Snow Day Calculator 2026 ❄️
AI-Powered School Closure Predictor with 97% Accuracy

Our model achieves 97% accuracy when predicting closures above the 90% threshold. Accuracy is tracked by cross-referencing predictions against actual school closure announcements scraped from district websites and local news feeds.

Yes! Summersnowday.com is 100% free, forever. There are no premium tiers, no sign-ups, and no hidden fees. We believe everyone deserves access to accurate weather information.

We combine live weather data (snowfall, temperature, wind), ground surface temperatures, storm timing, and 10 years of historical closure records. Our machine learning model weights these factors based on your specific region and district's behavior pattern.

Yes! Toggle the Canada flag tab and enter your postal code or city name. The calculator adjusts all units to metric (°C, cm, km/h) and applies Canadian regional closure thresholds.

Our predictor is a decision-support tool, not an official source. Always verify closures with your school district's official website, social media, or automated phone system before making plans.

Our prediction system maintains impressive accuracy rates through continuous algorithm refinement and real-world validation. Short-term forecasts (24–48 hours) achieve accuracy levels of 85–92%, while longer-range predictions (3–5 days) maintain 70–80% reliability. Accuracy can vary by geographic region and the consistency of winter weather patterns.

For optimal accuracy, check predictions within 24–48 hours of anticipated weather events. Conditions and forecasts change rapidly, so recent calculations provide the most reliable guidance. We recommend checking the evening before and the morning of potential snow days.

The system accommodates various educational institution types, though private schools and universities typically have different closure thresholds compared to public schools. Our algorithm adjusts predictions based on the institution type you select.

Yes, our system evaluates conditions that may result in delayed starts, early dismissals, or modified schedules based on storm timing and intensity. The results specify whether we predict a full closure, delay, or early dismissal.

Always prioritize official school district communications over calculator predictions. Use our tool for planning purposes while relying on authoritative sources for final closure confirmations. Our predictions are meant to help you prepare, not replace official announcements.