Watertown, SD has a longitude of -97.2 degrees and a latitude of 44.9 degrees.
Watertown, SD has temperatures that can go as high as 77.0 °F in June, 82.4 °F in July, and 80.7 °F in August. The hottest month is typically July.
Watertown, SD also has temperatures that can go as low as 8.6 °F in December, 5.0 °F in January, and 8.6 °F in February. The coldest month is typically January.
The wettest month for Watertown, SD is August with 8.0 inches of rain.
The annual weather and monthly temperature averages for highs and lows are presented in the table below. The weather values used to interpolate these values are provided by the US NAOO weather station values from the last 10 years.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Average High (°F) | 21.2 | 26.6 | 39.2 | 55.4 | 68.0 | 77.0 | 82.4 | 80.7 | 71.6 | 57.2 | 39.2 | 24.8 |
| Average Low (°F) | 5.0 | 8.6 | 19.4 | 32.0 | 44.6 | 55.4 | 60.8 | 57.2 | 48.2 | 33.8 | 21.2 | 8.6 |
| Average Precipitation (in) | 1.0 | 2.0 | 3.0 | 6.0 | 7.0 | 7.0 | 6.0 | 8.0 | 8.0 | 6.0 | 1.0 | 2.0 |
South Dakota has a continental climate with four distinct seasons, ranging from cold, dry winters to warm and semi-humid summers. It is not unusual for South Dakota to have severe hot, dry spells in the summer. Average annual precipitation in South Dakota ranges from semi-arid conditions in the northwestern part of the state (around 15 inches or 380 mm) to semi-humid around the southeast portion of the state (around 25 inches or 640 mm). South Dakota summers bring frequent, sometimes severe, thunderstorms with high winds, thunder, and hail.
In reality, each climate is unique and finding one that is suitable can be a real challenge! We hope that the information here can be the starting point of your weather and climate research for your next vacation or potentially next home.
We hope you use this information to make your travel plans to Watertown, SD or decide if living in the Watertown climate is the right choice for you!