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Current weather in Custer is overcast clouds.

Where can I find the hourly weather forecast for Custer?

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

Is the weather forecast for Custer updated regularly?

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

Now · 8:43 AM

Custer Weather & Hourly Forecast

United States · South Dakota · 57730

55°F

Overcast

Feels like: 52°F

💧 Humidity 95% 🌡 Pressure 30.00 inHg 💨 Wind 7 mph 👁 Visibility 4.5 mi ☁ Clouds 99% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:41 AM 🌇 Sunset 6:51 PM

Hourly Forecast for Custer

Today

9:00 AM

Light rain

58° 💧 0.009 in 💨 6 mph H 91%30.00 inHg

12:00 PM

Overcast

70° 💧 0.000 in 💨 7 mph H 42%29.97 inHg

3:00 PM

Overcast

69° 💧 None 💨 8 mph H 39%29.97 inHg

6:00 PM

Mostly cloudy

64° 💧 None 💨 4 mph H 58%30.00 inHg

9:00 PM

Overcast night

56° 💧 0.001 in 💨 2 mph H 81%30.06 inHg

Tomorrow

12:00 AM

Mostly cloudy night

52° 💧 None 💨 3 mph H 88%30.06 inHg

3:00 AM

Mostly cloudy night

47° 💧 None 💨 4 mph H 95%30.09 inHg

6:00 AM

Mostly clear night

49° 💧 None 💨 7 mph H 79%30.12 inHg

9:00 AM

Partly cloudy

60° 💧 None 💨 7 mph H 53%30.18 inHg

12:00 PM

Overcast

67° 💧 None 💨 5 mph H 34%30.15 inHg

3:00 PM

Mostly cloudy

67° 💧 None 💨 7 mph H 36%30.12 inHg

6:00 PM

Overcast

60° 💧 None 💨 5 mph H 50%30.15 inHg

9:00 PM

Mostly cloudy night

52° 💧 None 💨 3 mph H 74%30.21 inHg

Friday

12:00 AM

Mostly clear night

50° 💧 None 💨 1 mph H 74%30.18 inHg

3:00 AM

Mostly cloudy night

50° 💧 None 💨 2 mph H 63%30.15 inHg

6:00 AM

Overcast night

48° 💧 None 💨 3 mph H 67%30.12 inHg

Today

9:00 AM

Light rain

58° 💧 0.006 in 💨 6 mph H 91%30.00 inHg

10:00 AM

Mostly cloudy

61° 💧 0.003 in 💨 6 mph H 78%30.03 inHg

11:00 AM

Overcast

67° 💧 None 💨 7 mph H 55%30.00 inHg

12:00 PM

Overcast

70° 💧 0.000 in 💨 7 mph H 42%29.97 inHg

1:00 PM

Overcast

70° 💧 None 💨 7 mph H 38%29.97 inHg

2:00 PM

Overcast

69° 💧 None 💨 7 mph H 39%29.97 inHg

3:00 PM

Overcast

69° 💧 None 💨 8 mph H 39%29.97 inHg

4:00 PM

Overcast

68° 💧 None 💨 7 mph H 41%29.97 inHg

5:00 PM

Overcast

67° 💧 None 💨 6 mph H 45%29.97 inHg

6:00 PM

Mostly cloudy

64° 💧 None 💨 4 mph H 58%30.00 inHg

7:00 PM

Overcast night

57° 💧 None 💨 4 mph H 76%30.03 inHg

8:00 PM

Overcast night

57° 💧 None 💨 3 mph H 79%30.03 inHg

9:00 PM

Overcast night

56° 💧 None 💨 2 mph H 81%30.06 inHg

10:00 PM

