Auto Predict or Manually Calculate Snow Day Probability in Your City or Town

Use the tabs to switch between the Snow Day Predictor, and Calculator.

Is today going to be a snow day? Find out now!


Snow-Day.net is a global online service that helps you predict and calculate the probability of school closures caused by winter weather. It uses real-time forecasts and historical snow day data to deliver reliable estimates for snow, ice, and other severe conditions. The platform also includes a blog with fun ideas, rituals, and activities related to snow days, creating a helpful community resource for families, students, and commuters.

The automated snow predictor gives you a quick percentage showing the likelihood of a snow day in your area, while the interactive snow calculator lets you adjust weather conditions manually to explore different scenarios, just like a meteorologist.

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How Our Snow Day Tools Work

We have two types of tools for snow day forecasting which are discussed in detail below:

Snow Day Predictor

Simply enter your ZIP code, city, town name, or the exact latitude and longitude of your area. Select your school or college district’s policy, or leave it set to the default if you’re not sure. Then press the real-time prediction button. Along with the percentage, the snow predictor tool also provides useful information such as:

  • Probability Score (0–100%): shows how accurate the prediction may be
  • Snow Days History: how many times your city has experienced snow days recently
  • 5-Day Weather Forecast: an extended outlook to help you plan ahead
  • Detailed Weather Outlook: today’s forecast at a glance

Manual Snow Day Calculator

This tool is interactive and fun, allowing you to control weather variables such as expected snowfall, low temperature, wind speed, ice accumulation, and wind chill, as well as conditions like blizzard warnings or storms during the morning commute.

In simple terms, you play the meteorologist, adjusting the variable sliders or running what-if scenarios to increase or decrease each factor.

manual snow day calculator preview

That’s a Wrap

We’ve covered our tools in detail, and here’s why we stand apart from other snow day calculators. While most services only work for the U.S. and Canada, our predictor can estimate snow days anywhere in the world where snowfall is possible. It also provides historical context by showing real past snow days alongside current forecasts. With a dual approach, you can get quick automatic predictions or fine-tune the results using your own manual scenarios. Plus, our detailed weather outlook lets you view today’s forecast at a glance, making it easy to plan your day.

We’ve also started an initiative to collect more accurate information about school closures, and we need your help. If your school is closed today, simply fill out the form and report a snow day. Your contribution helps us improve our prediction algorithm and make it more accurate and useful for everyone.

Frequently Asked Questions

It uses real-time weather forecasts along with two years of historical snow day data for your area. While no tool can predict with 100% certainty, it provides a reliable probability based on factors like snowfall, ice, wind chill, and timing.

Freezing rain and ice are often more dangerous than snow because they create slick surfaces that are harder to clear and drive on.

School administrators consider safety first, road conditions, bus schedules, storm timing, and active weather alerts like Blizzard Warnings or Ice Storm Advisories.