Which States See Snow in December
December snow commonly affects parts of the Northwest, Northeast, and higher-elevation Mountain states, while many southern and coastal regions typically see little to no measurable snow. The following breakdown reflects long-term climate patterns and is useful for planning travel, understanding regional differences, and setting realistic expectations. Use this as an evergreen overview rather than a prediction for a specific year, since actual conditions can vary significantly from one December to the next.
Regions Most Likely to See Snow in December
The Northwest
Washington and parts of Oregon regularly record measurable December snow, especially in mountainous areas and sometimes at lower elevations when storm systems align with cold air. Snowfall totals can be significant in the Cascades, with lowerland accumulations more variable.
The Northeast and Great Lakes
States from Maine through New Hampshire, Vermont, Massachusetts, New York, and Michigan often see snow in December. Lake-effect snow can produce intense, localized bands near the Great Lakes, while nor’easters affect coastal and inland areas alike.
Mountain States
Colorado, Utah, Idaho, Montana, and Wyoming commonly experience December snow at both high elevations and, at times, in valley floors. High terrain can accumulate deep snow, while lower elevations see lighter, more intermittent falls.
Areas with Occasional or Limited December Snow
Portions of the central Plains, Midwest, and higher terrain of Arizona and New Mexico can see rare but measurable snow events in some Decembers. By contrast, most of California’s lowlands, the Southeast, and the Gulf Coast typically see no snow, though high-elevation spots in the Sierra Nevada and southern Rockies may receive occasional accumulations.
Typical December Snowfall Compared by Region
| Region | Typical Snowfall Range in December | Source Type |
|---|---|---|
| Mountains of the West (e.g., Colorado, Utah) | 20–60 inches (51–152 cm) | Climate Normals (1991–2020) |
| New England & Northeast | 15–30 inches (38–76 cm) | Climate Normals (1991–2020) |
| Great Lakes | 10–25 inches (25–64 cm) | Climate Normals (1991–2020) |
| Pacific Northwest (lowlands) | Climate Normals (1991–2020) | |
| Southern & Coastal States | 0 to trace amounts | Climate Normals (1991–2020) |
Key Factors That Determine December Snow
Latitude and Elevation
Latitude sets the baseline: the farther north a location, the colder the average temperatures in December. Elevation amplifies the effect—higher terrain cools more, making snow more likely even in southern states on rare occasions.
Storm Tracks
Pacific Northwest snow often ties to atmospheric rivers that push cold air into coastal ranges. The Northeast sees snow from nor’easters drawing moisture from the Atlantic. The central Plains and Midwest can experience Alberta clippers, fast-moving systems that produce brief but intense snowfalls.
Lake-Enhanced Precipitation
Open water in the Great Lakes fuels lake-effect snow, producing narrow, heavy bands downwind of lakes Erie and Superior. This mechanism can rapidly accumulate snow in localized areas while nearby locations see only light flurries.
Reliable Sources and How to Check Updates
For authoritative details, consult the National Weather Service, NOAA’s National Centers for Environmental Information, and state climate offices. Local NWS offices provide forecast-specific snow probabilities, while climate normals offer long-term context. Radio, TV, and trusted weather apps can supply timely updates, but cross-check with official sources when planning around adverse conditions.
Preparing for December Snow When It’s Common
If you live in or visit areas with regular December snow, plan for winter driving, home heating, and potential power outages. Keep emergency kits in vehicles and homes, clear drains and gutters before cold snaps, and confirm your heating system is serviced. Understanding typical snowfall and variability helps you make smarter investments in gear and insurance.