The Magpies led Watford thanks to a superb goal from Allan Saint-Maximin shortly after half-time, however the Hornets fired back shortly before the full-time whistle.
Joao Pedro gifted the visitors a point and Eddie Howe was left to continue his search for only their second win of the campaign.
The draw leaves Newcastle in 19th place – only one point above Burnley, who have three games in hand.
The Tyneside club face a trip to Leeds United next weekend.
Here are the best of today’s rumours...
1. Suarez and Cavani sold Spurs move to Bentacur
New Spurs signing Rodrigo Bentacur says his international teammates at Uruguay discussed his move to London with him as Luis Suarez said it "would be a great move" and Edinson Cavani said it was a "spectacular league" to play in (Sky Sports)
Photo: Alessandro Sabattini
2. Uncertain future for Wan-Bissaka due to Dalot deal
Manchester United are set to trigger a contract extension for Diogo Dalot following his fine form, leaving £50m England international Aaron Wan-Bissaka's role in the team uncertain (The Star)
Photo: Matthew Peters
3. Atletico "ready to sell" Arsenal target Morata
Atletico Madrid are "ready to sell" former Chelsea striker and reported Arsenal target Alvaro Morata but the Gunners could face competition from Juventus where the Spaniard is currently on loan (Tuttomercato)
Photo: Valerio Pennicino
4. Gbamin could leave Everton on loan
Everton midfielder Jean-Philippe Gbamin could leave on a loan this month to join CSKA Moscow with sides in the Russian Premier League still able to make transfer moves until February 22 (Liverpool Echo)
Photo: Catherine Ivill