30 years mean data

Part of experiment rms

Weather 30-year means at Rothamsted

Updated 21-01-21 with new 1991-2020 mean data. Previous update 22-10-19

Rothamsted Research at Harpenden has the longest run of freely-available daily weather data in England and has been sending returns to the UK Meteorological Office since at least 1878. In 2017, Rothamsted was recognised by the World Meteorological Organization (WMO) as a Centennial Observation Station being one of the relatively small number of sites in the UK that has been recording reliable observations continuously for more than 100 years. Rainfall has been measured daily for more than 160 years, since 1853, using a 5-inch gauge and a much larger, and unusual, 1,000th of an acre gauge. Subsequently, other weather variables were added to the list including temperature from about 1878, sunshine hours from 1890, and wind force/speed from 1915. Weather variables were recorded manually until the end of 2003; an automatic data logger was installed to record the data electronically from 1st January 2004.

These daily weather data at Rothamsted has been summarised to generate 30-year mean sets of weather data :

In referring to these data sets, please use the approrporate DOI and citation available on those pages.

30-year mean maximum temperature

30-year mean average temperature

30-year mean minimum temperature

30-year monthly total rain fall

30-year mean total sunshine

30-year mean daily radiation

30-year mean wind speed

30-year mean soil temperature 30cm under grass

30-year mean soil temperature 100cm under grass

30-year mean evaporation

Note:

See the following citable webpages on this website for the data behind these charts;

Rothamsted Research (2019). Rothamsted 30-year meteorological means 1981-2010. Electronic Rothamsted Archive https://doi.org/10.23637/OARES30YrMeans8180
Rothamsted Research (2019). Rothamsted 30-year meteorological means 1971-2000. Electronic Rothamsted Archive https://doi.org/10.23637/OARES30YrMeans7100
Rothamsted Research (2019). Rothamsted 30-year meteorological means 1961-1990. Electronic Rothamsted Archive https://doi.org/10.23637/OARES30YrMeans6190

Contact the e-RA Curators to arrange a password to download original raw daily weather data from the e-RA database.