We moved to NH in mid november years back and we had an assload of snow week after week as soon as we moved in. We're from the northeast so it wasn't so bad but if you've never shoveled snow before then get ready!

Anytime between mid Nov onward.. honestly. It can snow then fully melt.off several times before the snow actually "stays" for the season.

It may start a *bit* later, but the southern tier also gets more of the "ice storm" flavor of nor'easter. It'd rather have a foot and a half of snow on the ground than an inch and a half of ice in the tree tops (well, for a little while, until they snap and take the power lines down... again). Look up the 2011 Halloween Nor'easter. Of course we also had the winter several years back where the curbs were buried under several feet of packed snow and ice; you never saw so many MacGyver'd mailboxes (think hockey sticks stuck in snowbanks with five gallon buckets hanging from them; I didn't see my regular mailbox for weeks).

The latitude makes a difference, too. There are days where you might not see the sun except through your workplace window because both commutes are in darkness. That's when the sun manages to burn through the clouds. If you think you're susceptible to seasonal depression, get some "daylight" bulbs, light boxes, etc.

Plan your trips... more than once I thought I'd given myself enough time to get home and discovered that my nominal 40 minute commute was two and a half hours driving through tire tracks on highways with snow four inches deep.

Remember that four wheel drive does not necessarily mean four wheel stop. Wrecker drivers can tell stories of people who thought their SUV was immune to road conditions. Keep a blanket, light, shovel, and possibly even traction mats in your car.

Above all, make nice with your neighbors. In New Hampshire you likely won't be buddy-buddy with them, but a friendly greeting here and there may buy you some good will in the form of help digging your car out of the snowbank you didn't realize the plow left behind.

Hampton will give you the unpredictability of the Ocean Effect, depending on the storm it’ll either keep snowfall down, or boost it and ice storms will be more common near the coast

Derry is further inland (in the Manchester area) and gets more snow than ice

Salem is somewhere in between…

If we get all the way to Thanksgiving without appreciable snow on the ground it's practically a miracle.

Sometimes in those areas it snows on Halloween.