Also, this does not really look like a situation where time of day will dictate the precip type (i.e. snow in the morning and changing to rain in the afternoon), which sometimes happens at this time of year. 925 mb temps are progged to be -2C to around -5C in some areas, which is good enough to snow in the daytime. Obviously all else being equal, you will tend to get more efficient snow accumulation when it's dark, but rates with this setup look good enough to accumulate during the day at least on the colder surfaces. Will take some heavier rates to get it to stick on the roads, which can't be ruled out.