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Current weather in Onaka is broken clouds.

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

Now · 8:41 AM

Onaka Weather & Hourly Forecast

United States · South Dakota · 57466

50°F

Mostly cloudy

Feels like: 46°F

💧 Humidity 95% 🌡 Pressure 30.30 inHg 💨 Wind 7 mph 👁 Visibility 14.7 mi ☁ Clouds 78% ☀️ UV index 0.0 · Low 🌅 Sunrise 7:23 AM 🌇 Sunset 7:37 PM

Hourly Forecast for Onaka

Today

9:00 AM

Mostly cloudy

50° 💧 0.000 in 💨 7 mph H 95%30.30 inHg

12:00 PM

Overcast

59° 💧 0.007 in 💨 12 mph H 71%30.24 inHg

3:00 PM

Overcast

61° 💧 0.007 in 💨 14 mph H 67%30.18 inHg

6:00 PM

Overcast

61° 💧 0.002 in 💨 14 mph H 74%30.18 inHg

9:00 PM

Clear night

56° 💧 None 💨 12 mph H 89%30.18 inHg

Tomorrow

12:00 AM

Overcast night

55° 💧 None 💨 13 mph H 89%30.21 inHg

3:00 AM

Mostly cloudy night

56° 💧 0.002 in 💨 14 mph H 88%30.18 inHg

6:00 AM

Overcast night

56° 💧 0.004 in 💨 14 mph H 91%30.18 inHg

9:00 AM

Overcast

56° 💧 0.001 in 💨 15 mph H 92%30.15 inHg

12:00 PM

Overcast

61° 💧 0.001 in 💨 18 mph H 84%30.15 inHg

3:00 PM

Overcast

65° 💧 0.014 in 💨 19 mph H 76%30.09 inHg

6:00 PM

Light rain

63° 💧 0.056 in 💨 16 mph H 86%30.06 inHg

9:00 PM

Mostly cloudy night

61° 💧 0.001 in 💨 16 mph H 89%30.06 inHg

Thursday

12:00 AM

Light rain

62° 💧 0.013 in 💨 17 mph H 88%30.03 inHg

3:00 AM

Mostly clear night

61° 💧 None 💨 10 mph H 93%30.03 inHg

6:00 AM

Clear night

59° 💧 None 💨 6 mph H 96%30.06 inHg

Today

9:00 AM

Mostly cloudy

50° 💧 None 💨 7 mph H 95%30.30 inHg

10:00 AM

Mostly cloudy

54° 💧 0.000 in 💨 8 mph H 86%30.27 inHg

11:00 AM

Overcast

57° 💧 0.000 in 💨 10 mph H 77%30.27 inHg

12:00 PM

Overcast

59° 💧 0.001 in 💨 12 mph H 71%30.24 inHg

1:00 PM

Overcast

60° 💧 0.003 in 💨 13 mph H 69%30.24 inHg

2:00 PM

Overcast

61° 💧 0.003 in 💨 14 mph H 67%30.21 inHg

3:00 PM

Overcast

61° 💧 0.002 in 💨 14 mph H 67%30.18 inHg

4:00 PM

Overcast

61° 💧 0.003 in 💨 14 mph H 70%30.18 inHg

5:00 PM

Mostly cloudy

62° 💧 0.002 in 💨 14 mph H 71%30.18 inHg

6:00 PM

Overcast

61° 💧 0.001 in 💨 14 mph H 74%30.18 inHg

7:00 PM

Partly cloudy

59° 💧 0.000 in 💨 12 mph H 79%30.18 inHg

8:00 PM

Partly cloudy night

57° 💧 0.000 in 💨 12 mph H 84%30.18 inHg

9:00 PM

Clear night

56° 💧 None 💨 12 mph H 89%30.18 inHg

10:00 PM

Mostly cloudy night

55° 💧 None 💨 12 mph H 91%30.21 inHg

11:00 PM

Mostly clear night

55° 💧 None 💨 13 mph H 91%30.21 inHg

Tomorrow

12:00 AM

Overcast night

55° 💧 None 💨 13 mph H 89%30.21 inHg

1:00 AM

Overcast night

55° 💧 None 💨 13 mph H 89%30.21 inHg

2:00 AM

Overcast night

56° 💧 None 💨 14 mph H 88%30.18 inHg

3:00 AM

Mostly cloudy night

56° 💧 None 💨 14 mph H 88%30.18 inHg

4:00 AM

Overcast night

55° 💧 0.001 in 💨 14 mph H 91%30.18 inHg

5:00 AM

Overcast night

56° 💧 0.001 in 💨 14 mph H 90%30.18 inHg

6:00 AM

Overcast night

56° 💧 0.001 in 💨 14 mph H 91%30.18 inHg

