About SnowDayMeter

SnowDayMeter is a free snow day calculator: a ZIP code in, the chance of a school closure out, with every reason written down. It exists because the sites that came before it return a number with no explanation and fall over on the nights they are needed most.

Where the data comes from

Hourly forecasts from Open-Meteo (open data, blended from NOAA, ECMWF and national services), active alerts from the US National Weather Service, and a per-state closure threshold we maintain from district practice. The model is published in full on the how it works page and scored on the accuracy page.

Not a decision

The meter gives a probability. Your district decides, usually between 4 and 6 am, and it knows things a forecast cannot. Read the terms.

How the site is funded

Display advertising during the winter, placed below the result and never between the input and the number. No sponsored readings.

Contact

hello@snowdaymeter.com