With a population of around 1,100, De Smet sits in South Dakota, United States. The city operates in the Central Time Zone.
In 2025, De Smet averaged an annual temperature of 47°F, with hottest temperatures reaching 95°F in June and lowest around -20°F in February. The city received approximately 28 inches of precipitation during the year.
View historical weather for De Smet · More cities in South Dakota