Overcast night

54° 💧 0.001 in 💨 3 mph H 85%30.09 inHg

11:00 PM

Partly cloudy night

53° 💧 None 💨 3 mph H 87%30.06 inHg

Tomorrow

12:00 AM

Mostly cloudy night

52° 💧 None 💨 3 mph H 88%30.06 inHg

1:00 AM

Mostly cloudy night

50° 💧 None 💨 2 mph H 92%30.06 inHg

2:00 AM

Mostly cloudy night

48° 💧 None 💨 2 mph H 94%30.06 inHg

3:00 AM

Mostly cloudy night

47° 💧 None 💨 4 mph H 95%30.09 inHg

4:00 AM

Clear night

48° 💧 None 💨 6 mph H 90%30.12 inHg

5:00 AM

Clear night

49° 💧 None 💨 6 mph H 82%30.12 inHg

6:00 AM

Mostly clear night

49° 💧 None 💨 7 mph H 79%30.12 inHg

7:00 AM

Mostly sunny

49° 💧 None 💨 7 mph H 79%30.15 inHg

8:00 AM

Partly cloudy

55° 💧 None 💨 7 mph H 67%30.18 inHg

9:00 AM

Partly cloudy

60° 💧 None 💨 7 mph H 53%30.18 inHg

10:00 AM

Mostly cloudy

63° 💧 None 💨 6 mph H 37%30.18 inHg

11:00 AM

Mostly cloudy

65° 💧 None 💨 6 mph H 35%30.18 inHg

12:00 PM

Overcast

67° 💧 None 💨 5 mph H 34%30.15 inHg

1:00 PM

Overcast

68° 💧 None 💨 5 mph H 34%30.15 inHg

2:00 PM

Overcast

68° 💧 None 💨 6 mph H 35%30.12 inHg

3:00 PM

Mostly cloudy

67° 💧 None 💨 7 mph H 36%30.12 inHg

4:00 PM

Mostly cloudy

66° 💧 None 💨 7 mph H 39%30.12 inHg

5:00 PM

Overcast

64° 💧 None 💨 7 mph H 42%30.15 inHg

6:00 PM

Overcast

60° 💧 None 💨 5 mph H 50%30.15 inHg

7:00 PM

Overcast night

54° 💧 None 💨 4 mph H 65%30.18 inHg

8:00 PM

Overcast night

53° 💧 None 💨 4 mph H 71%30.18 inHg

9:00 PM

Mostly cloudy night

52° 💧 None 💨 3 mph H 74%30.21 inHg

10:00 PM

Mostly cloudy night

51° 💧 None 💨 2 mph H 74%30.21 inHg

11:00 PM

Mostly cloudy night

50° 💧 None 💨 2 mph H 74%30.21 inHg

Friday

12:00 AM

Mostly clear night

50° 💧 None 💨 1 mph H 74%30.18 inHg

1:00 AM

Clear night

49° 💧 None 💨 1 mph H 73%30.18 inHg

2:00 AM

Clear night

50° 💧 None 💨 2 mph H 69%30.15 inHg

3:00 AM

Mostly cloudy night

50° 💧 None 💨 2 mph H 63%30.15 inHg

4:00 AM

Overcast night

49° 💧 None 💨 3 mph H 60%30.12 inHg

5:00 AM

Overcast night

49° 💧 None 💨 3 mph H 61%30.12 inHg

6:00 AM

Overcast night

48° 💧 None 💨 3 mph H 67%30.12 inHg

7:00 AM

Mostly cloudy

48° 💧 None 💨 3 mph H 72%30.12 inHg

8:00 AM

Mostly cloudy

52° 💧 None 💨 4 mph H 70%30.12 inHg

9:00 AM

Mostly cloudy

56° 💧 None 💨 4 mph H 63%30.12 inHg

10:00 AM

Mostly cloudy

60° 💧 None 💨 6 mph H 55%30.09 inHg

11:00 AM

Mostly cloudy

62° 💧 None 💨 7 mph H 50%30.06 inHg

12:00 PM

Partly cloudy

63° 💧 None 💨 8 mph H 48%30.03 inHg

1:00 PM

Mostly cloudy

