About the Snowfall Predictor
How many inches are coming? The Snowfall Predictor totals hourly snowfall forecasts over the next 24 to 48 hours for your exact location, helping you plan shoveling, travel, and school preparation before the storm arrives.
Why This Tool Matters
Snowfall forecasts drive everything from school schedules to plow deployment and grocery runs. Understanding accumulation timing and intensity helps you prepare before conditions deteriorate.
For a fuller winter picture, also check our Snow Probability Calculator, Snow Accumulation Calculator, and Snow Day Predictor — all powered by the same live forecast data.
How It Works
Forecast total snowfall accumulation over the next 24 to 48 hours. Each time you calculate, this tool pulls live data from the Open-Meteo weather API - including temperature, precipitation, wind, visibility, and hourly forecasts - and applies our snow-focused scoring model for your exact location.
What We Analyze
- Hourly snowfall rates over the next 24-48 hours
- Total accumulation on ground surfaces
- Temperature profile affecting snow density and stickiness
- Wind-driven drifting and visibility reduction
- Storm track and duration from live forecast models
Formula & Methodology
Accumulation = Σ hourly snowfall forecast
Scores are derived from live forecast data and regional winter weather thresholds. They are estimates for planning purposes - not official advisories.
How to Interpret Your Results
Compare your result to local NWS or Environment Canada forecasts for a complete picture.
- Under 2 inches: Light event - minimal disruption expected.
- 2-6 inches: Moderate storm - plan extra commute time and check school alerts.
- Over 6 inches: Major event - consider stocking supplies and avoiding travel.
When to Recalculate
Winter weather changes quickly. Recalculate before bed when a storm is approaching, again between 5-6 AM for school and commute decisions, and any time you receive a weather alert for your area. If conditions feel worse than your last result, trust your eyes and official sources over cached numbers.
Important: SnowDayCalculator.io tools are for informational and educational purposes only. They do not replace official school closure notices, National Weather Service warnings, or government travel advisories. Always follow directives from your school district, employer, and local authorities.