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iahuang/snowday.py

Last active November 9, 2025 17:12
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Simple Python API for snowdaycalculator.com
Raw
snowday.py
import requests
from dataclasses import dataclass
import re
import datetime
class SchoolType:
PUBLIC = 0
URBAN_PUBLIC = 0.4
RURAL_PUBLIC = -0.4
PRIVATE = -0.4
BOARDING = 1
def datetime_to_daycode(day: datetime.datetime):
return '{0:%Y%m%d}'.format(day)
class Prediction:
def __init__(self):
self.data = {}
def _set_data(self, daycode, chance):
self.data[daycode] = min(99, chance)
def chance(self, day):
daycode = datetime_to_daycode(day)
if daycode in self.data:
return self.data[daycode]
return None
def chance_today(self):
return self.chance(datetime.datetime.today())
def chance_tmrw(self):
return self.chance(datetime.datetime.today() + datetime.timedelta(days=1))
def predict(zipcode: str, snowdays: int=0, schooltype: int=SchoolType.PUBLIC):
response = requests.get(
'https://www.snowdaycalculator.com/prediction.php',
{
'zipcode': zipcode,
'snowdays': snowdays,
'extra': schooltype
}
).text
js_predictions = re.findall(r'theChance\[\d+\] = [\d\.]+;', response)
result = Prediction()
for pred in js_predictions:
key, value = pred.split(" = ")
daycode = re.findall(r'\d+', key)[0]
chance = re.findall(r'[\d+\.]+', value)[0]
result._set_data(daycode, chance)
return result
Raw
snowdaycalculator.md

python-snowdaycalculator

Basic usage

import snowday

prediction = snowday.predict('12345', 0, snowday.SchoolType.PUBLIC)
print(f'There is a {prediction.chance_tmrw()}% chance of a snow day tomorrow.')

Documentation

snowday.predict(zipcode: str, snowdays: int=0, schooltype: int=SchoolType.PUBLIC)

Returns a Prediction object

snowday.Prediction()

  • Prediction.chance(day: datetime.datetime)

    Return the % chance of a snow day on the specified day represented as a datetime object or None if no prediction was listed for that day

  • Prediction.chance_today()

    Returns the chance of a snow day for today, or None if not found

  • Prediction.chance_tmrw()

    Returns the chance of a snow day for tomorrow, or None if not found

snowday.SchoolType

Constants describing the type of school

  • SchoolType.PUBLIC
  • SchoolType.URBAN_PUBLIC
  • SchoolType.RURAL_PUBLIC
  • SchoolType.PRIVATE
  • SchoolType.BOARDING
@thecooldoggo
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thecooldoggo commented Feb 20, 2024 •
edited
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Awesome! Thanks for this.

@03319726465
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03319726465 commented Jun 16, 2025 •
edited
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Great work on this Snow Day Calculator API! It's always inspiring to see how simple tools can offer meaningful, real-time results.

I'm working on something similar but in a different context — a lightweight Arabic tool to help people with حساب فرق العمر age difference calculation) instantly using both Hijri and Gregorian calendars.

Feel free to check it out and let me know what you think.

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