[1] The Saxon manor of Newton, held by Aluric in the time of King Edward the Confessor, was given to the bishop of Coutances by William the Conqueror.

Lo, who drew their name from Saint-Lô in Normandy; the family, Latinized in documents as "de Sancto Laudo", held the manor in the time of Richard I.

There is evidence of a 3rd-century Roman villa on a site between Newton St Loe and Bath on the south side of the River Avon.

Lower and Middle Coal Measures at depths between 500 and 5,000 feet (152-1,525 m) of the Pensford Syncline, were worked at the Globe Pit in Newton St Loe in the 19th century.

[9] Queen Elizabeth II visited the school on 17 April 1956 when she came to the village following her official opening of the Chew Valley reservoir.

The parish council's role also includes initiating projects for the maintenance and repair of parish facilities, such as the village hall or community centre, playing fields and playgrounds, as well as consulting with the district council on the maintenance, repair, and improvement of highways, drainage, footpaths, public transport, and street cleaning.

The parish falls within the unitary authority of Bath and North East Somerset which was created in 1996, as established by the Local Government Act 1992.

[13] The parish is represented in the House of Commons of the Parliament of the United Kingdom as part of North East Somerset and Hanham.

[14] To the south west of the village and close to the route of the Wansdyke is the Newton Park campus of Bath Spa University.

In conjunction with other sites within the wider area, it has aided the development of a scientific understanding of the history of early glaciation within South West England.

[17] In the summer the Azores high pressure affects the south-west of England, however convective cloud sometimes forms inland, reducing the number of hours of sunshine.

In summer, a large proportion of the rainfall is caused by sun heating the ground leading to convection and to showers and thunderstorms.

[17] The Newton Park mansion, which was built in 1762–65 by Stiff Leadbetter for Joseph Langton,[18] is a Grade I listed building[19] and its estate which is currently home to Bath Spa University.

[20] The grounds include Newton St Loe Castle, comprising a keep (which was part of a fortified mansion)[21] and a 15th-century gatehouse,[22] which are both Grade I listed.

The Duchy of Cornwall purchased the Newton Park Estate, which included much property in the village, following the death of 5th Earl Temple in 1941.