Amateur weather station readings at Stoneleigh, near Epsom, UK (N51.36 W0.25). No accuracy is claimed for this data. Use at your own risk.

Data is logged and graphs are drawn by pywws software on a Raspberry Pi running Raspbian Linux.

I bought my first weather station in May 2008, so that month's data is incomplete. During September 2008 the rain sensor stopped working. I mended it in late November, so three months' rain readings are too low.

The weather station's temperature sensor reads too high (because of inadequate shielding from sunlight). According to the UK Met. Office, mean daily maximum temperatures in the London area peak at 22.5°C in July. However, my minimum temperature readings seem to be about right.

2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2017 | 10.9 °C | 7.0 °C | 0.1 °C | 8.4 °C | 0.3 °C | -6.2 °C | 79.3 mm | 14 |

February 2017 | 18.7 °C | 10.2 °C | 1.6 °C | 10.7 °C | 4.3 °C | -1.5 °C | 65.8 mm | 15 |

March 2017 | 22.6 °C | 14.7 °C | 9.5 °C | 11.6 °C | 6.4 °C | 1.5 °C | 33.9 mm | 11 |

April 2017 | 26.5 °C | 17.4 °C | 12.5 °C | 9.2 °C | 4.5 °C | -2.1 °C | 2.3 mm | 3 |

May 2017 | 29.2 °C | 20.9 °C | 12.1 °C | 14.8 °C | 9.5 °C | 1.0 °C | 75.4 mm | 12 |

June 2017 | 35.7 °C | 25.0 °C | 17.0 °C | 18.5 °C | 13.0 °C | 8.5 °C | 50.6 mm | 9 |

July 2017 | 33.2 °C | 24.9 °C | 19.6 °C | 17.6 °C | 13.9 °C | 8.8 °C | 102.1 mm | 12 |

August 2017 | 29.8 °C | 23.5 °C | 14.2 °C | 16.6 °C | 12.1 °C | 6.9 °C | 90.6 mm | 12 |

September 2017 | 24.8 °C | 20.1 °C | 17.7 °C | 16.0 °C | 9.8 °C | 4.8 °C | 34.5 mm | 14 |

2017 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2016 | 14.9 °C | 8.8 °C | 3.4 °C | 11.0 °C | 3.6 °C | -6.4 °C | 88.7 mm | 22 |

February 2016 | 15.0 °C | 9.6 °C | 4.3 °C | 10.7 °C | 2.3 °C | -4.3 °C | 51.7 mm | 13 |

March 2016 | 16.9 °C | 11.8 °C | 6.3 °C | 7.1 °C | 2.4 °C | -3.0 °C | 78.5 mm | 12 |

April 2016 | 20.6 °C | 15.1 °C | 9.4 °C | 8.5 °C | 3.7 °C | -1.5 °C | 45.9 mm | 21 |

May 2016 | 29.0 °C | 20.8 °C | 12.2 °C | 14.1 °C | 9.1 °C | 1.9 °C | 83.7 mm | 7 |

June 2016 | 27.1 °C | 22.0 °C | 12.9 °C | 17.6 °C | 12.2 °C | 8.8 °C | 103.6 mm | 19 |

July 2016 | 34.2 °C | 25.1 °C | 20.2 °C | 22.0 °C | 13.5 °C | 8.4 °C | 28.6 mm | 8 |

August 2016 | 34.6 °C | 25.8 °C | 19.4 °C | 19.1 °C | 13.3 °C | 8.3 °C | 28.7 mm | 8 |

September 2016 | 33.5 °C | 22.9 °C | 15.3 °C | 19.3 °C | 12.8 °C | 5.7 °C | 47.6 mm | 12 |

October 2016 | 20.3 °C | 16.3 °C | 12.4 °C | 10.5 °C | 7.1 °C | 1.8 °C | 38.3 mm | 8 |

November 2016 | 16.9 °C | 10.1 °C | 5.8 °C | 11.6 °C | 2.8 °C | -6.6 °C | 100.3 mm | 17 |

