The 10-day weather forecast for Oswego, New York, is expected to remain largely cloudy with periods of rain throughout the day, with a 100% chance of rain, with rain expected to fall around a quarter of an inch. The weather will also be colder, with temperatures reaching 53F. The forecast also includes rain showers early on, mixed rain and snow later on the night. The National Weather Service has issued a weather outlook for the next 10 days.