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>log in to commentI built this tool to give a quick, no‑slider snow‑day chance by pulling live hour‑by‑hour forecasts and adjusting for regional school habits. Just enter a ZIP or postal code and you get a result in about a second. Let me know what works and what could be better 😊
Free tool that predicts school-closure chances for the 2026-27 winter using hourly NOAA/Environment Canada forecasts.
- for
- Parents, students and teachers who need quick snow-day predictions for US and Canada schools.
- pricing
- free
Key features
- Geocode lookup — Enter ZIP, postal code or city and the tool instantly finds your exact location.
- Pre-dawn analysis — Analyzes hour-by-hour forecast from 3 AM-7 AM for snow, ice, wind and cold.
- Regional scaling — Adjusts scores based on local school-closure habits for each region.
- Live map view — Shows a refreshed hourly map of snow-day chances across the US and Canada.
- Weather alerts integration — Displays NWS or Environment Canada warnings directly in the result.
- Badge system — Shows Pre-Dawn Peak, Black Ice, Blizzard Synergy and cold-weather badges with point adjustments.
Use cases
- Parent checks chance the night before to plan childcare or remote-learning setup.
- Teacher prepares schedule adjustments based on predicted closure likelihood.
- School district staff uses the score as a quick reference during early-morning decision making.
- Family compares chances for multiple children in different districts.
Snow Day Calculator 2026-27 FAQ
How accurate is the Snow Day Calculator?+
It uses the same NOAA and Environment Canada models as weather services; accuracy depends on forecast quality and cannot predict district-specific factors.
When should I check the calculator?+
Best between 8 PM-10 PM the night before, and again around 5 AM if a storm is imminent.
Does it work with Canadian postal codes?+
Yes, full or partial Canadian postal codes are accepted.
Why are there no sliders to adjust the weather?+
The tool reads the real hour-by-hour forecast automatically, eliminating guesswork.
Is the service free and does it store my location?+
It is completely free with no sign-up; only the entered ZIP/postal code is used for the forecast and is not saved.
What do the badge icons mean?+
Badges (Pre-Dawn Peak, Black Ice, Blizzard Synergy, extreme cold) add points to the score based on specific hazardous conditions.
Summarized by DevHunt from snowdayprediction.online · Oct 28, 2026. Details may change; check the official site.