December 2016 | 14.9 °C | 9.7 °C | 3.9 °C | 11.3 °C | 3.5 °C | -3.6 °C | 8.8 mm | 5 |

2017 | 2016 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2015 | 14.8 °C | 8.0 °C | 2.0 °C | 11.9 °C | 2.3 °C | -6.0 °C | 58.6 mm | 20 |

February 2015 | 13.7 °C | 8.1 °C | 2.8 °C | 8.8 °C | 1.5 °C | -4.8 °C | 51.6 mm | 15 |

March 2015 | 17.4 °C | 12.7 °C | 6.6 °C | 9.6 °C | 3.2 °C | -2.2 °C | 29.7 mm | 12 |

April 2015 | 27.0 °C | 17.9 °C | 10.9 °C | 10.6 °C | 4.7 °C | 0.1 °C | 24.0 mm | 8 |

May 2015 | 23.6 °C | 19.0 °C | 10.3 °C | 13.2 °C | 8.0 °C | 3.0 °C | 49.3 mm | 12 |

June 2015 | 31.8 °C | 23.7 °C | 16.6 °C | 20.3 °C | 10.6 °C | 5.0 °C | 19.6 mm | 6 |

July 2015 | 36.2 °C | 24.6 °C | 16.9 °C | 17.0 °C | 12.3 °C | 6.1 °C | 48.2 mm | 11 |

August 2015 | 32.4 °C | 23.6 °C | 15.6 °C | 18.5 °C | 13.3 °C | 8.1 °C | 79.2 mm | 14 |

September 2015 | 24.4 °C | 19.8 °C | 15.0 °C | 15.4 °C | 7.8 °C | 3.1 °C | 62.1 mm | 10 |

October 2015 | 20.6 °C | 16.1 °C | 13.0 °C | 14.3 °C | 7.8 °C | 1.6 °C | 35.9 mm | 12 |

November 2015 | 17.0 °C | 12.8 °C | 6.0 °C | 14.0 °C | 8.2 °C | -4.3 °C | 55.2 mm | 21 |

December 2015 | 16.2 °C | 13.0 °C | 10.0 °C | 13.3 °C | 9.0 °C | 0.2 °C | 40.0 mm | 21 |

2017 | 2016 | 2015 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2014 | 15.0 °C | 11.1 °C | 4.1 °C | 9.3 °C | 4.0 °C | -2.6 °C | 131.4 mm | 27 |

February 2014 | 17.4 °C | 12.6 °C | 8.6 °C | 8.3 °C | 4.4 °C | 0.9 °C | 84.9 mm | 22 |

March 2014 | 24.3 °C | 17.6 °C | 10.0 °C | 9.2 °C | 3.6 °C | -2.3 °C | 21.9 mm | 12 |

April 2014 | 25.4 °C | 19.7 °C | 11.8 °C | 12.1 °C | 6.4 °C | -0.2 °C | 40.0 mm | 11 |

May 2014 | 31.1 °C | 20.7 °C | 12.6 °C | 14.4 °C | 8.6 °C | -0.5 °C | 77.3 mm | 16 |

June 2014 | 29.4 °C | 24.6 °C | 16.7 °C | 14.6 °C | 11.0 °C | 6.1 °C | 43.0 mm | 12 |

July 2014 | 33.2 °C | 27.6 °C | 19.3 °C | 17.9 °C | 14.0 °C | 7.4 °C | 38.8 mm | 13 |

August 2014 | 29.9 °C | 23.3 °C | 17.3 °C | 16.0 °C | 11.4 °C | 5.3 °C | 95.5 mm | 17 |

September 2014 | 27.5 °C | 23.1 °C | 19.3 °C | 16.5 °C | 11.4 °C | 4.6 °C | 15.7 mm | 6 |

October 2014 | 23.3 °C | 17.6 °C | 12.8 °C | 15.7 °C | 10.5 °C | 1.4 °C | 77.1 mm | 18 |

November 2014 | 18.0 °C | 12.1 °C | 6.8 °C | 12.2 °C | 6.5 °C | -1.1 °C | 96.3 mm | 22 |

