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Current weather in Chelsea is clear sky.

Where can I find the hourly weather forecast for Chelsea?

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

Is the weather forecast for Chelsea updated regularly?

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

Now · 5:09 PM

Chelsea Weather & Hourly Forecast

United States · South Dakota · 57465

85°F

Sunny

Feels like: 75°F

💧 Humidity 23% 🌡 Pressure 29.88 inHg 💨 Wind 14 mph 👁 Visibility 34.0 mi ☁ Clouds 0% ☀️ UV index 2.3 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Chelsea

Today

6:00 PM

Sunny

83° 💧 None 💨 14 mph H 25%29.88 inHg

9:00 PM

Clear night

72° 💧 None 💨 5 mph H 45%29.94 inHg

Tomorrow

12:00 AM

Clear night

66° 💧 None 💨 3 mph H 63%29.97 inHg

3:00 AM

Mostly cloudy night

64° 💧 None 💨 7 mph H 68%30.00 inHg

6:00 AM

Mostly cloudy night

64° 💧 0.001 in 💨 7 mph H 65%30.03 inHg

9:00 AM

Sunny

67° 💧 None 💨 12 mph H 59%30.09 inHg

12:00 PM

Sunny

73° 💧 None 💨 12 mph H 45%30.12 inHg

3:00 PM

Sunny

78° 💧 None 💨 12 mph H 34%30.06 inHg

6:00 PM

Sunny

78° 💧 None 💨 10 mph H 31%30.00 inHg

9:00 PM

Clear night

69° 💧 None 💨 4 mph H 47%30.03 inHg

Thursday

12:00 AM

Mostly cloudy night

64° 💧 None 💨 3 mph H 60%30.03 inHg

3:00 AM

Clear night

61° 💧 None 💨 5 mph H 64%30.00 inHg

6:00 AM

Clear night

61° 💧 None 💨 5 mph H 60%29.97 inHg

9:00 AM

Sunny

66° 💧 None 💨 4 mph H 52%29.97 inHg

12:00 PM

Sunny

81° 💧 None 💨 11 mph H 35%29.91 inHg

3:00 PM

Sunny

88° 💧 None 💨 12 mph H 27%29.80 inHg

Today

6:00 PM

Sunny

83° 💧 None 💨 14 mph H 25%29.88 inHg

7:00 PM

Sunny

80° 💧 None 💨 11 mph H 31%29.91 inHg

8:00 PM

Sunny

76° 💧 None 💨 6 mph H 39%29.91 inHg

9:00 PM

Clear night

72° 💧 None 💨 5 mph H 45%29.94 inHg

10:00 PM

Clear night

71° 💧 None 💨 5 mph H 49%29.97 inHg

11:00 PM

Clear night

68° 💧 None 💨 4 mph H 56%30.00 inHg

Tomorrow

12:00 AM

Clear night

66° 💧 None 💨 3 mph H 63%29.97 inHg

1:00 AM

Clear night

65° 💧 None 💨 4 mph H 68%30.00 inHg

2:00 AM

Clear night

63° 💧 None 💨 4 mph H 71%30.00 inHg

3:00 AM

Mostly cloudy night

64° 💧 None 💨 7 mph H 68%30.00 inHg

4:00 AM

Clear night

67° 💧 None 💨 9 mph H 59%30.03 inHg

5:00 AM

Mostly clear night

66° 💧 None 💨 9 mph H 59%30.03 inHg

6:00 AM

Mostly cloudy night

64° 💧 0.001 in 💨 7 mph H 65%30.03 inHg

7:00 AM

Mostly cloudy night

64° 💧 None 💨 9 mph H 64%30.06 inHg

8:00 AM

Mostly sunny

65° 💧 None 💨 11 mph H 64%30.09 inHg

9:00 AM

Sunny

67° 💧 None 💨 12 mph H 59%30.09 inHg

10:00 AM

Sunny

69° 💧 None 💨 15 mph H 51%30.12 inHg

11:00 AM

Sunny

71° 💧 None 💨 13 mph H 49%30.12 inHg

12:00 PM

Sunny

73° 💧 None 💨 12 mph H 45%30.12 inHg

1:00 PM

Sunny

76° 💧 None 💨 13 mph H 39%30.09 inHg

2:00 PM

Sunny

77° 💧 None 💨 13 mph H 36%30.06 inHg

3:00 PM

Sunny

78° 💧 None 💨 12 mph H 34%30.06 inHg

4:00 PM

Sunny

79° 💧 None 💨 11 mph H 32%30.03 inHg

5:00 PM

Sunny

79° 💧 None 💨 11 mph H 31%30.03 inHg

6:00 PM

Sunny

78° 💧 None 💨 10 mph H 31%30.00 inHg

7:00 PM

Sunny

77° 💧 None 💨 8 mph H 33%30.00 inHg

8:00 PM

Clear night

72° 💧 None 💨 5 mph H 40%30.00 inHg

9:00 PM

Clear night

69° 💧 None 💨 4 mph H 47%30.03 inHg

