Winter Storm Warnings in Seattle, Washington
Seattle sits in a curious meteorological middle ground — mild enough that heavy snow is genuinely rare, yet geographically exposed enough that when winter storms do arrive, they can catch the region off guard. Between 2012 and 2024, Seattle averaged just 9.6 inches (24.5 cm) of snowfall per year, a modest figure that reflects how infrequently cold Arctic air manages to spill over the Cascades and reach the coast. The snowiest months tend to be February, December, and January, in that order — a reminder that late-season cold snaps are very much part of the local pattern.
True heavy-snow events are uncommon here. On average, Seattle sees roughly 0.2 heavy-snow days per year, meaning a significant accumulation event happens only about once every five years. Major snow days — the kind that paralyze most cities — are effectively nonexistent in the long-term record. Average winter overnight lows hover near 36.3°F (2.4°C), keeping the city perpetually close to the freezing line without consistently crossing it.
When the National Weather Service does issue a winter storm warning for the Seattle area, it signals conditions serious enough to pose real travel and safety hazards — typically a combination of meaningful snow accumulation, ice, or freezing rain. It's worth noting that warning thresholds vary significantly by region; the snowfall amounts that trigger a warning here would not necessarily do so in areas accustomed to heavier winters. In Seattle, even a few inches warrants close attention.
| Years analyzed | 13 winters (2012–2024) |
|---|---|
| Avg. annual snowfall | 9.6 in (24.5 cm) |
| Snowiest months | February, December, January |
| Avg. winter overnight low | 36.3°F (2.4°C) |
| Heavy-snow days per year | 0.2 |
Climatology figures are approximate estimates for the period shown and may differ from official local records.
Watch vs warning: a winter storm watch means a major storm is possible in Seattle within 12–48 hours (be prepared); a winter storm warning means it is happening or about to (take action now). For full definitions, see the complete winter storm warning guide.
Seattle winter storm FAQ
Is there a winter storm warning in Seattle right now?
The live status at the top of this page shows whether a winter storm warning, watch, or advisory is currently in effect for Seattle, Washington. It checks live forecast and alert data automatically and refreshes every time the page loads.
Does Seattle get winter storm warnings often?
Seattle sees only occasional snow, so winter storm warnings are infrequent, though disruptive snow and ice events do occur. The frequency varies year to year with the track of major storm systems.
How much snow triggers a winter storm warning in Seattle?
There is no single national trigger: warning criteria are set by each local National Weather Service office, ranging from a couple of inches of snow in areas where snow is rare up to 6 inches or more in snow-belt regions, and significant ice accumulation can warrant a warning on its own. In a lower-snow area like Seattle, warnings can be issued for amounts snowier regions would shrug off.
What should I do during a winter storm warning in Seattle?
Avoid travel if possible, stay indoors and keep warm, prepare for power outages, keep an emergency kit, and check on elderly or vulnerable neighbours. Follow guidance from Washington authorities and the National Weather Service (NWS).
Winter storm warnings in nearby locations
- Winter storm warning in Tacoma, WA
- Winter storm warning in Bellingham, WA
- Winter storm warning in Yakima, WA
- Winter storm warning in Portland, OR
- Winter storm warning in Salem, OR
- Winter storm warning in Eugene, OR
See all locations, read the latest winter weather news, or the full winter storm warning guide. Definitions follow the National Weather Service (NWS) criteria; thresholds vary by region.