Watertown, South Dakota is starting the day with foggy conditions, typical for this time of year, but these are expected to partially clear as the day progresses. The high temperature is forecasted to be 52°F (11°C), with winds from the south-southwest at 10 to 20 mph. As night falls, the skies will become overcast, and patchy fog will develop again, with a low temperature around 32°F (0°C) and winds shifting to the south-southeast at 10 to 15 mph.