10:00 PM

Clear night

68° 💧 None 💨 1 mph H 52%30.03 inHg

11:00 PM

Clear night

67° 💧 None 💨 1 mph H 56%30.03 inHg

Thursday

12:00 AM

Mostly cloudy night

64° 💧 None 💨 3 mph H 60%30.03 inHg

1:00 AM

Clear night

63° 💧 None 💨 4 mph H 62%30.03 inHg

2:00 AM

Clear night

62° 💧 None 💨 4 mph H 65%30.03 inHg

3:00 AM

Clear night

61° 💧 None 💨 5 mph H 64%30.00 inHg

4:00 AM

Clear night

61° 💧 None 💨 5 mph H 62%30.00 inHg

5:00 AM

Clear night

61° 💧 None 💨 5 mph H 61%30.00 inHg

6:00 AM

Clear night

61° 💧 None 💨 5 mph H 60%29.97 inHg

7:00 AM

Clear night

60° 💧 None 💨 5 mph H 62%29.97 inHg

8:00 AM

Sunny

61° 💧 None 💨 4 mph H 60%29.97 inHg

9:00 AM

Sunny

66° 💧 None 💨 4 mph H 52%29.97 inHg

10:00 AM

Sunny

71° 💧 None 💨 6 mph H 44%29.97 inHg

11:00 AM

Sunny

76° 💧 None 💨 9 mph H 38%29.94 inHg

12:00 PM

Sunny

81° 💧 None 💨 11 mph H 35%29.91 inHg

1:00 PM

Mostly sunny

85° 💧 None 💨 11 mph H 31%29.88 inHg

2:00 PM

Partly cloudy

87° 💧 None 💨 11 mph H 24%29.83 inHg

3:00 PM

Sunny

88° 💧 None 💨 12 mph H 27%29.80 inHg

4:00 PM

Sunny

89° 💧 None 💨 13 mph H 26%29.77 inHg

5:00 PM

Mostly sunny

88° 💧 None 💨 14 mph H 28%29.74 inHg

6:00 PM

Sunny

87° 💧 None 💨 13 mph H 33%29.71 inHg

7:00 PM

Sunny

86° 💧 None 💨 12 mph H 36%29.71 inHg

8:00 PM

Clear night

82° 💧 None 💨 12 mph H 42%29.68 inHg

9:00 PM

Clear night

79° 💧 None 💨 15 mph H 43%29.71 inHg

10:00 PM

Clear night

78° 💧 None 💨 13 mph H 48%29.71 inHg

11:00 PM

Clear night

76° 💧 None 💨 12 mph H 50%29.71 inHg

Friday

12:00 AM

Clear night

75° 💧 None 💨 11 mph H 51%29.71 inHg

1:00 AM

Clear night

75° 💧 None 💨 10 mph H 51%29.68 inHg

2:00 AM

Clear night

74° 💧 None 💨 10 mph H 52%29.68 inHg

3:00 AM

Clear night

73° 💧 None 💨 10 mph H 54%29.65 inHg

4:00 AM

Clear night

71° 💧 None 💨 10 mph H 56%29.65 inHg

5:00 AM

Clear night

70° 💧 None 💨 9 mph H 59%29.65 inHg

6:00 AM

Clear night

69° 💧 None 💨 9 mph H 62%29.62 inHg

7:00 AM

Clear night

68° 💧 None 💨 10 mph H 64%29.62 inHg

10:00 AM

Partly cloudy

75° 💧 None 💨 12 mph H 56%29.56 inHg

1:00 PM

Mostly sunny

85° 💧 None 💨 10 mph H 48%29.50 inHg

4:00 PM

Sunny

93° 💧 None 💨 8 mph H 27%29.41 inHg

7:00 PM

Mostly sunny

83° 💧 None 💨 17 mph H 44%29.50 inHg

10:00 PM

Mostly cloudy night

72° 💧 None 💨 15 mph H 43%29.74 inHg

Saturday

1:00 AM

Clear night

65° 💧 None 💨 12 mph H 47%29.83 inHg

4:00 AM

Clear night

61° 💧 None 💨 7 mph H 56%29.88 inHg

7:00 AM

Clear night

57° 💧 None 💨 5 mph H 68%29.97 inHg

10:00 AM

Mostly sunny

65° 💧 None 💨 7 mph H 48%30.00 inHg

1:00 PM

Mostly sunny

73° 💧 None 💨 7 mph H 32%30.00 inHg

4:00 PM

Mostly sunny

75° 💧 None 💨 7 mph H 28%29.97 inHg

7:00 PM

Mostly sunny

73° 💧 None 💨 6 mph H 30%29.97 inHg

10:00 PM

Partly cloudy night

66° 💧 None 💨 5 mph H 41%29.97 inHg

Sunday

1:00 AM

Mostly clear night

63° 💧 None 💨 9 mph H 46%30.00 inHg

4:00 AM

Mostly cloudy night

59° 💧 None 💨 10 mph H 72%30.00 inHg

7:00 AM

Overcast night

57° 💧 None 💨 12 mph H 75%29.94 inHg

10:00 AM

Moderate rain

60° 💧 None 💨 13 mph H 74%29.91 inHg

1:00 PM

Moderate rain

61° 💧 None 💨 13 mph H 85%29.83 inHg

4:00 PM

Moderate rain

62° 💧 None 💨 14 mph H 87%29.77 inHg

