Arenado is now one game shy of the club record for consecutive games with a hit which was set by Michael Cuddyer last season.
Arenado had a pair of RBI, Charlie Blackmon homered and knocked in two, and Drew Stubbs recorded three hits with a home run and three runs scored in Colorado's fifth win in its last six.
Juan Nicasio (4-1) earned the win after pitching five innings, allowing one run on two hits and five walks.
Robbie Ross Jr. (1-3) was charged with the loss after surrendering six runs on 12 hits over 5 1/3 innings for Texas, which has lost seven of nine.
Adrian Beltre homered to account for the Rangers' only run.