7:00 AM

Overcast night

56° 💧 0.001 in 💨 14 mph H 92%30.18 inHg

8:00 AM

Overcast

56° 💧 0.001 in 💨 14 mph H 92%30.18 inHg

9:00 AM

Overcast

56° 💧 None 💨 15 mph H 92%30.15 inHg

10:00 AM

Overcast

58° 💧 None 💨 16 mph H 90%30.15 inHg

11:00 AM

Overcast

59° 💧 0.001 in 💨 17 mph H 87%30.15 inHg

12:00 PM

Overcast

61° 💧 0.001 in 💨 18 mph H 84%30.15 inHg

1:00 PM

Overcast

63° 💧 None 💨 19 mph H 79%30.12 inHg

2:00 PM

Overcast

64° 💧 0.001 in 💨 20 mph H 77%30.09 inHg

3:00 PM

Overcast

65° 💧 0.002 in 💨 19 mph H 76%30.09 inHg

4:00 PM

Overcast

65° 💧 0.002 in 💨 16 mph H 77%30.09 inHg

5:00 PM

Light rain

64° 💧 0.010 in 💨 16 mph H 82%30.09 inHg

6:00 PM

Light rain

63° 💧 0.025 in 💨 16 mph H 86%30.06 inHg

7:00 PM

Light rain

62° 💧 0.015 in 💨 18 mph H 87%30.06 inHg

8:00 PM

Light rain

62° 💧 0.017 in 💨 17 mph H 90%30.06 inHg

9:00 PM

Mostly cloudy night

61° 💧 0.001 in 💨 16 mph H 89%30.06 inHg

10:00 PM

Overcast night

62° 💧 None 💨 17 mph H 87%30.06 inHg

11:00 PM

Overcast night

62° 💧 0.001 in 💨 18 mph H 86%30.06 inHg

Thursday

12:00 AM

Light rain

62° 💧 0.010 in 💨 17 mph H 88%30.03 inHg

1:00 AM

Partly cloudy night

61° 💧 0.002 in 💨 14 mph H 89%30.03 inHg

2:00 AM

Mostly clear night

61° 💧 None 💨 12 mph H 91%30.03 inHg

3:00 AM

Mostly clear night

61° 💧 None 💨 10 mph H 93%30.03 inHg

4:00 AM

Mostly clear night

60° 💧 None 💨 7 mph H 95%30.06 inHg

5:00 AM

Partly cloudy night

59° 💧 None 💨 7 mph H 96%30.06 inHg

6:00 AM

Clear night

59° 💧 None 💨 6 mph H 96%30.06 inHg

7:00 AM

Clear night

58° 💧 None 💨 7 mph H 96%30.09 inHg

8:00 AM

Mostly sunny

57° 💧 None 💨 6 mph H 96%30.09 inHg

9:00 AM

Overcast

60° 💧 None 💨 9 mph H 94%30.12 inHg

10:00 AM

Overcast

61° 💧 None 💨 9 mph H 93%30.12 inHg

11:00 AM

Overcast

61° 💧 0.001 in 💨 7 mph H 92%30.15 inHg

12:00 PM

Overcast

64° 💧 0.002 in 💨 8 mph H 85%30.12 inHg

1:00 PM

Light rain

66° 💧 0.005 in 💨 7 mph H 79%30.12 inHg

2:00 PM

Overcast

68° 💧 0.004 in 💨 7 mph H 74%30.12 inHg

3:00 PM

Overcast

69° 💧 0.001 in 💨 7 mph H 71%30.12 inHg

4:00 PM

Overcast

70° 💧 0.001 in 💨 7 mph H 68%30.12 inHg

5:00 PM

Overcast

70° 💧 None 💨 7 mph H 66%30.12 inHg

6:00 PM

Mostly cloudy

70° 💧 None 💨 7 mph H 66%30.12 inHg

7:00 PM

Mostly cloudy

67° 💧 None 💨 4 mph H 76%30.12 inHg

Friday

4:00 AM

Moderate rain

60° 💧 None 💨 7 mph H 98%30.12 inHg

7:00 AM

Overcast night

59° 💧 None 💨 10 mph H 100%30.12 inHg

10:00 AM

Overcast

60° 💧 None 💨 10 mph H 97%30.12 inHg

1:00 PM

Overcast

62° 💧 None 💨 13 mph H 87%30.06 inHg

4:00 PM

Light rain

62° 💧 None 💨 15 mph H 85%30.00 inHg

7:00 PM

Light rain

60° 💧 None 💨 15 mph H 95%29.94 inHg

10:00 PM

Light rain

60° 💧 None 💨 13 mph H 96%29.91 inHg

Saturday

1:00 AM

Light rain

60° 💧 None 💨 10 mph H 98%29.85 inHg

4:00 AM

Overcast night

61° 💧 None 💨 9 mph H 99%29.80 inHg

7:00 AM

Overcast night