7:00 PM

Light rain

59° 💧 None 💨 14 mph H 93%29.77 inHg

10:00 PM

Overcast night

58° 💧 None 💨 13 mph H 91%29.80 inHg

Monday

1:00 AM

Moderate rain

58° 💧 None 💨 10 mph H 94%29.74 inHg

4:00 AM

Mostly cloudy night

55° 💧 None 💨 10 mph H 95%29.80 inHg

7:00 AM

Overcast night

54° 💧 None 💨 9 mph H 94%29.85 inHg

1:00 PM

Partly cloudy

66° 💧 None 💨 13 mph H 57%29.88 inHg

7:00 PM

Sunny

64° 💧 None 💨 15 mph H 50%29.88 inHg

Tuesday

1:00 AM

Clear night

54° 💧 None 💨 7 mph H 84%30.03 inHg

7:00 AM

Clear night

49° 💧 None 💨 4 mph H 94%30.15 inHg

1:00 PM

Sunny

63° 💧 None 💨 3 mph H 54%30.15 inHg

7:00 PM

Mostly sunny

65° 💧 None 💨 4 mph H 52%30.09 inHg

Wednesday

1:00 AM

Mostly clear night

58° 💧 None 💨 6 mph H 77%30.12 inHg

7:00 AM

Mostly cloudy night

57° 💧 None 💨 9 mph H 82%30.06 inHg

1:00 PM

Light thunderstorms

67° 💧 None 💨 9 mph H 79%29.97 inHg

7:00 PM

Mostly sunny

68° 💧 None 💨 9 mph H 91%29.88 inHg

Thursday

1:00 AM

Mostly clear night

64° 💧 None 💨 5 mph H 98%29.91 inHg

7:00 AM

Overcast night

61° 💧 None 💨 15 mph H 96%30.00 inHg

1:00 PM

Overcast

61° 💧 None 💨 15 mph H 87%30.06 inHg

7:00 PM

Overcast

64° 💧 None 💨 13 mph H 76%30.12 inHg

Friday

1:00 AM

Overcast night

61° 💧 None 💨 11 mph H 78%30.15 inHg

7:00 AM

Partly cloudy night

56° 💧 None 💨 9 mph H 91%30.15 inHg

1:00 PM

Light rain

64° 💧 None 💨 13 mph H 75%30.03 inHg

7:00 PM

Light rain

62° 💧 None 💨 12 mph H 92%29.88 inHg

Saturday

1:00 AM

Light rain

64° 💧 None 💨 8 mph H 96%29.68 inHg

7:00 AM

Light rain

67° 💧 None 💨 9 mph H 98%29.44 inHg

1:00 PM

Sunny

70° 💧 None 💨 21 mph H 53%29.62 inHg

7:00 PM

Sunny

67° 💧 None 💨 17 mph H 48%29.74 inHg

Sunday

1:00 AM

Clear night

58° 💧 None 💨 15 mph H 58%29.97 inHg

7:00 AM

Mostly clear night

53° 💧 None 💨 13 mph H 72%30.15 inHg

1:00 PM

Partly cloudy

57° 💧 None 💨 15 mph H 52%30.27 inHg

7:00 PM

Sunny

57° 💧 None 💨 6 mph H 51%30.27 inHg

Monday

1:00 AM

Clear night

45° 💧 None 💨 3 mph H 88%30.36 inHg

7:00 AM

Clear night

43° 💧 None 💨 6 mph H 87%30.36 inHg

1:00 PM

Sunny

64° 💧 None 💨 16 mph H 49%30.24 inHg

7:00 PM

Overcast

64° 💧 None 💨 15 mph H 59%30.03 inHg

Tuesday

1:00 AM

Overcast night

60° 💧 None 💨 17 mph H 65%29.94 inHg

7:00 AM

Overcast night

56° 💧 None 💨 10 mph H 67%29.85 inHg

1:00 PM

Mostly sunny

70° 💧 None 💨 9 mph H 56%29.80 inHg

7:00 PM

Sunny

71° 💧 None 💨 7 mph H 70%29.74 inHg

Wednesday

1:00 AM

Clear night

59° 💧 None 💨 3 mph H 93%29.77 inHg

7:00 AM

Partly cloudy night

58° 💧 None 💨 10 mph H 49%30.00 inHg

In Chelsea and, more broadly, across the state of South Dakota: As the afternoon winds down, expect a mix of sun and clouds with temperatures remaining mild to warm, ranging from 65 to 79 degrees Fahrenheit. Winds will be coming from the northwest at around 11 mph, with gusts reaching up to 13 mph, providing a gentle breeze. No rain is anticipated through the evening, so conditions will be dry and comfortable. The sky may continue to feature periods of sun interspersed with clouds, creating a pleasant end to the day. Temperatures will gradually cool into the evening but are unlikely to drop significantly, staying within the mild range. Overall, it looks like an enjoyable evening with moderate winds and no weather disruptions.

