Close conjunction of Venus and Jupiter. At 05:00 a large cloud covered the eastern sky, but this cleared away by 05:30. Jupiter could be clearly seen naked eye as a separate and much dimmer object. The view was improved in 10x50 binoculars.
Joe Rao has posted a list of similar conjunctions:
DATE SEPARATION WHEN VISIBLE
1975 February 17 10 arc minutes Evening sky
1999 February 23 11 arc minutes Evening sky
2014 August 18 15 arc minutes Morning sky
2016 August 27 5 arc minutes Evening sky
2039 November 2 14 arc minutes Morning sky
2056 February 12 8 arc minutes Morning sky
I observed the one in 1999, actually the evening before, as the evening itself was clouded out.
Michael Watson has posted a nice image of the conjunction:
Temperature = 10°C