Daily Report for 17th January 2017
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| Measure | Value (anomaly) | Time | Month cumul. | Record High | Record Low |
| Minimum Temperature | -1.4 °C (-3.8) | 23:55 | 2.2 °C (-0.3) | 6.6 °C (+4.2), 2014 | -5.5 °C (-7.9), 2013 |
| Maximum Temperature | 4.6 °C (-2.4) | 13:55 | 7.6 °C (+0.5) | 9.8 °C (+2.8), 2011 | 2.3 °C (-4.7), 2013 |
| Mean Temperature | 2.3 °C (-3.1) | 5.0 °C (+0.1) | 7.6 °C, 2011 | -1.1 °C, 2013 | |
| Minimum Humidity | 49% | 15:00 | 69% | 85%, 2011 | 49%, 2009 |
| Maximum Humidity | 84% | 09:40 | 83% | 98%, 2010 | 84%, 2017 |
| Mean Humidity | 71% | 77% | 93%, 2011 | 68%, 2009 | |
| Minimum Pressure | 1033 hPa | 00:02 | 1018 hPa | 1033 hPa, 2017 | 987 hPa, 2014 |
| Maximum Pressure | 1038 hPa | 20:57 | 1026 hPa | 1038 hPa, 2017 | 993 hPa, 2014 |
| Mean Pressure | 1036 hPa | 1022 hPa | 1036 hPa, 2017 | 990 hPa, 2014 | |
| Mean Wind Speed | 0.5 mph (-4.7) | 4.1 mph (-1.1) | 10.1 mph, 2018 | 0.5 mph, 2017 | |
| Maximum Wind Speed | 5.8 mph | 11:29 | 11.6 mph | 20.4 mph, 2018 | 5.8 mph, 2017 |
| Maximum Gust | 8.4 mph | 11:29 | 17.0 mph | 34.6 mph, 2018 | 8.4 mph, 2017 |
| Mean Wind Direction | SSE | ||||
| Rainfall | 0.0 mm | 48.0 mm (159%) | 16.1 mm, 2011 | ||
| Maximum Hourly Rain | n/a | 5, 2009 | |||
| Maximum 10-min Rain | n/a | 1.1, 2011 | |||
| Maximum Rain Rate | n/a | 15, 2011 | |||
| Minimum Dew Point | -6.1 °C | 19:08 | -1.6 °C | 5.3 °C, 2014 | -6.7 °C, 2013 |
| Maximum Dew Point | 1.3 °C | 00:11 | 4.1 °C | 8.9 °C, 2011 | -0.5 °C, 2013 |
| Mean Dew Point | -2.7 °C | 1.3 °C | 6.5 °C, 2011 | -3.1 °C, 2013 | |
| Measure | Value | Time | Month cumul. | Record High | Record Low |
| Night Minimum (21-09) | * 1.0 °C * | 08:46 | 3.3 °C | 8.6 °C, 2011 | -5.5 °C, 2013 |
| Day Maximum (09-21) | 4.6 °C | 13:55 | 7.4 °C | 9.0 °C, 2009 | 2.3 °C, 2013 |
| Max 10m Temp Rise | 0.4 °C | 09:52 | 0.3 °C | 0.6 °C, 2010 | 0.1 °C, 2011 |
| Max 1hr Temp Rise | 1.4 °C | 10:23 | 1.2 °C | 2.4 °C, 2013 | 0.4 °C, 2011 |
| Max 1hr Hum Rise | 6% | 19:26 | 4% | 7%, 2018 | 2%, 2016 |
| Max 10m Temp Fall | 0.5 °C | 18:24 | 0.5 °C | 0.9 °C, 2019 | 0.1 °C, 2016 |
| Max 1hr Temp Fall | 2.0 °C | 19:01 | 1.4 °C | 2.0 °C, 2017 | 0.3 °C, 2016 |
| Max 1hr Hum Fall | 13% | 11:27 | 6% | 13%, 2017 | 3%, 2016 |
| Max 10m Wind Speed | 4.4 mph | 13:17 | 8.9 mph | 16.4 mph, 2018 | 4.4 mph, 2017 |
| Minimum Feels-like | -3.2 °C | 23:57 | -1.6 °C | 2.8 °C, 2011 | -5.5 °C, 2013 |
| Maximum Feels-like | 4.6 °C | 13:35 | 7.2 °C | 10.6 °C, 2011 | 2.3 °C, 2013 |
| Mean Feels-like | 1.9 °C | 3.0 °C | 6.7 °C, 2011 | -1.9 °C, 2013 | |
| Air-frost Hrs | 3 hrs | 1 hrs | 12 hrs, 2013 | 0 hrs, 2010 | |
| Measure | Value (anomaly) | Month cumul. | Record High | Record Low | |
| Temperature Range | 6.0 °C (+1.4) | 5.4 °C (+0.8) | 8.5 °C (+3.9), 2012 | 1.9 °C (-2.7), 2014 | |
| Humidity Range | 35% | 15% | 39%, 2009 | 12%, 2011 | |
| Pressure Range | 5 hPa | 8 hPa | 19 hPa, 2010 | 2 hPa, 2012 | |
| Measure | Value [% of max] | Month cumul. | Record High | Record Low | |
| Sun Hours | 7 [93%] | 28 hrs (114%) [23%] | 7 [93%], 2017 | 0.1 [1%], 2011 | |
| Wet Hours | 0 | 64 hrs (173%) [16%] | 8, 2011 | , 2009 | |
| Cloud Cover | Sunny with periods of Mostly Sunny | ||||
| Events | None | ||||
| Comments | - | ||||
| Extra Comments | mysterious false tips removed | ||||
| Issues | None known | ||||
| Observer Absent? | Yes - observations may be unreliable | ||||
- 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