64° 💧 None 💨 8 mph H 47%30.00 inHg

2:00 PM

Partly cloudy

64° 💧 None 💨 8 mph H 49%29.97 inHg

3:00 PM

Mostly sunny

63° 💧 None 💨 8 mph H 55%29.94 inHg

4:00 PM

Mostly sunny

62° 💧 None 💨 8 mph H 60%29.94 inHg

5:00 PM

Partly cloudy

61° 💧 None 💨 8 mph H 65%29.94 inHg

6:00 PM

Overcast

59° 💧 None 💨 5 mph H 71%29.94 inHg

Saturday

3:00 AM

Partly cloudy night

53° 💧 None 💨 7 mph H 99%29.83 inHg

6:00 AM

Clear night

54° 💧 None 💨 9 mph H 78%29.80 inHg

9:00 AM

Sunny

67° 💧 None 💨 6 mph H 40%29.85 inHg

12:00 PM

Sunny

75° 💧 None 💨 5 mph H 32%29.85 inHg

3:00 PM

Mostly sunny

70° 💧 None 💨 6 mph H 53%29.88 inHg

6:00 PM

Sunny

65° 💧 None 💨 4 mph H 67%29.91 inHg

9:00 PM

Clear night

56° 💧 None 💨 2 mph H 85%29.97 inHg

Sunday

12:00 AM

Clear night

55° 💧 None 💨 0 mph H 89%29.97 inHg

3:00 AM

Clear night

54° 💧 None 💨 5 mph H 92%29.97 inHg

6:00 AM

Partly cloudy night

53° 💧 None 💨 6 mph H 87%29.97 inHg

9:00 AM

Partly cloudy

60° 💧 None 💨 3 mph H 76%30.00 inHg

12:00 PM

Mostly cloudy

65° 💧 None 💨 5 mph H 69%30.00 inHg

3:00 PM

Overcast

65° 💧 None 💨 6 mph H 70%29.94 inHg

6:00 PM

Partly cloudy

62° 💧 None 💨 5 mph H 79%29.94 inHg

9:00 PM

Light rain

57° 💧 None 💨 4 mph H 99%29.94 inHg

Monday

12:00 AM

Overcast night

56° 💧 None 💨 1 mph H 95%29.88 inHg

3:00 AM

Overcast night

56° 💧 None 💨 2 mph H 93%29.85 inHg

6:00 AM

Overcast night

55° 💧 None 💨 7 mph H 96%29.85 inHg

9:00 AM

Mostly cloudy

57° 💧 None 💨 4 mph H 94%29.88 inHg

12:00 PM

Light rain

62° 💧 None 💨 4 mph H 73%29.85 inHg

3:00 PM

Moderate rain

56° 💧 None 💨 5 mph H 93%29.85 inHg

6:00 PM

Light rain

52° 💧 None 💨 11 mph H 97%29.88 inHg

9:00 PM

Light rain

49° 💧 None 💨 12 mph H 97%29.94 inHg

Tuesday

12:00 AM

Overcast night

48° 💧 None 💨 12 mph H 94%29.97 inHg

6:00 AM

Overcast night

48° 💧 None 💨 11 mph H 50%29.94 inHg

12:00 PM

Sunny

43° 💧 None 💨 12 mph H 61%30.00 inHg

6:00 PM

Sunny

57° 💧 None 💨 4 mph H 30%30.00 inHg

Wednesday

12:00 AM

Clear night

51° 💧 None 💨 3 mph H 54%30.00 inHg

6:00 AM

Mostly clear night

41° 💧 None 💨 6 mph H 74%29.97 inHg

12:00 PM

Partly cloudy

44° 💧 None 💨 8 mph H 54%29.80 inHg

6:00 PM

Mostly cloudy

66° 💧 None 💨 8 mph H 26%29.68 inHg

Thursday

12:00 AM

Mostly clear night

55° 💧 None 💨 6 mph H 49%29.83 inHg

6:00 AM

Clear night

46° 💧 None 💨 11 mph H 52%30.03 inHg

12:00 PM

Mostly sunny

41° 💧 None 💨 11 mph H 69%30.15 inHg

6:00 PM

Sunny

