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Now · 1:56 PM

St. Onge Weather & Hourly Forecast

United States · South Dakota · 57779

71°F

Mostly sunny

Feels like: 65°F

💧 Humidity 56% 🌡 Pressure 29.94 inHg 💨 Wind 13 mph 👁 Visibility 14.9 mi ☁ Clouds 29% ☀️ UV index 5.6 · Moderate 🌅 Sunrise 6:40 AM 🌇 Sunset 6:53 PM

Hourly Forecast for St. Onge

Today

2:00 PM

Mostly sunny

71° 💧 0.003 in 💨 13 mph H 56%29.94 inHg

5:00 PM

Sunny

67° 💧 0.000 in 💨 15 mph H 63%29.91 inHg

8:00 PM

Partly cloudy night

61° 💧 None 💨 13 mph H 79%29.97 inHg

11:00 PM

Partly cloudy night

60° 💧 None 💨 9 mph H 82%29.94 inHg

Tomorrow

2:00 AM

Light rain

60° 💧 0.005 in 💨 5 mph H 84%29.91 inHg

5:00 AM

Mostly cloudy night

57° 💧 0.014 in 💨 1 mph H 87%29.88 inHg

8:00 AM

Light rain

60° 💧 0.061 in 💨 6 mph H 85%29.91 inHg

11:00 AM

Mostly cloudy

72° 💧 None 💨 3 mph H 64%29.91 inHg

2:00 PM

Strong thunderstorm

76° 💧 0.001 in 💨 4 mph H 47%29.91 inHg

5:00 PM

Mostly cloudy

73° 💧 0.002 in 💨 8 mph H 44%29.94 inHg

8:00 PM

Partly cloudy night

62° 💧 None 💨 4 mph H 72%30.03 inHg

11:00 PM

Overcast night

59° 💧 None 💨 7 mph H 76%30.09 inHg

Thursday

2:00 AM

Mostly cloudy night

56° 💧 None 💨 5 mph H 55%30.06 inHg

5:00 AM

Mostly cloudy night

52° 💧 None 💨 3 mph H 53%30.09 inHg

8:00 AM

Overcast

55° 💧 None 💨 3 mph H 58%30.12 inHg

11:00 AM

Overcast

71° 💧 None 💨 4 mph H 38%30.15 inHg

Today

2:00 PM

Mostly sunny

71° 💧 0.001 in 💨 13 mph H 56%29.94 inHg

3:00 PM

Partly cloudy

70° 💧 0.001 in 💨 15 mph H 57%29.91 inHg

4:00 PM

Mostly sunny

69° 💧 0.001 in 💨 16 mph H 59%29.91 inHg

5:00 PM

Sunny

67° 💧 0.000 in 💨 15 mph H 63%29.91 inHg

6:00 PM

Sunny

65° 💧 None 💨 14 mph H 68%29.94 inHg

7:00 PM

Mostly clear night

62° 💧 None 💨 14 mph H 74%29.94 inHg

8:00 PM

Partly cloudy night

61° 💧 None 💨 13 mph H 79%29.97 inHg

9:00 PM

Mostly cloudy night

60° 💧 None 💨 13 mph H 84%29.97 inHg

10:00 PM

Partly cloudy night

60° 💧 None 💨 11 mph H 84%29.97 inHg

11:00 PM

Partly cloudy night

60° 💧 None 💨 9 mph H 82%29.94 inHg

Tomorrow

12:00 AM

Mostly clear night

61° 💧 None 💨 8 mph H 83%29.94 inHg

1:00 AM

Mostly clear night

60° 💧 None 💨 6 mph H 83%29.91 inHg

2:00 AM

Light rain

60° 💧 0.005 in 💨 5 mph H 84%29.91 inHg

3:00 AM

Mostly clear night

59° 💧 None 💨 5 mph H 85%29.88 inHg

4:00 AM

Partly cloudy night

58° 💧 None 💨 0 mph H 85%29.88 inHg

5:00 AM

Mostly cloudy night

57° 💧 None 💨 1 mph H 87%29.88 inHg

6:00 AM

Overcast night

58° 💧 0.004 in 💨 2 mph H 85%29.91 inHg

7:00 AM

Light rain

59° 💧 0.010 in 💨 4 mph H 83%29.91 inHg

8:00 AM

Light rain

60° 💧 0.049 in 💨 6 mph H 85%29.91 inHg

9:00 AM

Light rain

66° 💧 0.006 in 💨 4 mph H 74%29.91 inHg

10:00 AM

Light rain

68° 💧 0.007 in 💨 2 mph H 72%29.91 inHg

11:00 AM

Mostly cloudy

72° 💧 None 💨 3 mph H 64%29.91 inHg

12:00 PM

Mostly cloudy

75° 💧 None 💨 4 mph H 54%29.91 inHg

1:00 PM

Strong thunderstorm

75° 💧 None 💨 5 mph H 50%29.91 inHg

2:00 PM

Strong thunderstorm

