Will School Be Closed in Ketchum, Idaho?
Real-time probability that schools in Ketchum, Idaho will be cancelled tomorrow, based on live forecast data and local closure thresholds.
Analysis Summary
“Light snowfall of 0.1cm is possible, freezing rain and ice create serious road hazards.”
Risk Factor Breakdown
Weather Data
Temperature
4°C
40°F
Snowfall
0.1cm
next 24h
Precipitation
1.9mm
total
Wind
8 km/h
5 mph
FAQ — Ketchum, Idaho
Will there be a snow day in Ketchum, Idaho tomorrow?
SnowSense™ currently shows a 9% snow day probability for Ketchum, Idaho. Status: Unlikely. Light snowfall of 0.1cm is possible, freezing rain and ice create serious road hazards.
How much snow is forecast for Ketchum, Idaho?
Our model shows 0.1mm of snowfall forecast for the next 24 hours in Ketchum, Idaho, with temperatures around 4°C.
How accurate is the SnowSense snow day calculator?
SnowSense™ uses live Open-Meteo forecast data — aggregating NOAA (HRRR/GFS) and ECMWF models — with regional tolerance modifiers and storm timing analysis. Our confidence score reflects how decisively the conditions point toward (or away from) a closure.
Typical closure threshold
20–30 inches of wet snow
Ketchum gets significant snowfall but also gets rapid clearing from dry air and Chinook winds. A foot of snow can fall and melt in 24–48 hours — which means districts here focus on the melt-freeze cycle (overnight ice on roads cleared yesterday) as much as on fresh accumulation. Temperature swings of 40–60°F in a single day are normal, and that's what actually determines road conditions in the morning.
Elevation, wind, and Ketchum school decisions
Ketchum sits at elevation, which means the air is drier and the snow is lighter and more easily plowed than eastern snow of equal depth. A six-inch powder event in Ketchum is equivalent to maybe two inches of wet snow in the northeast — easier for plows, easier for drivers, less likely to close schools. What does close schools here is the subsequent melt/freeze: daytime sun melts cleared pavement, overnight cold refreezes it to black ice, and the morning drive is dangerous even though no new snow has fallen.
Nearby mountain districts see dramatically more snow than Ketchum proper. Teachers who commute from the foothills or mountain towns may face impassable roads even when Ketchum's roads are clear. That cross-district staffing problem sometimes drives closures that surprise parents in the city itself.
Typical winter in Ketchum
Ketchum averages 120 inches of snow per year but benefits from frequent Chinook wind events that can melt several inches in hours. Schools typically close 3–5 times per winter, primarily for storms that exceed plow capacity or generate ice conditions.
- Seasonal snowfall: 120 inches (mostly dry powder)
- Elevation: influences both snow density and daily temperature swings
- Primary closure trigger: ice on cleared pavement from melt/freeze cycles
- Secondary: foothills and mountain commuter staff unable to reach school
SnowSense™ models mountain-west melt/freeze dynamics explicitly — conditions that eastern snow-day models miss. Live probability for Ketchum refreshes every 30 minutes.
Idaho · 297 words of Ketchum-specific context
Nearby cities
Live forecasts within driving distance of Ketchum
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