WISCONSIN — Measurable snowfall is a regular and well-documented occurrence in Wisconsin during the month of January, based on long-term climate records and historical weather data collected across the state, according to the National Weather Service.
January is typically the coldest month of the year in Wisconsin. Average temperatures statewide often remain below freezing, creating conditions that favor snow rather than rain when precipitation occurs. Because temperatures are consistently cold, snow that falls in January is also more likely to accumulate on the ground instead of melting quickly.
Historical snowfall data from weather stations across Wisconsin show that most locations record multiple snow events during January.
Northern Wisconsin generally experiences higher snowfall totals due to colder temperatures and more frequent winter storm systems, while southern parts of the state also see regular snow accumulation, though totals are usually lower than in the north. Areas influenced by Lake Superior and Lake Michigan can experience additional snowfall from lake-effect processes when cold air moves across the warmer lake waters.
On average, January contributes a significant portion of Wisconsin’s total seasonal snowfall. Many cities routinely measure several inches of snow over the course of the month, often spread across multiple events rather than a single storm. Snowfall can range from light accumulations to heavier events, depending on storm tracks, available moisture, and temperature profiles.
Climate records spanning several decades confirm that measurable snowfall in January is not unusual but expected across much of the state. While the exact amount varies from year to year and from region to region, past weather data consistently show that January remains one of the most active months for snowfall in Wisconsin.
As a result, winter driving conditions, snow removal operations, and cold-weather preparedness are ongoing considerations for residents throughout the state during January, reflecting the historical likelihood of accumulating snow during this time of year.