December 2014 | 13.8 °C | 8.3 °C | 3.5 °C | 11.4 °C | 3.0 °C | -3.8 °C | 30.3 mm | 13 |

2017 | 2016 | 2015 | 2014 | 2012 | 2011 | 2010 | 2009 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2013 | 15.3 °C | 8.5 °C | -0.2 °C | 10.2 °C | 3.0 °C | -5.0 °C | 48.3 mm | 20 |

February 2013 | 17.7 °C | 8.7 °C | 2.7 °C | 9.1 °C | 1.5 °C | -2.9 °C | 28.8 mm | 14 |

March 2013 | 20.8 °C | 9.4 °C | 1.2 °C | 9.0 °C | 1.3 °C | -4.7 °C | 55.5 mm | 14 |

April 2013 | 25.7 °C | 16.4 °C | 4.9 °C | 11.6 °C | 4.7 °C | -2.7 °C | 30.3 mm | 11 |

May 2013 | 27.1 °C | 19.8 °C | 12.1 °C | 13.5 °C | 7.6 °C | 0.9 °C | 41.7 mm | 15 |

June 2013 | 31.3 °C | 23.5 °C | 17.7 °C | 17.1 °C | 11.3 °C | 5.3 °C | 10.8 mm | 8 |

July 2013 | 37.1 °C | 30.6 °C | 18.9 °C | 19.9 °C | 14.9 °C | 11.1 °C | 21.0 mm | 8 |

August 2013 | 36.3 °C | 28.2 °C | 20.9 °C | 17.5 °C | 13.5 °C | 7.8 °C | 52.5 mm | 15 |

September 2013 | 34.6 °C | 22.9 °C | 14.7 °C | 15.9 °C | 10.9 °C | 5.8 °C | 26.1 mm | 12 |

October 2013 | 25.7 °C | 19.7 °C | 11.7 °C | 16.7 °C | 11.1 °C | 2.9 °C | 63.6 mm | 19 |

November 2013 | 16.9 °C | 12.3 °C | 7.5 °C | 10.0 °C | 3.8 °C | -3.3 °C | 48.6 mm | 15 |

December 2013 | 14.7 °C | 10.4 °C | 4.2 °C | 10.7 °C | 4.1 °C | -2.5 °C | 123.9 mm | 21 |

2017 | 2016 | 2015 | 2014 | 2013 | 2011 | 2010 | 2009 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2012 | 16.0 °C | 11.7 °C | 2.4 °C | 11.6 °C | 4.0 °C | -3.6 °C | 18.6 mm | 12 |

February 2012 | 22.2 °C | 11.3 °C | 1.5 °C | 10.5 °C | 2.4 °C | -9.0 °C | 9.3 mm | 7 |

March 2012 | 28.2 °C | 19.0 °C | 9.0 °C | 11.1 °C | 4.7 °C | -0.9 °C | 10.5 mm | 5 |

April 2012 | 22.1 °C | 16.7 °C | 10.4 °C | 11.5 °C | 5.2 °C | -2.9 °C | 50.4 mm | 22 |

May 2012 | 32.5 °C | 21.6 °C | 10.3 °C | 16.0 °C | 10.0 °C | 2.1 °C | 14.1 mm | 11 |

June 2012 | 31.3 °C | 22.3 °C | 14.2 °C | 17.5 °C | 11.5 °C | 5.3 °C | 60.9 mm | 17 |

July 2012 | 36.7 °C | 25.0 °C | 18.1 °C | 16.6 °C | 13.1 °C | 8.9 °C | 79.2 mm | 21 |

August 2012 | 35.3 °C | 27.2 °C | 20.7 °C | 20.4 °C | 14.3 °C | 6.7 °C | 30.6 mm | 13 |

September 2012 | 33.7 °C | 23.4 °C | 12.2 °C | 16.7 °C | 9.9 °C | 4.6 °C | 37.8 mm | 9 |

October 2012 | 22.9 °C | 16.9 °C | 10.0 °C | 13.5 °C | 8.1 °C | -0.2 °C | 89.1 mm | 22 |

