Monthly Weather Reports
Report for December 2009
Temperature |
| Measure | Value (anomaly) | Day |
| Lowest Temperature | -3.9 °C. | 23rd |
| Highest Temperature | 12.3 °C. | 6th |
| Mean Temperature | 3.8 °C (-1.7) | . |
| Mean Minimum | 1.6 °C (-1.6) | . |
| Mean Maximum | 5.9 °C (-1.9) | . |
| Highest Minimum | 9.3 °C. | 9th |
| Lowest Maximum | 0.6 °C. | 18th |
| Coldest Day | -1.7 °C. | 19th |
| Warmest Day | 10.6 °C. | 9th |
Rainfall* |
| Measure | Value (anomaly) | Day |
| Total Rain | 75.8 mm (0%) | . |
| Wettest Day | 6.3 mm. | 30th |
| Rain Days | 22. | . |
| Rain Days >1.0 mm | 17 (+6) | . |
| Mean Rain-day rain | 3.4 mm. | . |
Wind Speed |
| Measure | Value (anomaly) | Day |
| Mean Wind speed | 4.7 mph (-0.4) | . |
| Maximum Gust | 33.4 mph. | 17th |
| Maximum Speed | 22.9 mph. | 17th |
| Calmest Day | 1.5 mph. | 14th |
| Windiest Day | 9.0 mph. | 17th |
| Windy Days (>25 mph gusts) | 5. | . |
| Mean Direction | 230° (SW). | . |
Relative Humidity |
| Measure | Value | Day |
| Lowest RH | 66%. | 6th |
| Highest RH | 98%. | 2nd |
| Mean RH | 92%. | . |
| Mean Minimum | 84%. | . |
| Mean Maximum | 97%. | . |
| Highest Minimum | 98%. | 23rd |
| Lowest Maximum | 90%. | 19th |
| Lowest Mean | 81%. | 27th |
| Highest Mean | 98%. | 11th |
Dew Point |
| Measure | Value | Day |
| Lowest Dew Point | -6.1 °C. | 20th |
| Highest Dew Point | 11.3 °C. | 6th |
| Mean Dew Point | 2.5 °C. | . |
| Mean Minimum | 0.2 °C. | . |
| Mean Maximum | 5.0 °C. | . |
| Highest Minimum | 8.9 °C. | 9th |
| Lowest Maximum | -0.8 °C. | 19th |
| Lowest Mean | -3.8 °C. | 19th |
| Highest Mean | 10.2 °C. | 9th |
Pressure |
| Measure | Value | Day |
| Lowest Pressure | 983 hPa. | 22nd |
| Highest Pressure | 1035 hPa. | 11th |
| Mean Pressure | 1005 hPa. | . |
*: Includes snowfall (if recorded), which is manually entered so may take a few days to appear for the current month. NB that rain rate and max in 1hr are incalculable for snow events.
**: Rain rates are manually checked and readjusted from software-given values (within a week or so), so may differ from those quoted during current rain events.
NB: Everything below here is currently in development
Summary |
| Day |
Temperature |
Rainfall |
Wind Speed |
Rel Humidity |
Dew Point |
Pressure |
| Min | Max | Avg | Total | Avg | Gust | Min | Max | Avg | Min | Max | Avg | Min | Max |
| 1 | 0.4 | 5.9 | 3.1 | 0.3 | 2.8 | 10.4 | 77% | 95% | 87% | -0.6 | 3.2 | 1.1 | 1001 | 1011 |
| 2 | 5.4 | 10.1 | 7.7 | 10.8 | 3.3 | 13.8 | 86% | 98% | 95% | 3.2 | 9.0 | 7.0 | 989 | 1001 |
| 3 | 2.5 | 7.6 | 6.2 | 2.2 | 5.9 | 19.6 | 74% | 98% | 89% | -0.3 | 7.3 | 4.6 | 989 | 1000 |
| 4 | 1.6 | 7.9 | 4.3 | 1.6 | 4.3 | 10.4 | 74% | 97% | 84% | -0.4 | 7.5 | 1.8 | 998 | 1006 |
