| December 1998 - Summary of Weather | |||
| Highest Temperature | 12.5 | ºC | 11th, 12th, 14th |
| Minimum Temperature | -2.5 | ºC | 3rd |
| Mean Maximum Temp | 9.6 | ºC | |
| Mean Minimum Temp | 5.7 | ºC | |
| Mean Temperature | 7.6 | ºC | |
| Mean Daily Range | 3.9 | deg C | |
| Maximum Range | 7.5 | deg C | 21st, 24th |
| Highest Minimum | 12.0 | ºC | 12th, 14th |
| Lowest Maximum | 1.5 | ºC | 3rd |
| Total Rainfall | 145 | mm | |
| Maximum Daily Rainfall | 23 | mm | 20th |
Temperature and rainfall readings are for the 24 hours ending 6 p.m.
| December 1998 | |||
TEMPERATURE |
RAINFALL | ||
| Date | MIN (ºC) | MAX (ºC) | mm |
| 1 | 3 | 7.5 | |
| 2 | 1 | 4.5 | |
| 3 | -2.5 | 1.5 | |
| 4 | 0.5 | 6 | 3 |
| 5 | 3.5 | 7 | 2 |
| 6 | 4.5 | 8.5 | trace |
| 7 | 4.5 | 11 | trace |
| 8 | 10 | 11.5 | 13 |
| 9 | 9 | 11 | 1 |
| 10 | 9.5 | 11.5 | 1 |
| 11 | 7 | 12.5 | 1 |
| 12 | 12 | 12.5 | 4 |
| 13 | 8 | 12 | trace |
| 14 | 12 | 12.5 | 1 |
| 15 | 10 | 12 | 4 |
| 16 | 6.5 | 10.5 | 1 |
| 17 | 10 | 11.5 | trace |
| 18 | 7.5 | 11 | 10 |
| 19 | 5.5 | 8.5 | 13 |
| 20 | 2.5 | 5.5 | 23 |
| 21 | 0.5 | 8 | 2 |
| 22 | 3 | 10 | 3 |
| 23 | 6.5 | 10.5 | 12 |
| 24 | 3.5 | 11 | 3 |
| 25 | 7 | 11.5 | 13 |
| 26 | 7 | 11 | 13 |
| 27 | 6.5 | 10.5 | 3 |
| 28 | 4 | 7 | 1 |
| 29 | 3.5 | 9.5 | trace |
| 30 | 5.5 | 11 | 1 |
| 31 | 5.5 | 8.5 | 17 |