The rain graph shows both the monthly accumulated rainfall and the rate at which rain has fallen. The instrumentation is of the "tipping bucket" type and is thus a bit coarse (0.04inches or 1mm) in it's measurement and may fail to detect small amounts of precipitation. This also explains the stripey appearance of the graph.
The accumulated rainfall has to be manually reset on the weather station, so on the first of the month a dramatic drop will appear when this reset is done.
| Howhill Weather - Graphs | Updated: Fri 11 Jan 2008, 05:09 UTC |