The storm coming up on Monday has many possible results. First variable is the precipitation type. This will be changed in part by the speed of the arctic air mass that will be moving in behind this storm. Right now it appears that the arctic front will be moving in slowly. While this will mean that we will see a solid 3 hours of icing, it will also mean that the track of the storm will stay closer to the coast (probably inland) and will guarentee that we will see significant accumulation with this storm. Precipitation will begin in the form of rain, freezing rain, and snow Sunday Night, with light accumulation of snow, and a glaze of ice possible by daybreak. Colder air will start to move in on Monday, and it is likely that temperatures will remain below 30F. In addition, colder air will move in at the upper levels, securing a change to snow, and snow to water ratios over 10:1. The current outlook is for up to 1.5 storm QPF by Tuesday morning. Total snow accumulations by Tuesday morning in Keene will be on the order of 3 to 7 inches with a quarter inch of ice accumulation possible as well. I'll have an official forecast map out later tonight.
With the timing of this storm, the possibility also arises for a delay / cancellation on Tuesday. Monday is Martin Luther King Jr. day so despite a solid chance that school would have been cancelled, alas, we have no school to cancel. In any case, right now, I'm saying a 20% chance of a snow day (unlikely, and a definite decision is "no" at the moment), and a 50% chance of a delay (very possible if the timing of the storm shifts just a few hours later).