Corrected entry: When Phil is driving on the railroad tracks in the evening, the weather is clear and it is not snowing. Later on in the film, Phil is dancing with Rita in the park at around the same time of night and it is snowing. There was no way for Phil to have affected this - the weather should be identical every day.
Greg Dwyer
8th Feb 2018
Correction: Just because it's approximately the same time doesn't make it exactly the same time. It is possible for it to snow for very short periods of time.
Greg Dwyer