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Current weather in Watertown is overcast clouds.

Where can I find the hourly weather forecast for Watertown?

This page shows hourly weather forecast for Watertown, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Watertown updated regularly?

Weather data for Watertown is updated regularly with the latest available observations and forecasts.

Now · 12:47 AM

Watertown Weather & Hourly Forecast

United States · South Dakota · 57201

56°F

Overcast night

Feels like: 51°F

💧 Humidity 85% 🌡 Pressure 30.30 inHg 💨 Wind 10 mph 👁 Visibility 14.8 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise 7:15 AM 🌇 Sunset 7:25 PM

Hourly Forecast for Watertown

Today

1:00 AM

Overcast night

56° 💧 0.001 in 💨 10 mph H 85%30.30 inHg

4:00 AM

Clear night

54° 💧 None 💨 10 mph H 92%30.27 inHg

7:00 AM

Overcast night

53° 💧 None 💨 10 mph H 95%30.30 inHg

10:00 AM

Overcast

56° 💧 0.001 in 💨 15 mph H 87%30.30 inHg

1:00 PM

Overcast

62° 💧 None 💨 16 mph H 72%30.27 inHg

4:00 PM

Overcast

63° 💧 0.004 in 💨 17 mph H 71%30.21 inHg

7:00 PM

Light rain

61° 💧 0.045 in 💨 13 mph H 81%30.21 inHg

10:00 PM

Light rain

59° 💧 0.029 in 💨 14 mph H 88%30.21 inHg

Tomorrow

1:00 AM

Overcast night

58° 💧 0.080 in 💨 17 mph H 87%30.18 inHg

4:00 AM

Light rain

57° 💧 0.166 in 💨 15 mph H 92%30.15 inHg

7:00 AM

Overcast night

57° 💧 0.004 in 💨 14 mph H 94%30.15 inHg

10:00 AM

Overcast

60° 💧 0.001 in 💨 14 mph H 87%30.15 inHg

1:00 PM

Overcast

61° 💧 0.002 in 💨 12 mph H 86%30.15 inHg

4:00 PM

Overcast

63° 💧 None 💨 11 mph H 83%30.15 inHg

7:00 PM

Overcast

61° 💧 0.001 in 💨 8 mph H 87%30.15 inHg

10:00 PM

Overcast night

59° 💧 0.006 in 💨 8 mph H 91%30.18 inHg

Today

1:00 AM

Overcast night

56° 💧 0.001 in 💨 10 mph H 85%30.30 inHg

2:00 AM

Mostly cloudy night

56° 💧 0.000 in 💨 11 mph H 87%30.30 inHg

3:00 AM

Overcast night

56° 💧 None 💨 11 mph H 88%30.30 inHg

4:00 AM

Clear night

54° 💧 None 💨 10 mph H 92%30.27 inHg

5:00 AM

Mostly clear night

53° 💧 None 💨 10 mph H 94%30.27 inHg

6:00 AM

Partly cloudy night

53° 💧 None 💨 9 mph H 95%30.27 inHg

7:00 AM

Overcast night

53° 💧 None 💨 10 mph H 95%30.30 inHg

8:00 AM

Overcast

54° 💧 None 💨 12 mph H 91%30.30 inHg

9:00 AM

Overcast

55° 💧 None 💨 14 mph H 89%30.30 inHg

10:00 AM

Overcast

56° 💧 0.001 in 💨 15 mph H 87%30.30 inHg

11:00 AM

Overcast

58° 💧 None 💨 16 mph H 80%30.27 inHg

12:00 PM

Overcast

61° 💧 None 💨 16 mph H 75%30.27 inHg

1:00 PM

Overcast

62° 💧 None 💨 16 mph H 72%30.27 inHg

2:00 PM

Overcast

62° 💧 None 💨 16 mph H 72%30.24 inHg

3:00 PM

Overcast

62° 💧 None 💨 16 mph H 72%30.21 inHg

4:00 PM

Overcast

63° 💧 None 💨 17 mph H 71%30.21 inHg

5:00 PM

Overcast

63° 💧 None 💨 16 mph H 73%30.21 inHg

6:00 PM

Overcast

62° 💧 0.004 in 💨 14 mph H 76%30.18 inHg

7:00 PM

Light rain

61° 💧 0.016 in 💨 13 mph H 81%30.21 inHg

8:00 PM

Light thunderstorms

60° 💧 0.023 in 💨 12 mph H 86%30.21 inHg

9:00 PM

Light rain

60° 💧 0.006 in 💨 14 mph H 85%30.21 inHg

10:00 PM

Light rain

