °C, 2017 | |
| Minimum Humidity | 74% | 02:41 | 75% | 83%, 2013 | 53%, 2014 |
| Maximum Humidity | 96% | 22:26 | 90% | 98%, 2013 | 79%, 2016 |
| Mean Humidity | 92% | 84% | 92%, 2017 | 71%, 2014 | |
| Minimum Pressure | 972 hPa | 12:24 | 1014 hPa | 1030 hPa, 2013 | 972 hPa, 2017 |
| Maximum Pressure | 1004 hPa | 00:00 | 1025 hPa | 1033 hPa, 2009 | 1004 hPa, 2017 |
| Mean Pressure | 982 hPa | 1019 hPa | 1031 hPa, 2013 | 982 hPa, 2017 | |
| Mean Wind Speed | 3.4 mph (-1.7) | 5.2 mph (+0.2) | 9.2 mph, 2015 | 2.6 mph, 2013 | |
| Maximum Wind Speed | 12.6 mph | 03:27 | 12.8 mph | 23.0 mph, 2014 | 8.7 mph, 2011 |
| Maximum Gust | 17.3 mph | 06:44 | 20.6 mph | 33.7 mph, 2014 | 12.8 mph, 2011 |
| Mean Wind Direction | NE | ||||
| Rainfall / Snow-melt approx. | 18.6 mm | 22.1 mm (122%) | 18.6 mm, 2017 | ||
| Maximum Hourly Rain | 4.6 mm | 06:55 | 4.6 mm, 2017 | ||
| Maximum 10-min Rain | 1.0 mm | 06:41 | 1.0 mm, 2017 | ||
| Maximum Rain Rate | 12 mm/h | 06:34 | 30 mm/h, 2014 | ||
| Minimum Dew Point | -2.2 °C | 02:11 | 0.8 °C | 6.0 °C, 2015 | -2.5 °C, 2011 |
| Maximum Dew Point | 1.4 °C | 06:11 | 4.9 °C | 10.4 °C, 2014 | 0.6 °C, 2011 |
| Mean Dew Point | -0.2 °C | 2.8 °C | 8.3 °C, 2016 | -1.0 °C, 2011 | |
| Measure | Value | Time | Month cumul. | Record High | Record Low |
| Night Minimum (21-09) | 0.2 °C | 08:49 | 4.0 °C | 11.2 °C, 2016 | 0.2 °C, 2017 |
| Day Maximum (09-21) | * 1.0 °C * | 18:29 | 7.0 °C | 13.7 °C, 2016 | 1.0 °C, 2017 |
| Max 10m Temp Rise | 0.7 °C | 02:28 | 0.3 °C | 0.7 °C, 2017 | 0.2 °C, 2012 |
| Max 1hr Temp Rise | 1.8 °C | 02:42 | 1.1 °C | 2.3 °C, 2013 | 0.4 °C, 2016 |
| Max 1hr Hum Rise | 11% | 04:12 | 6% | 11%, 2017 | 2%, 2016 |
| Max 10m Temp Fall | 0.4 °C | 08:12 | 0.4 °C | 0.7 °C, 2013 | 0.2 °C, 2010 |
| Max 1hr Temp Fall | 1.4 °C | 08:19 | 1.1 °C | 2.5 °C, 2016 | 0.5 °C, 2018 |
| Max 1hr Hum Fall | 12% | 02:37 | 6% | 24%, 2014 | 3%, 2012 |
| Max 10m Wind Speed | 9.1 mph | 07:29 | 9.8 mph | 17.6 mph, 2014 | 6.8 mph, 2011 |
| Minimum Feels-like | -4.8 °C | 08:46 | -1.2 °C | 6.6 °C, 2015 | -4.8 °C, 2017 |
| Maximum Feels-like | 2.3 °C | 02:37 | 6.9 °C | 14.8 °C, 2016 | 2.3 °C, 2017 |
| Mean Feels-like | -1.5 °C | 2.9 °C | 12.4 °C, 2016 | -1.5 °C, 2017 | |
| Air-frost Hrs | 0 hrs | 0.7 hrs | 0 hrs, 2009 | 0 hrs, 2009 | |
| Measure | Value (anomaly) | Month cumul. | Record High | Record Low | |
| Temperature Range | 2.4 °C (-2.5) | 3.8 °C (-1.3) | 7.9 °C (+3.0), 2013 | 2.4 °C (-2.5), 2017 | |
| Humidity Range | 22% | 16% | 39%, 2014 | 4%, 2016 | |
| Pressure Range | 32 hPa | 11 hPa | 32 hPa, 2017 | 1 hPa, 2013 | |
| Measure | Value [% of max] | Month cumul. | Record High | Record Low | |
| Sun Hours | 0 [0%] | 16 hrs (102%) [22%] | 6.5 [92%], 2011 | 0 [0%], 2010 | |
| Wet Hours | 12 [Mean rain rate: 1.6 mm/h] | 16 hrs (82%) [6.8%] | 12, 2017 | 0, 2010 | |
| Cloud Cover | Overcast | ||||
| Events | Snowfall: ~6 cm Lying Snow (at 09z): ~4 cm | ||||
| Comments | 03-08 Rain -> 08-15 Snow, mostly settling | ||||
| 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
Large resolution version