November 2012 | 21.2 °C | 13.4 °C | 7.5 °C | 10.9 °C | 4.8 °C | -2.7 °C | 61.2 mm | 18 |

December 2012 | 14.6 °C | 10.3 °C | 0.8 °C | 12.3 °C | 3.8 °C | -4.8 °C | 87.9 mm | 24 |

2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2010 | 2009 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2011 | 15.0 °C | 9.2 °C | 3.1 °C | 11.8 °C | 3.5 °C | -2.0 °C | 27.9 mm | 19 |

February 2011 | 21.8 °C | 12.3 °C | 5.3 °C | 11.6 °C | 5.7 °C | -0.6 °C | 18.9 mm | 13 |

March 2011 | 26.6 °C | 16.3 °C | 6.1 °C | 11.9 °C | 4.0 °C | -4.6 °C | 7.5 mm | 5 |

April 2011 | 34.5 °C | 24.4 °C | 13.5 °C | 13.2 °C | 8.4 °C | 3.6 °C | 1.5 mm | 2 |

May 2011 | 28.5 °C | 22.9 °C | 17.7 °C | 15.3 °C | 9.3 °C | 2.4 °C | 12.6 mm | 9 |

June 2011 | 36.1 °C | 24.4 °C | 15.5 °C | 21.4 °C | 11.3 °C | 6.0 °C | 38.4 mm | 16 |

July 2011 | 31.2 °C | 26.2 °C | 20.4 °C | 15.6 °C | 12.4 °C | 9.2 °C | 31.8 mm | 12 |

August 2011 | 35.6 °C | 25.4 °C | 16.0 °C | 17.6 °C | 13.1 °C | 7.8 °C | 29.4 mm | 18 |

September 2011 | 33.7 °C | 24.0 °C | 16.9 °C | 16.8 °C | 11.9 °C | 4.6 °C | 16.8 mm | 12 |

October 2011 | 33.8 °C | 21.6 °C | 15.2 °C | 16.6 °C | 10.1 °C | 0.7 °C | 13.2 mm | 11 |

November 2011 | 22.5 °C | 15.8 °C | 8.6 °C | 14.7 °C | 8.7 °C | -0.6 °C | 18.9 mm | 15 |

December 2011 | 16.3 °C | 10.9 °C | 5.7 °C | 12.0 °C | 5.1 °C | -2.0 °C | 35.7 mm | 21 |

2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2009 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2010 | 14.7 °C | 7.4 °C | 1.5 °C | 6.6 °C | 0.4 °C | -7.0 °C | 24.3 mm | 17 |

February 2010 | 17.2 °C | 9.9 °C | 4.2 °C | 7.7 °C | 2.2 °C | -2.4 °C | 45.6 mm | 22 |

March 2010 | 21.1 °C | 15.7 °C | 9.0 °C | 11.7 °C | 3.8 °C | -5.4 °C | 22.2 mm | 13 |

April 2010 | 26.8 °C | 21.1 °C | 13.4 °C | 11.0 °C | 5.4 °C | 0.5 °C | 15.3 mm | 7 |

May 2010 | 34.9 °C | 22.1 °C | 10.0 °C | 13.1 °C | 7.0 °C | -1.5 °C | 14.4 mm | 9 |

June 2010 | 35.7 °C | 28.0 °C | 15.7 °C | 17.1 °C | 11.7 °C | 7.1 °C | 14.1 mm | 8 |

July 2010 | 36.0 °C | 28.5 °C | 23.3 °C | 19.3 °C | 15.1 °C | 10.3 °C | 5.7 mm | 6 |

August 2010 | 31.8 °C | 25.3 °C | 20.6 °C | 20.0 °C | 12.9 °C | 6.0 °C | 48.6 mm | 18 |

September 2010 | 29.5 °C | 23.4 °C | 15.2 °C | 16.9 °C | 11.2 °C | 5.1 °C | 22.5 mm | 10 |