15-Day Weather Outlook for Chelsea

TomorrowTomorrow

Mostly cloudy 80°/63° 💧 None 💨 15 mph

Thursday, Sep 10Thu Sep 10

Mostly cloudy 89°/60° 💧 None 💨 14 mph

Friday, Sep 11Fri Sep 11

Partly cloudy 93°/68° 💧 0.002 in 💨 15 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 83°/57° 💧 0.001 in 💨 17 mph

Sunday, Sep 13Sun Sep 13

Moderate rain 73°/57° 💧 0.439 in 💨 14 mph

Monday, Sep 14Mon Sep 14

Moderate rain 66°/54° 💧 0.220 in 💨 14 mph

Tuesday, Sep 15Tue Sep 15

Sunny 64°/49° 💧 0.000 in 💨 15 mph

Wednesday, Sep 16Wed Sep 16

Light thunderstorms 67°/57° 💧 0.219 in 💨 9 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 68°/61° 💧 0.622 in 💨 15 mph

Friday, Sep 18Fri Sep 18

Light rain 64°/56° 💧 0.019 in 💨 13 mph

Saturday, Sep 19Sat Sep 19

Light rain 70°/62° 💧 0.699 in 💨 21 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 67°/53° 💧 0.001 in 💨 17 mph

Monday, Sep 21Mon Sep 21

Sunny 64°/43° 💧 None 💨 16 mph

Tuesday, Sep 22Tue Sep 22

Overcast 70°/56° 💧 0.001 in 💨 17 mph

Wednesday, Sep 23Wed Sep 23

Partly cloudy 71°/58° 💧 None 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Chelsea

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Chelsea

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 6:00 PM

PM2.5 Fine particles Good 0,7µg/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 1,2µg/m³

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

O₃ Ozone Fair 93,9µg/m³

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

NO₂ Nitrogen dioxide Good 0,7µg/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 Chelsea

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 6,1High 🙂Fair

Tomorrow UV 5,7Moderate 🙂Fair

Thursday UV 6,1High 🙂Fair

Friday UV 5,9Moderate 😐Moderate

Saturday UV 3,6Moderate 🙂Fair

Sunday UV 5,0Moderate —Unavailable

Monday UV 5,0Moderate —Unavailable

Hourly UV index today

6:00 PMUV 1,0 7:00 PMUV 0,2

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

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

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure. Dry air can increase hydration needs.

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 Chelsea

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · CHELSEA, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 2:00 AM–3:00 AM.

100/100Best-hour score

BEST TIME TONIGHT 2:00 AM–3:00 AM Astronomical darkness: 9:42 PM–5:24 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 7% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 51° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min73%

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

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

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

UPCOMING

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

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.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Chelsea were last refreshed today at 5:09 PM. The current forecast period extends through 10/09/2026 at 3:00 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.