59° 💧 0.023 in 💨 14 mph H 88%30.21 inHg

11:00 PM

Light rain

58° 💧 0.006 in 💨 16 mph H 89%30.18 inHg

Tomorrow

12:00 AM

Overcast night

58° 💧 None 💨 16 mph H 88%30.18 inHg

1:00 AM

Overcast night

58° 💧 None 💨 17 mph H 87%30.18 inHg

2:00 AM

Light rain

58° 💧 0.008 in 💨 16 mph H 88%30.15 inHg

3:00 AM

Light thunderstorms

58° 💧 0.072 in 💨 16 mph H 91%30.15 inHg

4:00 AM

Light rain

57° 💧 0.086 in 💨 15 mph H 92%30.15 inHg

5:00 AM

Light rain

57° 💧 0.059 in 💨 15 mph H 93%30.15 inHg

6:00 AM

Light rain

57° 💧 0.021 in 💨 14 mph H 93%30.15 inHg

7:00 AM

Overcast night

57° 💧 0.004 in 💨 14 mph H 94%30.15 inHg

8:00 AM

Overcast

57° 💧 0.001 in 💨 14 mph H 94%30.15 inHg

9:00 AM

Overcast

58° 💧 None 💨 12 mph H 92%30.15 inHg

10:00 AM

Overcast

60° 💧 None 💨 14 mph H 87%30.15 inHg

11:00 AM

Overcast

61° 💧 None 💨 13 mph H 86%30.18 inHg

12:00 PM

Overcast

61° 💧 0.001 in 💨 13 mph H 85%30.18 inHg

1:00 PM

Overcast

61° 💧 0.002 in 💨 12 mph H 86%30.15 inHg

2:00 PM

Overcast

62° 💧 0.001 in 💨 13 mph H 83%30.15 inHg

3:00 PM

Overcast

62° 💧 None 💨 12 mph H 83%30.15 inHg

4:00 PM

Overcast

63° 💧 None 💨 11 mph H 83%30.15 inHg

5:00 PM

Overcast

62° 💧 None 💨 9 mph H 84%30.15 inHg

6:00 PM

Overcast

62° 💧 None 💨 8 mph H 85%30.15 inHg

7:00 PM

Overcast

61° 💧 None 💨 8 mph H 87%30.15 inHg

8:00 PM

Overcast night

60° 💧 None 💨 8 mph H 88%30.15 inHg

9:00 PM

Overcast night

60° 💧 0.001 in 💨 8 mph H 90%30.18 inHg

10:00 PM

Overcast night

59° 💧 0.003 in 💨 8 mph H 91%30.18 inHg

11:00 PM

Overcast night

59° 💧 0.002 in 💨 8 mph H 92%30.18 inHg

Friday

12:00 AM

Overcast night

59° 💧 0.001 in 💨 8 mph H 93%30.18 inHg

1:00 AM

Overcast night

59° 💧 None 💨 8 mph H 94%30.18 inHg

2:00 AM

Overcast night

59° 💧 None 💨 7 mph H 94%30.18 inHg

3:00 AM

Overcast night

59° 💧 0.001 in 💨 8 mph H 94%30.18 inHg

4:00 AM

Overcast night

59° 💧 None 💨 7 mph H 94%30.18 inHg

5:00 AM

Overcast night

59° 💧 0.001 in 💨 8 mph H 94%30.18 inHg

6:00 AM

Overcast night

59° 💧 0.002 in 💨 8 mph H 95%30.18 inHg

7:00 AM

Overcast night

59° 💧 0.001 in 💨 9 mph H 94%30.18 inHg

4:00 PM

Overcast

65° 💧 None 💨 15 mph H 74%30.06 inHg

7:00 PM

Overcast

62° 💧 None 💨 13 mph H 80%30.03 inHg

10:00 PM

Light rain

59° 💧 None 💨 14 mph H 92%30.00 inHg

Saturday

1:00 AM

Moderate rain

59° 💧 None 💨 15 mph H 94%29.94 inHg

4:00 AM

Light rain

59° 💧 None 💨 14 mph H 95%29.85 inHg

7:00 AM

Overcast night

60° 💧 None 💨 11 mph H 96%29.83 inHg

10:00 AM

Overcast

62° 💧 None 💨 11 mph H 97%29.83 inHg

1:00 PM

Overcast

67° 💧 None 💨 12 mph H 89%29.80 inHg

4:00 PM

Overcast

71° 💧 None 💨 9 mph H 81%29.80 inHg

7:00 PM

Mostly sunny

68° 💧 None 💨 4 mph H 93%29.83 inHg

10:00 PM

Partly cloudy night

63° 💧 None 💨 3 mph H 97%29.88 inHg

Sunday

1:00 AM

Mostly clear night

62° 💧 None 💨 3 mph H 99%29.94 inHg

4:00 AM

Clear night

58° 💧 None 💨 7 mph H 97%29.97 inHg

7:00 AM

Clear night

55° 💧 None 💨 7 mph H 81%30.00 inHg

10:00 AM

Mostly sunny

61° 💧 None 💨 8 mph H 63%30.03 inHg

1:00 PM

Sunny

67° 💧 None 💨 7 mph H 49%30.03 inHg

