Last week, heat records were being set in Western New York.
This week, there may be snow.
The National Weather Service's forecast for this week has that four-letter word possibly appearing Wednesday night into Thursday morning.
A "cold front will bring chances for rain showers Wednesday turning cold enough perhaps for some wet snow across higher elevations Wednesday night," Monday's National Weather Service forecast stated.
Because the prevailing flow will be from the northwest, most of the lake-effect precipitation will be found downstream of Lake Ontario with a little bit across the Western Southern Tier, the weather service said.
However, as cold air deepens, forecasters said there's a possibility that some flakes could mix in with showers in other areas.
Although models show precipitation staying as mainly rain, Buffalo's weather service forecasters said their past experience suggests that when temperatures dip to -8 degrees Celsius about 5,000 feet above the ground, wet snow happens.
The extended forecast for Orchard Park Wednesday night has "a chance of rain showers before 4 a.m., then a chance of rain and snow showers."
"There could be a minor coating of accumulation in a few spots across higher terrain and in the most dominant Lake Ontario band," the weather service said. "A few lake-effect rain and snow showers will persist into Thursday morning southeast of the lakes, especially off Lake Ontario."
That should end by Thursday afternoon, however, as temperatures rebound.
Last Monday, Tuesday and Wednesday all saw Buffalo reach record highs in the 80s before temperatures dipped.
This week's forecast said the cold temperatures will continue, with widespread rain showers and gusty winds expected Monday, with below-normal temperatures returning Tuesday through the remainder of the week.
There is a stronger chance of lake-effect snow off Lake Ontario for the Rochester area.
Here is the forecast for the week ahead. There will be several rounds of showers through midweek, with a chance of some light snow mixing in Wednesday night and Thursday morning in some locations. Temperatures trend down through midweek before rebounding by Friday. #nywx pic.twitter.com/YDP0xCOqIp
— NWS Buffalo (@NWSBUFFALO) October 15, 2018