Average temperature in Keystone (SD)
The mean minimum and maximum temperatures over the year in Keystone (South Dakota), the United States of America.
- The months of June, July, August and September have nice average temperatures.
- On average, the warmest month is July with 28°C.
- On average, the coolest month is February with 3°C.
- The average annual maximum temperature is 14°C.
- The average annual minimum temperature is 1°C.
Forecast for Keystone (SD)
broken clouds and rain
overcast and rain
partly cloudy and no rain