62° 💧 None 💨 8 mph H 100%29.80 inHg

10:00 AM

Overcast

66° 💧 None 💨 11 mph H 94%29.80 inHg

1:00 PM

Sunny

75° 💧 None 💨 9 mph H 71%29.77 inHg

4:00 PM

Sunny

78° 💧 None 💨 5 mph H 66%29.74 inHg

7:00 PM

Mostly sunny

73° 💧 None 💨 3 mph H 82%29.80 inHg

10:00 PM

Clear night

66° 💧 None 💨 7 mph H 89%29.85 inHg

Sunday

1:00 AM

Mostly clear night

63° 💧 None 💨 5 mph H 92%29.88 inHg

4:00 AM

Mostly clear night

60° 💧 None 💨 6 mph H 92%29.91 inHg

7:00 AM

Mostly cloudy night

59° 💧 None 💨 9 mph H 77%29.94 inHg

10:00 AM

Partly cloudy

64° 💧 None 💨 11 mph H 57%29.97 inHg

1:00 PM

Overcast

66° 💧 None 💨 8 mph H 63%29.97 inHg

4:00 PM

Overcast

72° 💧 None 💨 7 mph H 70%29.91 inHg

7:00 PM

Overcast

70° 💧 None 💨 6 mph H 82%29.88 inHg

10:00 PM

Mostly clear night

65° 💧 None 💨 6 mph H 95%29.88 inHg

Monday

1:00 AM

Partly cloudy night

64° 💧 None 💨 7 mph H 99%29.83 inHg

7:00 AM

Light rain

64° 💧 None 💨 8 mph H 98%29.91 inHg

1:00 PM

Overcast

60° 💧 None 💨 12 mph H 95%29.88 inHg

7:00 PM

Mostly cloudy

68° 💧 None 💨 9 mph H 73%29.91 inHg

Tuesday

1:00 AM

Mostly clear night

66° 💧 None 💨 8 mph H 80%29.88 inHg

7:00 AM

Moderate rain

58° 💧 None 💨 12 mph H 84%29.91 inHg

1:00 PM

Light rain

55° 💧 None 💨 13 mph H 94%29.88 inHg

7:00 PM

Light rain

57° 💧 None 💨 11 mph H 93%29.91 inHg

Wednesday

1:00 AM

Overcast night

59° 💧 None 💨 9 mph H 95%29.88 inHg

7:00 AM

Overcast night

57° 💧 None 💨 6 mph H 96%29.94 inHg

1:00 PM

Overcast

58° 💧 None 💨 6 mph H 98%29.94 inHg

7:00 PM

Overcast

64° 💧 None 💨 8 mph H 79%29.94 inHg

Thursday

1:00 AM

Overcast night

64° 💧 None 💨 6 mph H 84%29.91 inHg

7:00 AM

Mostly cloudy night

60° 💧 None 💨 5 mph H 95%29.94 inHg

1:00 PM

Overcast

59° 💧 None 💨 3 mph H 99%29.94 inHg

7:00 PM

Overcast

65° 💧 None 💨 8 mph H 84%29.91 inHg

Friday

1:00 AM

Mostly cloudy night

65° 💧 None 💨 8 mph H 83%29.85 inHg

7:00 AM

Clear night

60° 💧 None 💨 6 mph H 97%29.88 inHg

1:00 PM

Overcast

58° 💧 None 💨 7 mph H 99%29.88 inHg

7:00 PM

Overcast

73° 💧 None 💨 10 mph H 73%29.85 inHg

Saturday

1:00 AM

Mostly clear night

71° 💧 None 💨 10 mph H 72%29.80 inHg

7:00 AM

Partly cloudy night

64° 💧 None 💨 10 mph H 94%29.80 inHg

1:00 PM

Mostly cloudy

65° 💧 None 💨 12 mph H 94%29.74 inHg

7:00 PM

Mostly cloudy

75° 💧 None 💨 13 mph H 66%29.71 inHg

Sunday

1:00 AM

Partly cloudy night

67° 💧 None 💨 18 mph H 65%29.88 inHg

7:00 AM

Clear night

54° 💧 None 💨 18 mph H 56%30.09 inHg

1:00 PM

Sunny

48° 💧 None 💨 15 mph H 72%30.27 inHg

7:00 PM

Sunny

57° 💧 None 💨 10 mph H 51%30.33 inHg

Monday

1:00 AM

Clear night

55° 💧 None 💨 1 mph H 61%30.27 inHg

7:00 AM

Overcast night

45° 💧 None 💨 4 mph H 83%30.27 inHg

1:00 PM

Sunny

44° 💧 None 💨 9 mph H 83%30.24 inHg

7:00 PM

Sunny

59° 💧 None 💨 15 mph H 54%30.15 inHg

Tuesday

1:00 AM

Overcast night

58° 💧 None 💨 9 mph H 61%30.06 inHg

7:00 AM

Clear night

