Forecasts update every hour; predictions are estimates.

Snow Day Predictor

Estimate your school closure probability in seconds from forecast conditions.

This is an estimate, not an official closure notice. Always confirm with your school board or transportation provider. See official source links.

Find your school board

    Will schools close tomorrow?

    Today's community vote

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    Snow Day Chance
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    Analyzing weather data...

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    Total Snowfall
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    Peak Intensity
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    8 AM Temp
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    8 AM Wind
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    Forecast Inputs

    Each estimate is calculated from forecast snowfall, wind, temperature, and visibility for school commute hours.

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    Rule-Based Model

    The score is generated by published weighting rules in the page code. It is meant for planning, not for official decision-making.

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    Verify Officially

    Always confirm closures with your district website, transportation alerts, and local emergency notices before acting on a prediction.

    Coverage Status

    We currently publish detailed guides for selected states, provinces, and Ontario boards.

    Use the school directory to see active coverage pages.

    Data and Method

    • Forecast provider: Open-Meteo API
    • Geocoding: OpenStreetMap Nominatim + local fallbacks
    • Scoring logic: deterministic weather-based rule weights

    Read full methodology

    Editorial Standards

    We disclose limitations, avoid guaranteed outcomes, and link to primary official sources.

    View editorial policy

    ❓ Frequently Asked Questions

    Is this an official closure announcement?

    No. This is an estimate built from forecast data. Official closure decisions come from your school board or transportation authority.

    What weather factors are included?

    Snow accumulation, snowfall rate, commute-hour timing, temperature, wind chill, wind speed, and low-visibility risk are all included in the scoring model.

    What locations are supported?

    You can enter Canadian postal codes and U.S. ZIP codes. District pages are available for selected regions listed in the schools directory.

    Where should I verify final status?

    Check official district channels, transportation websites, and emergency alerts. We maintain a source list at sources.html.

    📝 Snow Day Tips & Updates

    January 2026

    Understanding HDSB's Snow Day Decision Process

    Learn how Halton Student Transportation Services evaluates weather conditions and makes the call to close schools...

    Read More →
    December 2025

    Top 5 Activities for an Unexpected Snow Day

    School's cancelled! Here are the best ways to make the most of your snow day in Halton Region...

    Read More →
    November 2025

    Historical Snow Day Trends: What the Data Shows

    We analyzed 10 years of HDSB closures to find patterns in when and why schools close...

    Read More →

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    Browse currently available region pages and board guides.

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