A weak cold front will move through central New York tonight. The biggest impact will be an increase in clouds over us. The lower atmosphere is dry enough that we would be surprised if there is any thing more than a couple of sprinkles or flurries that fall tonight.
Behind the front will be a slightly cooler air mass for Saturday. Even though temperatures are likely to be in the upper 30s to near 40 that is actually close to normal for the middle of December.
While our weather will be quiet tomorrow, we will continue to track a storm system coming out of the Plains states. This storm will move east and northeast to a position somewhere in the lower Great Lakes region by Sunday. This will result in an increase in cloud cover Saturday night with rain or a wintry mix developing. Since low pressure is weakening as it approaches, we think the precipitation for us will be generally light in nature Saturday night and Sunday. Additionally, the low would head north into Canada Monday which may draw milder air into the region.
The next in a series of storm systems will start to impact central New York Monday night into Tuesday. Our computer models over the last couple of days have suggested a number of different solutions as to how this system will unfold. Right now, it looks like one low will track north into western New York by Tuesday morning. This should initially keep us mild with rain the likely precipitation type. By later in the day, however, a secondary low will try to form somewhere near the southern New England coast. If that were to happen we could see a change in our precipitation from rain to snow.