Great Falls, Montana, has never been a city that takes winter lightly. Located along the Missouri River in north-central Montana and exposed to Arctic air, strong winds, and rapidly changing weather, the city has experienced some remarkable snow and cold events since systematic climate records began. Modern Great Falls averages roughly 58 inches of snow annually, and winter storms can arrive with winds exceeding 40 mph and temperatures plunging well below zero. Those conditions can transform an ordinary snowfall into a transportation, utility, and public-safety emergency.

Determining the “worst” storms in Great Falls history requires some care. Historical records do not always preserve detailed damage estimates, road closures, power-outage totals, or casualty information for older storms. For that reason, the most useful approach is to look at storms and winter episodes that stand out for extraordinary snowfall, extreme cold, prolonged conditions, or their importance in demonstrating the hazards Great Falls faces. National Weather Service research examining Great Falls snow events found 54 cases producing at least six inches in 24 hours between 1950 and 1989, demonstrating that major snow events have been a recurring part of the city's climate rather than isolated anomalies.

January 1969: A Brutal Combination of Snow and Arctic Cold

The winter of 1969 deserves a prominent place in any history of severe Great Falls winter weather. January brought repeated snowfall while temperatures fell to extraordinarily low levels. On January 21, Great Falls recorded 5.8 inches of snow, followed by additional snow on January 25 and 26. The January 25–26 period produced another 3.2 inches, while the city remained locked in an intense Arctic air mass.

The snowfall totals alone do not completely explain why this episode was so severe. The cold was exceptional. Great Falls reached a low of -37°F on January 23, while the daily high on January 28 was only -21°F. Several other days during the period remained far below zero. The combination of accumulated snow, blowing snow, fog, and extreme cold created conditions that were substantially more dangerous than a single heavy snowfall would have been.

Historical weather observations show blowing and drifting snow during the January 25–26 period, illustrating one of Great Falls' most persistent winter problems: snow does not have to fall heavily to become a major transportation hazard. Strong winds can move existing snow across streets and highways, erase cleared lanes, and create drifts after plows have passed.

There is not enough surviving public documentation to assign a precise citywide dollar figure for damage or a definitive storm-related death toll to this particular January episode. That limitation is important. It would be misleading to invent casualty or damage statistics simply because the weather was extreme. What can be established from the climate record is that residents faced days of dangerous cold, repeated snow, reduced visibility, and conditions capable of threatening vehicles, heating systems, exposed pipes, and anyone caught outdoors.

February 21–22, 1982: A Major Two-Day Snow Event

Another significant Great Falls snowstorm arrived on February 21–22, 1982. National Weather Service research lists 10.2 inches as the two-day snowfall total for this event, placing it among the largest documented 24-hour-or-longer snow events in the city's historical record for the 1950–1989 period.

The surrounding winter conditions made the storm more challenging. February 21 brought 7.1 inches of snow, followed by another 3.1 inches on February 22. Temperatures then fell, with the high on February 23 reaching only 21°F and the low dropping to 9°F. Earlier in the same winter, Great Falls had experienced multiple episodes of subzero temperatures, including a January low of -32°F.

For a city in the early 1980s, a storm of this size placed considerable pressure on transportation and municipal snow removal. Equipment, communications, and forecasting technology were far less sophisticated than they are today. Road crews had to contend with accumulating snow while residents dealt with reduced mobility, difficult commutes, and the possibility of refreezing after streets were cleared.

Although a comprehensive citywide damage figure for the February 1982 storm is not readily documented in the surviving sources, its measured snowfall is significant. It also illustrates an important point about Great Falls history: some of the most disruptive storms were not necessarily single-day blizzards. A storm lasting two days could leave behind a substantial snowpack that subsequently hardened, drifted, or created icy conditions.

January 15–16, 1984: One of Great Falls' Major Midwinter Snowfalls

January 15–16, 1984 produced another major snow event. The National Weather Service's historical analysis lists 10.2 inches for the event, making it one of the largest 24-hour snowfalls recorded in Great Falls during the 1950–1989 study period. Current National Weather Service climate records likewise identify 10.2 inches on January 15–16, 1984 as the record January 24-hour snowfall in the historical dataset cited by the agency.

The significance of this storm goes beyond the number on the snow gauge. A 10-inch snowfall in a city with strong winds can create very different conditions from 10 inches of calm, dry snow. Snow can be compacted into intersections, pushed against parked cars, blown across open areas, and redistributed into drifts. The resulting transportation problems can persist after snowfall ends.

Great Falls' location on the High Plains makes wind an especially important part of the equation. The city itself notes that snow is often accompanied by winds above 40 mph and subzero temperatures. That means residents must consider drifting, visibility, wind chill, and refreezing in addition to the actual snowfall total.

There is no reliable basis for assigning a specific number of storm-related fatalities or a precise damage total to the January 1984 event. Instead, its historical importance comes from the objectively recorded snowfall and its place among the city's major midwinter snowstorms. It is also a useful reminder that a storm does not need to produce catastrophic structural damage to cause a serious disruption to a community.

April 20, 1973: Great Falls' Historic One-Day Snowfall

April 20, 1973 is technically a spring storm rather than a calendar-winter storm, but it is impossible to discuss Great Falls' worst snow events without mentioning it. The storm produced 16.8 inches of snow in the official National Weather Service analysis, making it one of the most remarkable single-day snowfall events in Great Falls history.