The climate is usually dry; however, Yellow Grass receives enough precipitation in the warmer half of the year to be classified as a humid continental climate (Dfb). The winter usually results in very cold temperatures that reach into the −20s to −30s degrees Celsius, while the summer produces relatively hot, dry temperatures. On average the temperature exceeds 2.4 times per year. The highest recorded temperature in Canadian history was set on July 5, 1937 when the temperature reached at both Yellow Grass and at Midale, Saskatchewan, which is located 64 kilometres southeast of Yellow Grass. The mean temperature for July is and January is . Extreme high and low temperatures in Yellow Grass have ranged from in July 1937 to in January 1916.