76° 💧 0.001 in 💨 4 mph H 47%29.91 inHg

3:00 PM

Overcast

78° 💧 None 💨 5 mph H 38%29.88 inHg

4:00 PM

Mostly cloudy

77° 💧 None 💨 7 mph H 37%29.91 inHg

5:00 PM

Mostly cloudy

73° 💧 0.001 in 💨 8 mph H 44%29.94 inHg

6:00 PM

Mostly cloudy

68° 💧 0.002 in 💨 7 mph H 58%29.97 inHg

7:00 PM

Clear night

64° 💧 None 💨 4 mph H 68%30.00 inHg

8:00 PM

Partly cloudy night

62° 💧 None 💨 4 mph H 72%30.03 inHg

9:00 PM

Partly cloudy night

61° 💧 None 💨 7 mph H 73%30.06 inHg

10:00 PM

Mostly cloudy night

60° 💧 None 💨 6 mph H 77%30.06 inHg

11:00 PM

Overcast night

59° 💧 None 💨 7 mph H 76%30.09 inHg

Thursday

12:00 AM

Partly cloudy night

58° 💧 None 💨 6 mph H 69%30.09 inHg

1:00 AM

Clear night

57° 💧 None 💨 6 mph H 61%30.09 inHg

2:00 AM

Mostly cloudy night

56° 💧 None 💨 5 mph H 55%30.06 inHg

3:00 AM

Mostly cloudy night

55° 💧 None 💨 3 mph H 50%30.06 inHg

4:00 AM

Partly cloudy night

53° 💧 None 💨 3 mph H 51%30.09 inHg

5:00 AM

Mostly cloudy night

52° 💧 None 💨 3 mph H 53%30.09 inHg

6:00 AM

Overcast night

51° 💧 None 💨 3 mph H 52%30.09 inHg

7:00 AM

Overcast

51° 💧 None 💨 4 mph H 54%30.09 inHg

8:00 AM

Overcast

55° 💧 None 💨 3 mph H 58%30.12 inHg

9:00 AM

Overcast

64° 💧 None 💨 2 mph H 61%30.12 inHg

10:00 AM

Overcast

69° 💧 None 💨 2 mph H 38%30.15 inHg

11:00 AM

Overcast

71° 💧 None 💨 4 mph H 38%30.15 inHg

12:00 PM

Overcast

71° 💧 None 💨 5 mph H 39%30.12 inHg

1:00 PM

Overcast

72° 💧 None 💨 6 mph H 39%30.12 inHg

2:00 PM

Overcast

72° 💧 None 💨 7 mph H 38%30.09 inHg

3:00 PM

Overcast

72° 💧 None 💨 8 mph H 39%30.09 inHg

4:00 PM

Overcast

70° 💧 None 💨 8 mph H 42%30.09 inHg

5:00 PM

Overcast

69° 💧 None 💨 7 mph H 46%30.09 inHg

6:00 PM

Overcast

65° 💧 None 💨 6 mph H 55%30.09 inHg

7:00 PM

Overcast night

61° 💧 None 💨 5 mph H 62%30.09 inHg

8:00 PM

Overcast night

60° 💧 None 💨 6 mph H 64%30.12 inHg

9:00 PM

Overcast night

59° 💧 None 💨 6 mph H 65%30.12 inHg

10:00 PM

Overcast night

58° 💧 None 💨 7 mph H 63%30.09 inHg

11:00 PM

Overcast night

57° 💧 None 💨 6 mph H 64%30.09 inHg

Friday

12:00 AM

Overcast night

56° 💧 None 💨 7 mph H 63%30.06 inHg

1:00 AM

Overcast night

56° 💧 None 💨 6 mph H 60%30.06 inHg

2:00 AM

Overcast night

56° 💧 None 💨 5 mph H 58%30.06 inHg

3:00 AM

Mostly cloudy night

55° 💧 None 💨 4 mph H 57%30.03 inHg

4:00 AM

Mostly cloudy night

53° 💧 None 💨 4 mph H 57%30.03 inHg

5:00 AM

Overcast night

52° 💧 None 💨 3 mph H 54%30.03 inHg

6:00 AM

Overcast night

53° 💧 None 💨 3 mph H 51%30.03 inHg

9:00 AM

Overcast

59° 💧 None 💨 4 mph H 55%30.00 inHg

12:00 PM

Partly cloudy

65° 💧 None 💨 9 mph H 54%29.94 inHg

3:00 PM

Sunny

70° 💧 None 💨 12 mph H 53%29.83 inHg

6:00 PM

Sunny

66° 💧 None 💨 11 mph H 62%29.77 inHg

9:00 PM

Clear night

61° 💧 None 💨 10 mph H 64%29.74 inHg

Saturday

12:00 AM

Clear night

65° 💧 None 💨 12 mph H 53%29.68 inHg

3:00 AM

Clear night

63° 💧 None 💨 9 mph H 46%29.65 inHg

6:00 AM

Clear night

64° 💧 None 💨 8 mph H 39%29.68 inHg

9:00 AM

