Overview: GreenockGreenock (United Kingdom) is a place with a mild climate. The day temperatures range from 7 °C (44 °F) in January to 18 °C (65 °F) in July. The driest month is May with just 13 days of rain, on the contrary, the month when it rains the most is January with 19 days of rain. The highest night temperatures could be experienced in July with 11 °C (51 °F), the lowest in January with 2 °C (35 °F).