51° 💧 None 💨 6 mph H 78%30.06 inHg

1:00 PM

Sunny

49° 💧 None 💨 7 mph H 89%30.09 inHg

7:00 PM

Sunny

66° 💧 None 💨 7 mph H 53%30.15 inHg

Wednesday

1:00 AM

Mostly clear night

61° 💧 None 💨 2 mph H 66%30.12 inHg

In Onaka 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 Onaka

TomorrowTomorrow

Overcast 65°/55° 💧 None 💨 20 mph

Thursday, Sep 24Thu Sep 24

Light rain 70°/57° 💧 0.121 in 💨 17 mph

Friday, Sep 25Fri Sep 25

Light rain 62°/58° 💧 0.180 in 💨 16 mph

Saturday, Sep 26Sat Sep 26

Light rain 78°/62° 💧 0.025 in 💨 15 mph

Sunday, Sep 27Sun Sep 27

Overcast 71°/61° 💧 0.008 in 💨 10 mph

Monday, Sep 28Mon Sep 28

Light rain 68°/60° 💧 0.257 in 💨 12 mph

Tuesday, Sep 29Tue Sep 29

Moderate rain 59°/55° 💧 0.690 in 💨 13 mph

Wednesday, Sep 30Wed Sep 30

Overcast 64°/57° 💧 0.026 in 💨 8 mph

Thursday, Oct 1Thu Oct 1

Overcast 65°/59° 💧 0.013 in 💨 8 mph

Friday, Oct 2Fri Oct 2

Overcast 73°/58° 💧 None 💨 10 mph

Saturday, Oct 3Sat Oct 3

Partly cloudy 75°/64° 💧 0.013 in 💨 18 mph

Sunday, Oct 4Sun Oct 4

Sunny 57°/48° 💧 None 💨 18 mph

Monday, Oct 5Mon Oct 5

Overcast 59°/44° 💧 None 💨 15 mph

Tuesday, Oct 6Tue Oct 6

Mostly sunny 66°/49° 💧 None 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Onaka

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Onaka

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 9:00 AM

PM2.5 Fine particles Good 0,8µg/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 0,9µg/m³

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

O₃ Ozone Good 35,2µg/m³

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

NO₂ Nitrogen dioxide Good 2,2µg/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 Onaka

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 2,1Low 😊Good

Tomorrow UV 1,6Low 😊Good

Thursday UV 2,2Low 🙂Fair

Friday UV 2,6Low 😊Good

Saturday UV 6,0High 😊Good

Sunday UV 6,0High —Unavailable

Monday UV 6,0High —Unavailable

Hourly UV index today

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

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

Low UV risk

UV radiation will be low, although basic protection is still advisable during 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 Onaka

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ONAKA, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 9:00 PM–10:00 PM.

88/100Best-hour score

BEST TIME TONIGHT 9:00 PM–10:00 PM Astronomical darkness: 9:14 PM–5:47 AM

☁ Cloud cover 6% Real hourly forecast for the best viewing hour.

☾ Moonlight 87% Waxing Gibbous · Moon about 23° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant -9° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min5%

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 Onaka were last refreshed today at 8:41 AM. The current forecast period extends through 24/09/2026 at 6:00 AM. 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.