Watertown, SD Weather & Climate Normals
Watertown's real weather, in one number
Watertown, SD scores 40/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Watertown's hottest and coldest months
Watertown's hottest month is Jul, averaging 71°F; its coldest is Jan, averaging 12°F, a 58.7°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Watertown
Watertown averages 22.71in of precipitation a year across roughly 96 days with measurable rain or snow, and 41.1in of snow a year.
Where Watertown ranks
Watertown ranks 4515 of 4876 US cities in this dataset for comfort score, and 14 of 18 within SD. About 23,492 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from WATERTOWN RGNL AP, SD US, 0.4 miles from Watertown, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station