October 2010 | 27.2 °C | 19.2 °C | 13.4 °C | 15.9 °C | 8.4 °C | -2.4 °C | 35.7 mm | 18 |

November 2010 | 22.0 °C | 12.3 °C | 1.5 °C | 15.9 °C | 4.0 °C | -6.1 °C | 17.1 mm | 14 |

December 2010 | 10.8 °C | 5.0 °C | -0.5 °C | 7.8 °C | -0.7 °C | -9.2 °C | 12.0 mm | 13 |

2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2008

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

January 2009 | 15.4 °C | 9.8 °C | -0.6 °C | 8.2 °C | 1.1 °C | -7.7 °C | 42.9 mm | 18 |

February 2009 | 20.6 °C | 11.4 °C | 1.7 °C | 8.4 °C | 2.2 °C | -4.3 °C | 21.6 mm | 12 |

March 2009 | 24.3 °C | 17.4 °C | 11.3 °C | 10.2 °C | 3.5 °C | -2.9 °C | 25.2 mm | 12 |

April 2009 | 27.0 °C | 20.9 °C | 11.7 °C | 11.3 °C | 7.2 °C | 1.0 °C | 16.2 mm | 13 |

May 2009 | 32.0 °C | 23.4 °C | 14.4 °C | 13.6 °C | 9.3 °C | 3.4 °C | 19.5 mm | 12 |

June 2009 | 37.2 °C | 27.6 °C | 16.3 °C | 17.0 °C | 11.7 °C | 5.9 °C | 19.2 mm | 9 |

July 2009 | 37.1 °C | 26.8 °C | 22.1 °C | 18.9 °C | 13.9 °C | 10.4 °C | 40.8 mm | 19 |

August 2009 | 33.6 °C | 28.1 °C | 22.3 °C | 17.9 °C | 13.8 °C | 8.6 °C | 13.2 mm | 9 |

September 2009 | 32.0 °C | 26.1 °C | 16.5 °C | 17.8 °C | 11.4 °C | 6.2 °C | 11.4 mm | 5 |

October 2009 | 27.1 °C | 21.2 °C | 14.8 °C | 13.9 °C | 9.2 °C | 0.2 °C | 12.6 mm | 15 |

November 2009 | 19.6 °C | 15.0 °C | 7.6 °C | 13.5 °C | 7.5 °C | -1.4 °C | 85.8 mm | 23 |

December 2009 | 17.4 °C | 9.6 °C | 2.1 °C | 11.4 °C | 2.3 °C | -5.4 °C | 35.7 mm | 22 |

2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009

Month | Temperature | Rainfall | ||||||
---|---|---|---|---|---|---|---|---|

daytime maximum | nighttime minimum | total | rainy days | |||||

highest | average | lowest | highest | average | lowest | |||

May 2008 | 32.0 °C | 23.9 °C | 12.8 °C | 14.7 °C | 9.7 °C | 1.3 °C | 37.5 mm | 10 |

June 2008 | 32.6 °C | 24.8 °C | 17.6 °C | 17.0 °C | 11.3 °C | 6.6 °C | 25.5 mm | 9 |

July 2008 | 35.6 °C | 26.3 °C | 17.8 °C | 17.0 °C | 13.5 °C | 8.4 °C | 54.6 mm | 7 |

August 2008 | 31.4 °C | 24.6 °C | 19.8 °C | 17.7 °C | 14.2 °C | 8.4 °C | 45.3 mm | 18 |

September 2008 | 28.3 °C | 23.2 °C | 16.6 °C | 15.3 °C | 10.1 °C | 4.8 °C | 37.8 mm | 7 |

October 2008 | 29.0 °C | 19.4 °C | 15.1 °C | 13.9 °C | 6.6 °C | -1.3 °C | 0.0 mm | 0 |

November 2008 | 19.1 °C | 12.8 °C | 5.4 °C | 12.0 °C | 5.9 °C | -2.9 °C | 15.0 mm | 8 |

December 2008 | 15.9 °C | 9.9 °C | 2.3 °C | 11.0 °C | 1.8 °C | -6.2 °C | 35.4 mm | 11 |