How to Use the Snow Day Calculator

A Snow Day Calculator is a simple tool that estimates the probability of school closures based on weather conditions such as snowfall, temperature, and wind speed.

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What It Does:

The calculator uses basic weather inputs to give you an estimated chance (%) that school may be canceled. It is designed for students, parents, and teachers who want a quick, general forecast of whether a snow day is likely to occur.

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Steps to Use:

1. Enter expected snowfall (in inches) in the first field.
2. Enter the expected morning temperature (in °F) for the day school starts.
3. Enter the wind speed (in miles per hour).
4. Click “Check Snow Day Probability.”
5. The result will show your estimated chance of school closure as a percentage.

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Behind the Scenes:

The tool adds points based on:

• Snowfall volume: Heavier snow = higher chance.
• Lower temperatures: Increase risk due to icy roads.
• Higher wind speeds: Boosts closure likelihood due to safety concerns.

It doesn’t consider:

• School district policy
• Road conditions
• Timing of snowfall
• Weekend/holiday schedules

So while it’s helpful, it’s not absolute—just a fun and informative prediction tool.

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Snow Day Calculator FAQ

Q1: Is this an official forecast?
A: No. It’s an estimate based on weather inputs. Always check local news or your school district for official closures.

Q2: What if snowfall happens overnight?
A: This tool assumes snow is already on the ground or falling in the morning. Timing affects decisions, but isn’t factored in here.

Q3: What’s the most important factor?
A: Snowfall is weighted most heavily, but low temperatures and high wind speed significantly increase the chance.

Q4: Can it predict late openings or early dismissals?
A: No, it only provides a rough idea of full-day closures.

Q5: What should I do if it says 100% chance?
A: That’s a strong indication, but still unofficial. Check your district’s alerts to confirm.