Sunny

70° 💧 None 💨 7 mph H 40%29.77 inHg

12:00 PM

Mostly sunny

69° 💧 None 💨 9 mph H 51%29.85 inHg

3:00 PM

Mostly sunny

71° 💧 None 💨 5 mph H 44%29.83 inHg

6:00 PM

Mostly sunny

67° 💧 None 💨 4 mph H 55%29.83 inHg

9:00 PM

Clear night

58° 💧 None 💨 3 mph H 61%29.91 inHg

Sunday

12:00 AM

Mostly clear night

54° 💧 None 💨 4 mph H 69%29.97 inHg

3:00 AM

Clear night

52° 💧 None 💨 5 mph H 76%29.97 inHg

6:00 AM

Mostly clear night

53° 💧 None 💨 6 mph H 73%29.97 inHg

9:00 AM

Mostly sunny

60° 💧 None 💨 7 mph H 57%29.97 inHg

12:00 PM

Mostly sunny

66° 💧 None 💨 10 mph H 40%29.94 inHg

3:00 PM

Mostly sunny

70° 💧 None 💨 12 mph H 42%29.85 inHg

6:00 PM

Partly cloudy

65° 💧 None 💨 9 mph H 57%29.83 inHg

9:00 PM

Partly cloudy night

58° 💧 None 💨 2 mph H 78%29.88 inHg

Monday

12:00 AM

Partly cloudy night

55° 💧 None 💨 5 mph H 93%29.88 inHg

3:00 AM

Mostly cloudy night

55° 💧 None 💨 7 mph H 95%29.85 inHg

6:00 AM

Mostly cloudy night

55° 💧 None 💨 3 mph H 97%29.83 inHg

12:00 PM

Light rain

56° 💧 None 💨 7 mph H 99%29.85 inHg

6:00 PM

Light rain

52° 💧 None 💨 7 mph H 98%29.91 inHg

Tuesday

12:00 AM

Partly cloudy night

50° 💧 None 💨 2 mph H 94%29.94 inHg

6:00 AM

Partly cloudy night

46° 💧 None 💨 5 mph H 95%29.97 inHg

12:00 PM

Mostly sunny

59° 💧 None 💨 6 mph H 58%29.94 inHg

6:00 PM

Mostly sunny

59° 💧 None 💨 6 mph H 61%29.88 inHg

Wednesday

12:00 AM

Clear night

48° 💧 None 💨 1 mph H 81%29.85 inHg

6:00 AM

Mostly clear night

46° 💧 None 💨 4 mph H 88%29.80 inHg

12:00 PM

Sunny

70° 💧 None 💨 6 mph H 53%29.71 inHg

6:00 PM

Sunny

70° 💧 None 💨 4 mph H 38%29.53 inHg

Thursday

12:00 AM

Clear night

67° 💧 None 💨 14 mph H 34%29.47 inHg

6:00 AM

Mostly clear night

53° 💧 None 💨 16 mph H 70%29.62 inHg

12:00 PM

Moderate rain

46° 💧 None 💨 18 mph H 93%29.85 inHg

6:00 PM

Partly cloudy

45° 💧 None 💨 18 mph H 87%29.97 inHg

Friday

12:00 AM

Overcast night

49° 💧 None 💨 21 mph H 53%29.94 inHg

6:00 AM

Overcast night

47° 💧 None 💨 23 mph H 55%29.91 inHg

12:00 PM

Light rain

42° 💧 None 💨 22 mph H 95%30.00 inHg

6:00 PM

Overcast

46° 💧 None 💨 21 mph H 81%30.06 inHg

Saturday

12:00 AM

Light rain

45° 💧 None 💨 15 mph H 87%30.09 inHg

6:00 AM

Partly cloudy night

46° 💧 None 💨 12 mph H 81%30.12 inHg

12:00 PM

Overcast

53° 💧 None 💨 12 mph H 64%30.09 inHg

6:00 PM

Sunny

53° 💧 None 💨 2 mph H 70%30.00 inHg

Sunday

12:00 AM

Mostly clear night

42° 💧 None 💨 6 mph H 85%29.97 inHg

6:00 AM

Partly cloudy night

38° 💧 None 💨 2 mph H 68%29.91 inHg

12:00 PM

Sunny

61° 💧 None 💨 6 mph H 50%29.88 inHg

6:00 PM

Mostly cloudy

59° 💧 None 💨 11 mph H 57%29.83 inHg

Monday

12:00 AM

Overcast night

51° 💧 None 💨 8 mph H 75%29.83 inHg

6:00 AM

Overcast night

46° 💧 None 💨 9 mph H 95%29.85 inHg

12:00 PM

Overcast

53° 💧 None 💨 8 mph H 81%29.85 inHg

6:00 PM

Overcast

57° 💧 None 💨 10 mph H 69%29.80 inHg

Tuesday

12:00 AM

Overcast night

49° 💧 None 💨 11 mph H 86%29.88 inHg

6:00 AM

Light rain

