Northern hemisphere lakes are large sources of the greenhouse gases (GHG) methane (CH4) and carbon dioxide (CO2) to the atmosphere, but historically the processes that release them have been ignored in the winter because ice cover is thought to act as a barrier to atmospheric exchange. Nonetheless, climate change is reducing the temporal and spatial extent of total ice cover and intra-winter warming can expose the littoral zone of these lakes, creating more opportunities for gas exchange in the winter. Our goal was to explore how climate driven reductions in ice cover are affecting CH4 and CO2 exchange throughout the winter relative to other times of the year. We selected eight study lakes across Minnesota, U.S.A. that differ in size, depth, mixing regimes, and land use. In each of these lakes we collected vertical profiles of water quality parameters and measured the diffusive flux occurring at the surface. Excluding winter, we found that all lakes consistently acted as a CH4 source, but CO2 was much more variable, with some lakes acting as a sink during different times of the year. Winter samples, in an effort to stimulate intermittent ice-off, were taken through holes drilled into the ice. Our preliminary results of early-winter emissions provide some evidence for these lakes still acting as a source of GHGs, with relatively high emission rates for CO2 but low for CH4. We speculate that this trend could be the result of increased methanotrophy occurring in the early-winter, as CH4 is converted to CO2. As systems become more anaerobic in late-winter, we predict a shift toward CH4-dominated emissions. While these findings are limited to early-winter sampling, our work highlights the potential contribution of winter GHG emissions in northern lakes, broadening our understanding of carbon dynamics in lakes.