Winter Storm Warnings in St. Louis, Missouri
St. Louis sits in a transitional climate zone where Arctic air clashing with Gulf moisture can produce everything from a dusting of flurries to a paralyzing ice storm. Over the 13 years analyzed between 2012 and 2024, the city averaged just 12.9 inches (32.9 cm) of snowfall per year — modest by Midwest standards, but enough to cause serious disruption when it falls fast or freezes over.
The snowiest months tend to be February, January, and December, in that order. Temperatures during winter typically bottom out around 27.2°F (−2.6°C) on average, keeping conditions right on the edge where snow, sleet, and freezing rain can switch back and forth within a single storm.
Days with heavy snowfall are rare here — the data shows fewer than one such event per year on average, which makes each significant snow event feel notable when it does arrive.
A Winter Storm Warning issued for St. Louis means the National Weather Service expects hazardous winter conditions that could make travel dangerous or impossible. It is important to understand that warning thresholds are not universal — the snowfall or ice accumulation required to trigger a warning in St. Louis may be lower than what prompts the same alert in Chicago or Minneapolis, reflecting what is genuinely disruptive for this region's infrastructure and residents.
| Years analyzed | 13 winters (2012–2024) |
|---|---|
| Avg. annual snowfall | 12.9 in (32.9 cm) |
| Snowiest months | February, January, December |
| Avg. winter overnight low | 27.2°F (−2.6°C) |
| Heavy-snow days per year | 0.1 |
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 St. Louis 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.
St. Louis winter storm FAQ
Is there a winter storm warning in St. Louis 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 St. Louis, Missouri. It checks live forecast and alert data automatically and refreshes every time the page loads.
Does St. Louis get winter storm warnings often?
St. Louis sees moderate snowfall in a typical winter, with winter storm warnings during the stronger systems. The frequency varies year to year with the track of major storm systems.
How much snow triggers a winter storm warning in St. Louis?
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.
What should I do during a winter storm warning in St. Louis?
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 Missouri authorities and the National Weather Service (NWS).
Winter storm warnings in nearby locations
- Winter storm warning in Springfield, IL
- Winter storm warning in Peoria, IL
- Winter storm warning in Columbia, MO
- Winter storm warning in Evansville, IN
- Winter storm warning in Davenport, IA
- Winter storm warning in Springfield, MO
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.