| 5 | 7.4 | 11.6 | 9.3 | 5.5 | 6.1 | 15.0 | 82% | 98% | 93% | 6.3 | 10.8 | 8.2 | 993 | 998 |
| 6 | 7.7 | 12.3 | 9.8 | 6.9 | 7.8 | 23.0 | 66% | 96% | 84% | 3.9 | 11.3 | 7.1 | 987 | 1000 |
| 7 | 5.7 | 10.8 | 8.5 | 3.0 | 6.1 | 23.0 | 81% | 94% | 88% | 3.9 | 8.4 | 6.6 | 992 | 1002 |
| 8 | 4.4 | 10.5 | 7.2 | 1.2 | 4.7 | 17.3 | 83% | 98% | 91% | 3.0 | 10.2 | 5.8 | 1000 | 1012 |
| 9 | 9.3 | 11.6 | 10.6 | 0.5 | 3.5 | 12.7 | 95% | 98% | 97% | 8.9 | 10.9 | 10.2 | 1011 | 1022 |
| 10 | 3.6 | 10.0 | 7.6 | 0.6 | 4.0 | 13.8 | 77% | 97% | 89% | 2.8 | 9.5 | 5.9 | 1020 | 1033 |
| 11 | 2.1 | 6.5 | 4.2 | 0.0 | 3.5 | 11.5 | 95% | 98% | 98% | 1.8 | 6.2 | 3.9 | 1032 | 1035 |
| 12 | 3.8 | 7.4 | 5.0 | 0.0 | 4.8 | 15.0 | 81% | 98% | 94% | 2.7 | 6.3 | 4.1 | 1028 | 1033 |
| 13 | 2.3 | 6.2 | 4.2 | 0.5 | 4.9 | 16.1 | 84% | 95% | 91% | 1.3 | 4.2 | 2.9 | 1023 | 1030 |
| 14 | 0.5 | 4.7 | 2.8 | 0.3 | 1.5 | 5.8 | 89% | 98% | 95% | -0.2 | 4.1 | 2.0 | 1017 | 1024 |
| 15 | 0.0 | 3.6 | 1.5 | 0.0 | 2.2 | 8.1 | 77% | 96% | 86% | -2.5 | 3.0 | -0.6 | 1016 | 1020 |
| 16 | -2.1 | 2.6 | 0.1 | 3.3 | 3.2 | 12.7 | 86% | 98% | 94% | -3.5 | 2.3 | -0.8 | 1005 | 1017 |
| 17 | -0.9 | 3.4 | 1.5 | 2.0 | 9.0 | 33.4 | 72% | 98% | 89% | -4.2 | 2.9 | -0.1 | 1005 | 1012 |
| 18 | -2.0 | 0.6 | -0.2 | 3.0 | 7.5 | 32.2 | 86% | 97% | 92% | -3.9 | -0.4 | -1.4 | 1007 | 1015 |
| 19 | -3.5 | 0.7 | -1.7 | 0.0 | 4.6 | 17.3 | 77% | 90% | 86% | -5.3 | -0.8 | -3.8 | 999 | 1015 |
| 20 | -3.3 | 1.1 | -0.4 | 2.0 | 4.9 | 15.0 | 73% | 97% | 84% | -6.1 | 0.2 | -2.8 | 995 | 999 |
| 21 | -2.9 | 1.6 | -0.5 | 6.0 | 2.0 | 10.4 | 85% | 98% | 93% | -4.4 | 1.2 | -1.5 | 984 | 996 |
| 22 | -2.3 | 1.3 | 0.0 | 0.0 | 2.9 | 12.7 | 96% | 98% | 98% | -2.6 | 1.0 | -0.3 | 983 | 990 |
| 23 | -3.9 | 3.8 | -0.5 | 5.7 | 1.5 | 13.8 | 98% | 98% | 98% | -4.2 | 3.5 | -0.7 | 988 | 993 |
| 24 | 1.7 | 4.8 | 3.2 | 1.1 | 2.5 | 9.2 | 98% | 98% | 98% | 1.4 | 4.5 | 2.9 | 985 | 990 |
| 25 | 1.5 | 5.2 | 2.4 | 0.0 | 4.7 | 15.0 | 93% | 98% | 97% | 1.2 | 4.9 | 2.0 | 988 | 1004 |
| 26 | 5.2 | 8.3 | 6.6 | 1.7 | 6.4 | 25.3 | 86% | 98% | 94% | 4.3 | 7.1 | 5.6 | 999 | 1003 |
| 27 | 2.6 | 6.3 | 4.9 | 0.0 | 7.4 | 25.3 | 68% | 95% | 81% | -0.7 | 4.7 | 1.9 | 997 | 1007 |
| 28 | -1.2 | 4.0 | 1.5 | 0.0 | 2.9 | 10.4 | 80% | 98% | 91% | -2.5 | 2.7 | 0.3 | 1003 | 1007 |
| 29 | 1.5 | 3.8 | 3.0 | 11.3 | 7.1 | 25.3 | 94% | 98% | 97% | 1.2 | 3.5 | 2.6 | 991 | 1003 |
| 30 | 2.6 | 4.1 | 3.4 | 6.3 | 5.9 | 15.0 | 98% | 98% | 98% | 2.3 | 3.8 | 3.1 | 990 | 999 |
| 31 | 0.6 | 3.4 | 2.5 | 0.0 | 6.7 | 18.4 | 83% | 98% | 92% | -1.6 | 2.5 | 1.3 | 992 | 1001 |
Graph for this month not available (windtempraintrend122009.gif)
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