Stoneleigh weather - last 7 days

Recent amateur weather station readings at Stoneleigh, near Epsom, UK (N51.36 W0.25). No accuracy is claimed for this data. The dew point calculation is not valid for temperatures below freezing and the wind measurements are almost useless. Use at your own risk.

Data is logged and graphs are drawn by pywws software on a WL-500gP router running OpenWRT 8.09 embedded Linux.

RSS Experimental RSS feed of daily weather data.

Summary of the last 7 days

24 hours ending Temperature Wind Rainfall
day max average night min dir average max gust
2013/05/13 09:57 BST 17.9 °C 13.0 °C 11.2 °C SW 3 mph 17 mph 0.3 mm
2013/05/14 09:57 BST 17.4 °C 11.4 °C 7.5 °C WSW 3 mph 19 mph 0.0 mm
2013/05/15 10:00 BST 13.7 °C 9.4 °C 7.3 °C SSE 4 mph 23 mph 7.5 mm
2013/05/16 10:00 BST 17.8 °C 9.4 °C 2.4 °C SW 2 mph 15 mph 0.0 mm
2013/05/17 10:00 BST 21.3 °C 12.0 °C 3.6 °C SE 1 mph 8 mph 0.0 mm
2013/05/18 10:00 BST 16.5 °C 11.2 °C 7.0 °C NW 1 mph 10 mph 0.0 mm
2013/05/19 10:00 BST 20.3 °C 13.4 °C 8.3 °C NW 1 mph 12 mph 0.0 mm

Forecasts of the last 7 days

I've recently been experimenting with a simple weather forecaster. It's a computer implementation of the 1915 patent 'pocket forecaster' made by Negretti and Zambra, a firm of instrument makers. To test its accuracy, here are its predictions for the last week.

date & time Forecast for the following 12 hours
Monday 13 May, 08:56 BSTFairly fine, improving
Tuesday 14 May, 08:56 BSTRain at times, very unsettled
Wednesday 15 May, 08:59 BSTRather unsettled clearing later
Thursday 16 May, 08:59 BSTShowery, bright intervals
Friday 17 May, 08:59 BSTBecoming fine
Saturday 18 May, 08:59 BSTUnsettled, rain later
Sunday 19 May, 08:59 BSTFine weather

Graphs of the last 7 days

Graphs of last 7 days weather at Stoneleigh, near Epsom