What is the average temperature for New York? The long term annual average temperature in New York State is approximately 45° across the state. Regional variations range from around 39° in the Adirondack Mountains to about 55° in New York City. The urbanization of New York City creates an urban heat island, which causes temperatures to be warmer in all seasons, especially at night. Avg Low Temp Avg High Temp Winter Temperatures Winter temperatures prevail from November through April in … Continue reading New York State Average Temperature