CASTLE ROCK, SOUTH DAKOTA

This climate type occurs primarily on the periphery of the true deserts in low-latitude semiarid steppe regions. It is transitional to the tropical wet-dry climate on the equatorward side and to the mediterranean climate on its poleward margin, with a cooler, wetter winter resulting from the higher latitude and mid-latitude frontal cyclone activity. Annual precipitation totals are greater than in tropical and subtropical desert climates. Yearly variations in amount are not as extreme as in the true deserts but are nevertheless large.

The Köppen Climate Classification subtype for this climate is "BSk". (Tropical and Subtropical Steppe Climate).

The average temperature for the year in Castle Rock is 43.5°F (6.4°C). The warmest month, on average, is July with an average temperature of 71.1°F (21.7°C). The coolest month on average is January, with an average temperature of 15.0°F (-9.4°C).

The highest recorded temperature in Castle Rock is 107.0°F (41.7°C), which was recorded in July. The lowest recorded temperature in Castle Rock is -35.0°F (-37.2°C), which was recorded in January.

The average amount of precipitation for the year in Castle Rock is 13.8" (350.5 mm). The month with the most precipitation on average is June with 3.7" (94 mm) of precipitation. The month with the least precipitation on average is January with an average of 0.2" (5.1 mm). There are an average of 86.0 days of precipitation, with the most precipitation occurring in June with 15.0 days and the least precipitation occurring in October with 4.0 days.

In Castle Rock, there's an average of 29.3" of snow (0 cm). The month with the most snow is March, with 6.0" of snow (15.2 cm).