Annual mean
Annual mean of daily highs
Annual mean of daily lows
Watertown city, South Dakota
Official LSAD Designation: Watertown city • Census GEOID: 4669300
• Codington County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Watertown city.
Reference Weather Station: WATERTOWN RGNL AP, SD US (ID: USW00014946)
• Located 0.4 miles from community center
• Elevation: 532.8 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 21.4° | 3.1° | 12.2° | 0.58" |
| February | 25.9° | 6.7° | 16.3° | 0.65" |
| March | 38.6° | 19.6° | 29.1° | 1.00" |
| April | 54.0° | 31.5° | 42.8° | 2.06" |
| May | 66.9° | 44.5° | 55.7° | 2.87" |
| June | 76.8° | 55.4° | 66.1° | 3.85" |
| July | 82.0° | 60.0° | 71.0° | 3.05" |
| August | 79.5° | 57.5° | 68.5° | 2.89" |
| September | 71.6° | 48.6° | 60.1° | 2.45" |
| October | 56.2° | 35.2° | 45.7° | 1.95" |
| November | 39.8° | 21.3° | 30.6° | 0.68" |
| December | 26.3° | 9.3° | 17.8° | 0.68" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station WATERTOWN RGNL AP, SD US (ID: USW00014946) • 0.4 miles from community center .
This is the same reference station used for monthly normals.
Source: NOAA NCEI Global Summary of the Year.
Annual temperature data table (°F)
| Year | Annual mean (°F) | Annual mean of daily highs (°F) | Annual mean of daily lows (°F) |
|---|---|---|---|
| 2010 | 43.1 | 52.9 | 33.4 |
| 2011 | 42.2 | 52.4 | 31.9 |
| 2012 | 46.7 | 58.0 | 35.4 |
| 2013 | 40.8 | 50.7 | 30.8 |
| 2014 | 40.6 | 50.9 | 30.2 |
| 2015 | 45.9 | 56.5 | 35.2 |
| 2016 | 46.9 | 57.2 | 36.6 |
| 2017 | 44.2 | 54.6 | 33.9 |
| 2018 | 42.0 | 51.7 | 32.2 |
| 2019 | 40.4 | 49.5 | 31.3 |
| 2020 | 44.1 | 54.8 | 33.5 |
| 2021 | 45.8 | 56.5 | 35.1 |
| 2022 | 42.5 | 53.3 | 31.7 |
| 2023 | 45.1 | 55.7 | 34.4 |
| 2024 | 46.5 | 56.7 | 36.2 |
| 2025 | 44.9 | 55.7 | 34.1 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.