Look up the daily weather forecast for a city, for anywhere from 1 to 7 days ahead. Use this when the question is about the future — what tomorrow looks like, whether the weekend will be dry, whether to pack for rain. You get one entry per day with the expected conditions, high and low temperature, chance and amount of rain, and peak wind speed. For conditions at this exact moment, use get_current instead.

Find out what the weather is like in a city right now. Use this for questions about the present moment — whether it is raining, how warm it is, whether someone needs a jacket before heading out. You get the conditions, temperature and what it feels like, humidity, wind, and recent precipitation, measured at the city's local time. If you need tomorrow or the days after, use get_forecast instead.