Snow Day Calculator

Predict school closures with advanced weather analysis

Enter Your Location

Enter your US or Canadian ZIP code

How It Works

Our Snow Day Calculator analyzes multiple factors to predict school closures:

Weather Data

Real-time weather forecasts and precipitation analysis

School Patterns

Historical closure data and district policies

Advanced Algorithm

Machine learning predictions with 85% accuracy

No Prediction Yet

Please go to the Calculator tab and enter your information to get a prediction.

News and About

The Snow Day Calculator started as a fun middle-school side project: I manually typed in local weather and used a simple formula to guess the odds of a snow day. Today, it’s a full-featured tool that automatically pulls real-time weather data for any U.S. or Canadian ZIP/Postal Code and estimates school closure chances with a refined algorithm—serving 5+ million users every year.

The Snow Day Calculator has been highlighted by numerous media outlets for its accuracy and ease of use.

Featured Coverage

Written by: Ben

5M+
Annual Users
85%
Accuracy Rate
50+
States Covered
15+
Years of Data

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Contact David Sukhin

If you use this form, I will get back to you with a detailed response to your question or comment as soon as I can. If you include a valid email address, I guarantee to get back to you!

Historically there have been LOTS of emails, but I make a point to read each one as soon as I receive it. I'm looking forward to hearing your ideas, comments, and questions!

If you want a quicker, less detailed response or you have a question about your current Snow Day Prediction, post a comment on the Snow Day Calculator Facebook Page or tweet it to @SnowDayCalc.

How the Snow Day Calculator Works

The Snow Day Calculator estimates the likelihood of school closures or delays by blending live weather forecasts with local school closure patterns. Our model looks at multiple signals—precipitation type and timing, expected snowfall totals, temperature, wind, and existing snow depth—then adjusts for district behavior (public vs. private vs. college) and the number of snow days already used.

  • Inputs: ZIP/Postal Code (US/Canada), school type, snow days used this year
  • Outputs: Today & Tomorrow closure/delay likelihood with a plain-English explanation

Popular Uses for the Snow Day Calculator

  • Parents & Students: Plan childcare, commute, and study schedules the night before a storm.
  • Teachers: Prepare lesson pacing, remote-day materials, or reschedule assessments.
  • Administrators: Sense-check local conditions against community expectations.
  • Commuters: Anticipate delays and hazardous travel early in the day.

Tip: Check the calculator the evening before and again in the early morning as precipitation timing and temperatures update.

How Many Snow Days Can We Have?

Policies vary by region and district, but most US and Canadian school systems budget 3–7 snow days per year. Snow-belt districts may see 10–15 in a harsh winter, while true outliers can exceed 20. Many districts convert extra closures to make-up days or remote/virtual learning.

The Snow Day Calculator includes a “snow days used” input—after several closures, some districts become more conservative, which can lower the predicted chance of future closures.

Snow Day Calculator — FAQs

It’s a free tool that predicts the chance of a school closure or delay based on your ZIP/Postal Code. It analyzes forecasted snowfall, precipitation probability, temperature, wind, and existing snow depth, then adjusts for school type and how many snow days your district has already used.

Accuracy depends on storm timing, local micro-climates, and district policy. Use it as a planning aid, not an official decision. Recheck in the morning when short-term forecasts update and temperatures settle near freezing (ice risk can change fast).

Snowfall amount, precipitation probability, overnight low (ice), wind (blowing/drifting), and existing snow depth. School type and number of snow days used also shift the score (private often closes sooner; colleges less often).

Yes. Enter your US ZIP Code or Canadian Postal Code to get a local prediction.

Districts often become stricter after several closures to avoid make-up days. The Snow Day Calculator accounts for that tendency by slightly lowering the chance once your district has used multiple snow days.

Yes—higher chances in the mid-ranges often indicate a delay is more likely than a full closure. Extremely high chances can indicate no school or an early dismissal, depending on storm timing.

Most districts budget 3–7 days; heavy-snow regions may see 10–15. More than 20 is uncommon but possible in extreme winters. Extra closures often trigger make-up days or remote learning.

Always defer to your district’s official communication. The Snow Day Calculator is a guidance tool; districts may weigh road crews, bus routes, staffing, and power outages differently.