Maine has a humid climate (Köppen climate classification Dfb), with warm (although mostly not hot), humid summers. Winters are cold and snowy all over the state, and are mostly more severe in the northern parts of Maine. Coastal areas are moderated somewhat by the Atlantic Ocean. Daytime highs are mostly in the 75–80 °F (24–27 °C) range all over the state in July, with overnight lows in the high 50s°F (around 15 °C). January temperatures range from highs near 32 °F (0 °C) on the southern coast to overnight lows below 0 °F (−18 °C) in the far north.