Weather forecasts are predictions and there is significant room for error. [1] X Research source As a general rule, predictions are most accurate within a range of two days and typically reliable as far in advance as seven to ten days. [2] X Research source

Check the phone or email that your school or employer uses to contact you. You can also check a local news station’s website for a list of cancellations. These are usually updated as soon as decisions are announced.

The National Oceanic and Atmospheric Administration broadcasts weather forecasts and alerts all hours of the day through the NOAA Weather Radio All Hazards system. You will need a special receiver to pick up the frequency; look for radios with the Public Alert logo or the NOAA Weather Radio (NWR) All Hazards logo at an electronics store. Check the NOAA website for a list of nationwide frequencies.

The National Weather Service provides the data that most meteorologists use in making their predictions. Different meteorologists arrive at different forecasts by using different models. [3] X Research source Websites for broadcast news, like CNN and local news affiliates, typically provide weather forecasts on their websites as well. Each prediction may be different, so it may be worth checking multiple forecasts to establish the probability of snow.

The National Oceanic Atmospheric Administration provides searchable information regarding average temperature and precipitation by month and year for the continental United States, WeatherDB provides a searchable index of average snowfall in U. S. cities, and Weather Underground also offers searchable records of weather history).

Learn how to set a barometer and how to read a weather map in order to track changing weather conditions for yourself. [4] X Research source Typically, falling atmospheric pressure signals coming precipitation. If air temperatures are right, precipitation will fall as snow (typically between -2° and 2°C or 28° and 35°F). You can purchase an all-in-one digital device that performs the functions of each of the instruments necessary for a functional weather station. Models can cost between $150 and $2,500 depending on quality and complexity. [5] X Research source You can build your own instruments from common items. [6] X Research source

Cirrus clouds typically are accompanied by fair weather, while stratus clouds can bring light precipitation and cumulus clouds can bring heavier precipitation.

Learn dangerous weather patterns for the region in which you live or are traveling. [8] X Research source Old sayings lack complexity, but can help you get a general sense for coming weather. Look to the eastern sky to see whether the air is dry: “Red sky at night, sailors delight. Red Sky in morning, sailors take warning. ”[9] X Research source Or, gauge air pressure by noting how high geese fly: “If the goose honks high, fair weather. If the goose honks low, foul weather. ”