Watertown, SD
Climate overview — based on NOAA 1991-2020 normals from WATERTOWN RGNL AP, SD US.
Year-round temperatures (°F)
Climate summary
Watertown has an annual average temperature of 43°F with about 22.7 inches of precipitation per year and 41.1 inches of snow. The warmest month is July (average high 82.0°F), and the coldest is January (average low 3.1°F). June is typically the wettest month (3.85 in) and January the driest (0.58 in). Snow typically falls from October through April.
Best time to visit Watertown
Full guide →Climate change signal
All-time records →24 of 366 (6.6%) of Watertown's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1890s | 18 | |
| 1900s | 9 | |
| 1910s | 28 | |
| 1920s | 25 | |
| 1930s | 108 | |
| 1940s | 23 | |
| 1950s | 19 | |
| 1960s | 16 | |
| 1970s | 16 | |
| 1980s | 36 | |
| 1990s | 20 | |
| 2000s | 17 | |
| 2010s | 13 | |
| 2020s | 18 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 21.4°F | 3.1°F | 12.2°F | 0.58 in | 6.7 in | 6 |
| February | 25.9°F | 6.7°F | 16.3°F | 0.65 in | 8.9 in | 6 |
| March | 38.6°F | 19.6°F | 29.1°F | 1.00 in | 5.4 in | 7 |
| April | 54.0°F | 31.5°F | 42.8°F | 2.06 in | 5.2 in | 9 |
| May | 66.9°F | 44.5°F | 55.7°F | 2.87 in | 0.1 in | 11 |
| June | 76.8°F | 55.4°F | 66.1°F | 3.85 in | — | 11 |
| July | 82.0°F | 60.0°F | 71.0°F | 3.05 in | — | 10 |
| August | 79.5°F | 57.5°F | 68.5°F | 2.89 in | — | 9 |
| September | 71.6°F | 48.6°F | 60.1°F | 2.45 in | — | 9 |
| October | 56.2°F | 35.2°F | 45.7°F | 1.95 in | 1.4 in | 8 |
| November | 39.8°F | 21.3°F | 30.6°F | 0.68 in | 4.5 in | 5 |
| December | 26.3°F | 9.3°F | 17.8°F | 0.68 in | 8.9 in | 6 |
Climate twins of Watertown
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).