There is no point in expecting the dramatic sights of the 2021 edition where Sonny Colbrelli, Florian Vermeersch and Mathieu van der Poel sprinted in the battle for victory unrecognizable... However most sources point towards a likelihood of some rain falling during the night - besides the strong southwestern wind which will make the average speeds significantly higher during the race.
Accuweather, as of the time of writing, gives a maximum chance of 62% of rain at 3am.