Watertown (SD) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Watertown.
Climate overview of Watertown
Temperatures in Watertown, South Dakota, United States of America, vary greatly throughout the year. July is the hottest month at 28°C (82°F), while January is the coldest at -5°C (23°F).
With around 577 mm (23 in) of annual rain/snowfall, the city has moderate precipitation levels. June is the wettest month and November the driest. It also has a distinct dry season from November to March, with warm summers and very cold winters.
Watertown Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Watertown - and find the best time to visit.
Monthly Temperature in Watertown
The climate in Watertown is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 28°C (82°F) in July to a very cold -5°C (23°F) in the coolest month, January.
Nights vary from 16°C (61°F) in July to around -16°C (3°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Watertown
Generally, Watertown receives mid-range precipitation levels, with 577 mm (23 in) annually. The climate in Watertown shows significant variation throughout the year. Expect moderate rainfall in June, the wettest month, with an average of 92 mm (3.6 in) of precipitation over 11 rainy days.
In contrast, the driest month November offers drier and sunnier days, with around 9.6 mm (0.4 in) of snow/rainfall over 4 snowy/rainy days. For more details, please visit our Watertown Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Watertown
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Fewest rainy days: January, February and November
- Seasonal pattern: A distinct dry season from November to March, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -16°C (3°F).
Frequently asked questions about the climate in Watertown
What is the best time to visit Watertown?
June, July, August and September typically offer the most optimal weather in Watertown. In contrast, January, February, March and December tend to have less optimal conditions. Watertown has a distinct dry season from November to March, with warm summers and very cold winters.
What temperatures can I expect in Watertown?
Daytime highs range from -5°C (23°F) in January to 28°C (82°F) in July. Nighttime lows range from -16°C (3°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Watertown get?
Annual rainfall is around 577 mm (23 in). June is the wettest month with 92 mm (3.6 in), while November is the driest with 9.6 mm (0.4 in).
Watertown 3-Day Forecast
Watertown (SD) 3-Day Forecast
Watertown on the map
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