This storm for Sunday-Monday has been tricky to predict. Looks right now that the I70 corridor is the line between snow to the north, and mix, and even maybe just rain later on, to the south. Looks messy, and will get really cold starting Monday afternoon, coldest of the season Monday night. But at least February! Remember, spring becomes official in March!
January starts out at 38 degrees for an average high, and ends up at the same temperature. In between it drops to 37 on the 10th, and returns to 38 on the 25th. Hurray! Slow turnaround, but at least a turnaround toward warmer. The average low starts at 24, and drops 1 degree to 23 by the end. The record high is 73, the record low is -22.
Average precipitation is 3.18", average snowfall is 9.8". The wettest was 8.01" in 1979. The most snowfall was 38.8" in 1996.
Looking back at December -
Temperatures were above normal, with the average of the high and low coming in at 2.6 degrees above average. Nice turnaround from November which was so cold for the month. The average high was 43.3, the average low was 30.0.
The highest temperature was 61 on the 1st. The lowest was 19 on the 22nd, 2 degrees warmer than the lowest in November!.
Heating degree days were 842, for the season 1855, now 113 below average.
Rainfall was 0.11" above average, at 3.26 ". Greatest 24 hour rainfall of .73" was on the 23-24th.
Snowfall total was a bit less than November, 2.1", on the 10-11th.
Information from the NWS Harrisburg preliminary monthly data.