Lake Sinai, SD has a typically continental climate, characterized by cold, dry winters and warm, humid summers. The average temperature in the summer is around 75°F (24°C), while winter temperatures can drop to around 21°F (-6°C). During the spring and fall months, temperatures range between 40-60°F (5-16°C). Precipitation is fairly uniform throughout the year with an average of about 12 inches (30 cm) per year. Snowfall typically arrives in late November and continues through early March each year.
Lake Sinai, South Dakota gets 26 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Lake Sinai averages 39 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 208 sunny days per year in Lake Sinai. The US average is 205 sunny days.
Lake Sinai gets some kind of precipitation, on average, 83 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 83 degrees
Winter Low: the January low is 5
Rain: averages 26 inches of rain a year
Snow: averages 39 inches of snow a year