4:00 PM

Mostly sunny

68° 💧 None 💨 7 mph H 49%29.97 inHg

7:00 PM

Sunny

61° 💧 None 💨 6 mph H 67%29.94 inHg

10:00 PM

Mostly cloudy night

59° 💧 None 💨 8 mph H 70%29.91 inHg

Monday

1:00 AM

Overcast night

60° 💧 None 💨 10 mph H 77%29.83 inHg

4:00 AM

Heavy rain

61° 💧 None 💨 10 mph H 90%29.83 inHg

7:00 AM

Light rain

59° 💧 None 💨 6 mph H 96%29.77 inHg

10:00 AM

Light rain

56° 💧 None 💨 9 mph H 94%29.83 inHg

1:00 PM

Overcast

59° 💧 None 💨 9 mph H 79%29.83 inHg

7:00 PM

Mostly cloudy

70° 💧 None 💨 1 mph H 80%29.80 inHg

Tuesday

1:00 AM

Moderate rain

63° 💧 None 💨 8 mph H 93%29.77 inHg

7:00 AM

Overcast night

55° 💧 None 💨 12 mph H 86%29.83 inHg

1:00 PM

Overcast

53° 💧 None 💨 12 mph H 79%29.85 inHg

7:00 PM

Overcast

62° 💧 None 💨 14 mph H 44%29.88 inHg

Wednesday

1:00 AM

Mostly clear night

57° 💧 None 💨 7 mph H 58%29.88 inHg

7:00 AM

Clear night

49° 💧 None 💨 5 mph H 75%29.91 inHg

1:00 PM

Sunny

45° 💧 None 💨 4 mph H 85%29.94 inHg

7:00 PM

Sunny

63° 💧 None 💨 5 mph H 47%29.91 inHg

Thursday

1:00 AM

Clear night

57° 💧 None 💨 4 mph H 69%29.85 inHg

7:00 AM

Clear night

52° 💧 None 💨 6 mph H 82%29.85 inHg

1:00 PM

Overcast

57° 💧 None 💨 7 mph H 93%29.83 inHg

7:00 PM

Light rain

64° 💧 None 💨 12 mph H 79%29.77 inHg

Friday

1:00 AM

Overcast night

62° 💧 None 💨 8 mph H 86%29.74 inHg

7:00 AM

Partly cloudy night

54° 💧 None 💨 13 mph H 83%29.80 inHg

1:00 PM

Mostly sunny

50° 💧 None 💨 12 mph H 81%29.74 inHg

7:00 PM

Overcast

56° 💧 None 💨 18 mph H 65%29.62 inHg

Saturday

1:00 AM

Partly cloudy night

54° 💧 None 💨 3 mph H 79%29.56 inHg

7:00 AM

Light rain

52° 💧 None 💨 9 mph H 92%29.62 inHg

1:00 PM

Moderate rain

49° 💧 None 💨 21 mph H 90%29.71 inHg

7:00 PM

Overcast

50° 💧 None 💨 21 mph H 78%29.83 inHg

Sunday

1:00 AM

Overcast night

49° 💧 None 💨 17 mph H 75%29.94 inHg

7:00 AM

Overcast night

46° 💧 None 💨 11 mph H 79%30.00 inHg

1:00 PM

Mostly cloudy

42° 💧 None 💨 6 mph H 93%30.06 inHg

7:00 PM

Overcast

51° 💧 None 💨 7 mph H 65%30.06 inHg

Monday

1:00 AM

Mostly clear night

49° 💧 None 💨 4 mph H 73%30.03 inHg

7:00 AM

Partly cloudy night

44° 💧 None 💨 2 mph H 89%30.09 inHg

1:00 PM

Mostly cloudy

41° 💧 None 💨 4 mph H 92%30.12 inHg

7:00 PM

Overcast

53° 💧 None 💨 8 mph H 65%30.09 inHg

Tuesday

1:00 AM

Mostly clear night

50° 💧 None 💨 8 mph H 74%30.03 inHg

7:00 AM

Partly cloudy night

45° 💧 None 💨 7 mph H 88%30.09 inHg

1:00 PM

Mostly sunny

42° 💧 None 💨 8 mph H 93%30.09 inHg

7:00 PM

Overcast

53° 💧 None 💨 14 mph H 65%30.03 inHg

Wednesday

1:00 AM

Overcast night

51° 💧 None 💨 16 mph H 72%30.00 inHg

7:00 AM

Light rain

47° 💧 None 💨 16 mph H 93%30.03 inHg

1:00 PM

Overcast

47° 💧 None 💨 15 mph H 94%29.97 inHg