45° 💧 None 💨 12 mph H 99%29.85 inHg

12:00 PM

Moderate rain

46° 💧 None 💨 13 mph H 97%29.83 inHg

6:00 PM

Light rain

44° 💧 None 💨 11 mph H 96%29.85 inHg

Wednesday

12:00 AM

Light rain

43° 💧 None 💨 6 mph H 100%29.85 inHg

6:00 AM

Moderate rain

41° 💧 None 💨 7 mph H 99%29.83 inHg

In St. Onge 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 St. Onge

TomorrowTomorrow

Light thunderstorms 78°/56° 💧 None 💨 13 mph

Thursday, Sep 24Thu Sep 24

Partly cloudy 72°/57° 💧 None 💨 9 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 71°/54° 💧 0.074 in 💨 11 mph

Saturday, Sep 26Sat Sep 26

Mostly sunny 75°/60° 💧 None 💨 14 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 72°/53° 💧 0.020 in 💨 9 mph

Monday, Sep 28Mon Sep 28

Partly cloudy 65°/54° 💧 0.181 in 💨 10 mph

Tuesday, Sep 29Tue Sep 29

Light rain 61°/55° 💧 0.661 in 💨 9 mph

Wednesday, Sep 30Wed Sep 30

Overcast 68°/46° 💧 0.013 in 💨 10 mph

Thursday, Oct 1Thu Oct 1

Sunny 67°/49° 💧 None 💨 9 mph

Friday, Oct 2Fri Oct 2

Partly cloudy 69°/53° 💧 None 💨 9 mph

Saturday, Oct 3Sat Oct 3

Moderate rain 68°/53° 💧 0.272 in 💨 15 mph

Sunday, Oct 4Sun Oct 4

Mostly sunny 59°/38° 💧 0.022 in 💨 13 mph

Monday, Oct 5Mon Oct 5

Partly cloudy 64°/42° 💧 None 💨 7 mph

Tuesday, Oct 6Tue Oct 6

Sunny 68°/51° 💧 None 💨 6 mph

Wednesday, Oct 7Wed Oct 7

Sunny 63°/63° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in St. Onge

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for St. Onge

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 2:00 PM

PM2.5 Fine particles Good 1,8µg/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 2,5µg/m³

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

O₃ Ozone Fair 66,7µg/m³

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

NO₂ Nitrogen dioxide Good 0,4µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in St. Onge

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 5,6Moderate 🙂Fair

Tomorrow UV 5,2Moderate 🙂Fair

Thursday UV 5,2Moderate 🙂Fair

Friday UV 5,4Moderate 🙂Fair

Saturday UV 5,2Moderate 🙂Fair

Sunday UV 5,0Moderate —Unavailable

Monday UV 6,0High —Unavailable

Hourly UV index today

2:00 PMUV 5,2 3:00 PMUV 3,9 4:00 PMUV 2,2 5:00 PMUV 1,0 6:00 PMUV 0,3 7:00 PMUV 0,0

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

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 St. Onge

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ST. ONGE, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

84/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:30 PM–5:05 AM

☁ Cloud cover 19% Real hourly forecast for the best viewing hour.

☾ Moonlight 89% Waxing Gibbous · Moon about 2° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 57° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min41%

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 St. Onge were last refreshed today at 1:56 PM. The current forecast period extends through 24/09/2026 at 11:00 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.