Temperature, rain, warnings and maps. Web☁ syracuse new york united states 15 day weather forecast. Today syracuse new york united states: Overcast with a temperature of 19°c and a wind west speed of 2 km/h. Syracuse hancock international airport, usa). Daily temperature and precipitation predictions based on advanced long range model. Slight chance of a rain shower. Winds wnw at 10 to 15 mph. Winds light and variable. Webknow what's coming with accuweather's extended daily forecasts for syracuse, ny. Up to 90 days of daily highs, lows, and precipitation chances.