In Watertown and, more broadly, across the state of South Dakota: This morning will start with mostly cloudy skies and cool temperatures around 52 to 56 degrees Fahrenheit. Winds will be coming from the east at about 10 mph, with gusts reaching up to 17 mph. There is a possibility of light rain throughout the day, with total accumulation around 0.16 inches. As the afternoon progresses, the cloudy conditions are expected to persist, and the chance of rain remains high. Temperatures are likely to stay in the same cool range, and breezes from the east will continue at similar speeds. Overall, it will be a damp, breezy day with limited sunshine. Be prepared for possible showers if you're heading outdoors.

15-Day Weather Outlook for Watertown

Wednesday, Sep 23Wed Sep 23

Light thunderstorms 63°/53° 💧 None 💨 17 mph

TomorrowTomorrow

Light thunderstorms 63°/57° 💧 None 💨 17 mph

Friday, Sep 25Fri Sep 25

Light rain 65°/59° 💧 0.302 in 💨 15 mph

Saturday, Sep 26Sat Sep 26

Moderate rain 71°/59° 💧 0.241 in 💨 15 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 68°/55° 💧 0.004 in 💨 8 mph

Monday, Sep 28Mon Sep 28

Heavy rain 70°/56° 💧 1.046 in 💨 10 mph

Tuesday, Sep 29Tue Sep 29

Moderate rain 63°/53° 💧 1.265 in 💨 14 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 63°/45° 💧 None 💨 7 mph

Thursday, Oct 1Thu Oct 1

Light rain 64°/52° 💧 0.010 in 💨 12 mph

Friday, Oct 2Fri Oct 2

Partly cloudy 62°/50° 💧 0.141 in 💨 18 mph

Saturday, Oct 3Sat Oct 3

Moderate rain 54°/49° 💧 0.229 in 💨 21 mph

Sunday, Oct 4Sun Oct 4

Overcast 51°/42° 💧 0.018 in 💨 17 mph

Monday, Oct 5Mon Oct 5

Mostly sunny 53°/41° 💧 None 💨 8 mph

Tuesday, Oct 6Tue Oct 6

Mostly sunny 53°/42° 💧 None 💨 14 mph

Wednesday, Oct 7Wed Oct 7

Light rain 51°/47° 💧 0.112 in 💨 16 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Watertown

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Watertown

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 1:00 AM

PM2.5 Fine particles Good 1,5µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 1,7µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 51,4µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 2,0µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Watertown

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 3,1Moderate 😊Good

Tomorrow UV 1,1Low 🙂Fair

Friday UV 1,1Low 😊Good

Saturday UV 1,9Low 🙂Fair

Sunday UV 5,0Moderate —Unavailable

Monday UV 5,0Moderate —Unavailable

Tuesday UV 3,0Moderate —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,0 9:00 AMUV 0,4 10:00 AMUV 1,0 11:00 AMUV 1,9 12:00 PMUV 2,7 1:00 PMUV 2,5 2:00 PMUV 2,9 3:00 PMUV 3,1 4:00 PMUV 2,4 5:00 PMUV 1,1 6:00 PMUV 0,4

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Watertown

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · WATERTOWN, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

90/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 9:05 PM–5:38 AM

☁ Cloud cover 9% Real hourly forecast for the best viewing hour.

☾ Moonlight 89% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 58° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min68%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Watertown were last refreshed today at 12:47 AM. The current forecast period extends through 24/09/2026 at 10:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.