Answer: Sleet
Based on the information provided, it is most likely sleet. The temperature in the clouds is below freezing (-2 °C), but the temperature of the air below the clouds is above freezing (2 °C). When this type of temperature difference occurs, it can lead to the formation of sleet. Sleet is precipitation in the form of ice pellets that are generated when raindrops freeze in the sub-freezing air aloft and then fall through the above-freezing air near the surface.