The Port of Arlington has a form Mediterranean climate with warm dry summers and mild rainy winters. Temperatures in the Port of Arlington range from an average high of about 25°C (78°F) in July and August to an average low of about -5°C (22°F) in December and January. The Port of Arlington gets little rain. The driest month is July, when rainfall is negligible. Precipitation is greatest in December and January at almost four centimeters (1.5 inches). Humidity levels are lowest in the summer, falling to 60% in July, and highest from November through January at a little over 80%. Snow comes to the Port of Arlington from October through early April, and the Port of Arlington gets over 18 centimeters (7 inches) of snow in January.