Climate Oswego's midwinter daytime temperatures average 0' degrees Celsius, with January being the coldest month. The midsummer daytime mean temperature is 26' degrees Celsius, with July being the warmest month. Oswego receives 93 cm of precipitation each year. Click for current weather conditions . Clothing Needs Student dress is casual at SUNY Oswego.
Men generally wear jeans with sweaters or sports shirts.
They may wish to bring a suit or blazer jacket and dress slacks for formal occasions. Women also wear jeans with sweaters or blouses. Skirts and dresses may be appropriate during warmer weather. Both genders tend to wear shorts or much lighter clothing in the summer. Colder temperatures from December to March make it advisable for students purchase winter clothing after their arrival in Oswego.