Frigid temperatures are likely by the end of this week with highs only in the teens Thursday & Friday.
Light Snow Early This Week
A storm system brought light to moderate snow to the Finger Lakes on Sunday. Precipitation from this system has ended Monday morning as dry air wraps into the system. As low pressure tracks across Canada today, a few more rain showers and flurries will be possible later this afternoon and evening. No accumulation is expected from this precipitation.
Tuesday will start off cloudy, but dry. However, another weak system will slide through during the afternoon and evening hours. A round of light snow is possible with this system, but snow should only accumulate around an inch or two.
Lake effect snow will develop off of the Great Lakes on Wednesday into Thursday. Initially, snow bands will align to the northeast of the Great Lakes, keeping the Finger Lakes primarily snow free. Wednesday night, the bands will traverse south, resulting in a quick coating to an inch or two Wednesday night. A few snow showers will be possible off Lake Ontario Thursday into Friday, but with little if any accumulation.
Temperatures Turn Frigid
The bigger weather story this week will be the coldest air of the season, by far, arriving for the end of the week.
Temperatures will be near to slightly above normal to start the week. High temperatures should top out around or just above 40 degrees on Monday and in the mid 30s on Tuesday.
Colder air will start to work in on Wednesday. Temperatures will start Wednesday in the mid 20s and will remain steady or drop slightly during the course of the day.
Wednesday night, as the lake effect moves south, temperatures will fall back into the teens and single digits. Highs on Thursday will only reach the upper teens.
Thursday night is when the bottom really falls out, with the potential for widespread temperatures below zero. Some of the typically colder areas across the Southern Tier could see morning lows Friday as cold as -15 degrees. High temperatures Friday afternoon will again be in the teens.
Temperatures should rebound to the 30s by the weekend, but more cold weather is expected next week and beyond.