South Dakota · NWS ABR office

Watertown, SD weather

It is 48°F and cloudy at Watertown, Watertown Municipal Airport as of Oct 28, 1:15 AM CDT. Overnight: Widespread Fog, low near 41°F. Forecast from the National Weather Service, issued Oct 28, 1:21 AM CDT.

Updated Oct 28, 1:30 AM CDT (snapshot)

Current conditions

Temperature

48°F

Cloudy · feels like 44°F

Wind

S 9 mph

Humidity 93% · dew point 46°F

Pressure · visibility

29.97 inHg

Visibility 9 mi

Observed at Watertown, Watertown Municipal Airport (KATY), Oct 28, 1:15 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Watertown forecast zone right now.

Around the NWS ABR forecast area

No active alerts in zones served by the ABR office near Watertown.

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. No alerts are active anywhere in South Dakota.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Watertown (local time)
TimeTempForecastPrecip. chanceWind
Wed 1 AM46°FPatchy Fog0%S 3 mph
Wed 2 AM45°FPatchy Fog0%S 5 mph
Wed 3 AM47°FPatchy Fog1%S 7 mph
Wed 4 AM47°FAreas Of Fog1%S 7 mph
Wed 5 AM47°FWidespread Fog1%S 7 mph
Wed 6 AM47°FWidespread Fog1%SSE 8 mph
Wed 7 AM47°FWidespread Fog2%SSE 8 mph
Wed 8 AM48°FWidespread Fog6%SSE 9 mph
Wed 9 AM49°FWidespread Fog19%SSE 9 mph
Wed 10 AM50°FWidespread Fog28%S 12 mph
Wed 11 AM52°FAreas Of Fog33%S 12 mph
Wed 12 PM53°FAreas Of Fog46%S 13 mph
Wed 1 PM55°FLight Rain Likely67%S 13 mph
Wed 2 PM56°FLight Rain78%SW 13 mph
Wed 3 PM55°FLight Rain Likely59%WSW 13 mph
Wed 4 PM54°FSlight Chance Light Rain24%W 12 mph
Wed 5 PM54°FMostly Cloudy12%WNW 12 mph
Wed 6 PM52°FMostly Clear5%WNW 9 mph
Wed 7 PM49°FMostly Clear1%NW 9 mph
Wed 8 PM48°FPartly Cloudy0%WNW 8 mph
Wed 9 PM46°FPartly Cloudy0%WNW 7 mph
Wed 10 PM45°FPartly Cloudy0%WNW 7 mph
Wed 11 PM44°FPartly Cloudy0%WNW 6 mph
Thu 12 AM44°FPartly Cloudy0%WNW 6 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Watertown can differ.

7-day forecast

Overnight

Low 41°F

Widespread fog. Mostly cloudy. Low around 41, with temperatures rising to around 45 overnight. South wind around 8 mph.

Wednesday

High 59°F·Low 33°F

Areas of fog before 10am, then a chance of rain and patchy fog between 10am and 1pm, then rain and patchy fog and a slight chance of thunderstorms between 1pm and 4pm. Mostly cloudy. High near 59, with temperatures falling to around 56 in the afternoon. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.

Wednesday Night: Partly cloudy. Low around 33, with temperatures rising to around 36 overnight. West northwest wind 0 to 8 mph. New rainfall amounts less than a tenth of an inch possible.

Thursday

High 56°F·Low 34°F

Mostly sunny, with a high near 56. Southeast wind 0 to 7 mph.

Thursday Night: Partly cloudy, with a low around 34. Southeast wind around 8 mph.

Friday

High 55°F·Low 36°F

Mostly sunny, with a high near 55. East wind 6 to 12 mph.

Friday Night: Mostly cloudy, with a low around 36. East wind 7 to 10 mph.

Saturday

High 57°F·Low 45°F

A chance of rain after 7am. Mostly cloudy, with a high near 57. East southeast wind 8 to 12 mph. Chance of precipitation is 30%.

Saturday Night: A slight chance of rain. Mostly cloudy, with a low around 45. Southeast wind 6 to 9 mph. Chance of precipitation is 20%.

Sunday

High 62°F·Low 46°F

A slight chance of rain before noon. Mostly cloudy, with a high near 62. Chance of precipitation is 20%.

Sunday Night: A slight chance of rain. Cloudy, with a low around 46. Chance of precipitation is 20%.

Monday

High 57°F·Low 40°F

Rain likely. Cloudy, with a high near 57. Chance of precipitation is 60%.

Monday Night: A chance of rain. Cloudy, with a low around 40. Chance of precipitation is 50%.

Tuesday

High 53°F

A chance of rain. Mostly cloudy, with a high near 53. Chance of precipitation is 30%.

Nearby cities

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About this forecast

Forecast office
Watertown is served by the National Weather Service ABR forecast office, forecast zone SDZ020, county zone SDC029.
Location used
The Census Bureau's internal point for Watertown (44.9092, -97.1557), in Codington County. Population: 23,492 (2024 estimate), number 5 of the 5 South Dakota cities on this site.
Radar
Nearest NWS radar: KABR. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/44.9092,-97.1557 (forecast issued Oct 28, 1:21 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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