54° 💧 None 💨 9 mph H 28%30.15 inHg

Friday

12:00 AM

Clear night

51° 💧 None 💨 3 mph H 41%30.12 inHg

6:00 AM

Mostly clear night

37° 💧 None 💨 1 mph H 70%30.18 inHg

12:00 PM

Mostly cloudy

38° 💧 None 💨 6 mph H 61%30.15 inHg

6:00 PM

Mostly cloudy

56° 💧 None 💨 6 mph H 36%30.03 inHg

Saturday

12:00 AM

Mostly cloudy night

53° 💧 None 💨 2 mph H 60%29.97 inHg

6:00 AM

Mostly clear night

43° 💧 None 💨 5 mph H 70%29.97 inHg

12:00 PM

Mostly sunny

49° 💧 None 💨 6 mph H 44%29.97 inHg

6:00 PM

Mostly sunny

66° 💧 None 💨 5 mph H 29%30.00 inHg

Sunday

12:00 AM

Mostly clear night

58° 💧 None 💨 3 mph H 47%30.03 inHg

6:00 AM

Mostly cloudy night

50° 💧 None 💨 5 mph H 54%30.06 inHg

12:00 PM

Mostly cloudy

54° 💧 None 💨 9 mph H 45%29.97 inHg

6:00 PM

Partly cloudy

71° 💧 None 💨 1 mph H 25%29.97 inHg

Monday

12:00 AM

Mostly clear night

62° 💧 None 💨 3 mph H 51%29.97 inHg

6:00 AM

Clear night

50° 💧 None 💨 5 mph H 61%29.94 inHg

12:00 PM

Sunny

59° 💧 None 💨 11 mph H 37%29.88 inHg

6:00 PM

Sunny

81° 💧 None 💨 4 mph H 19%29.88 inHg

Tuesday

12:00 AM

Clear night

66° 💧 None 💨 12 mph H 34%30.03 inHg

6:00 AM

Clear night

50° 💧 None 💨 3 mph H 69%30.21 inHg

12:00 PM

Sunny

45° 💧 None 💨 2 mph H 79%30.30 inHg

6:00 PM

Sunny

59° 💧 None 💨 5 mph H 45%30.33 inHg

Wednesday

12:00 AM

Clear night

53° 💧 None 💨 5 mph H 38%30.33 inHg

6:00 AM

Clear night

44° 💧 None 💨 1 mph H 43%30.39 inHg

12:00 PM

Sunny

42° 💧 None 💨 0 mph H 46%30.36 inHg

6:00 PM

Sunny

55° 💧 None 💨 6 mph H 38%30.30 inHg

Thursday

12:00 AM

Clear night

49° 💧 None 💨 4 mph H 53%30.21 inHg

In Custer 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 Custer

TomorrowTomorrow

Mostly cloudy 68°/47° 💧 None 💨 7 mph

Friday, Sep 25Fri Sep 25

Overcast 64°/48° 💧 0.050 in 💨 8 mph

Saturday, Sep 26Sat Sep 26

Overcast 75°/53° 💧 0.004 in 💨 10 mph

Sunday, Sep 27Sun Sep 27

Light rain 63°/51° 💧 0.035 in 💨 7 mph

Monday, Sep 28Mon Sep 28

Light rain 70°/52° 💧 0.032 in 💨 12 mph

Tuesday, Sep 29Tue Sep 29

Overcast 57°/43° 💧 None 💨 12 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 66°/41° 💧 0.017 in 💨 8 mph

Thursday, Oct 1Thu Oct 1

Mostly sunny 54°/41° 💧 0.001 in 💨 11 mph

Friday, Oct 2Fri Oct 2

Mostly sunny 56°/37° 💧 None 💨 6 mph

Saturday, Oct 3Sat Oct 3

Mostly sunny 66°/43° 💧 None 💨 6 mph

Sunday, Oct 4Sun Oct 4

Mostly cloudy 71°/50° 💧 None 💨 9 mph

Monday, Oct 5Mon Oct 5

Sunny 81°/50° 💧 None 💨 12 mph

Tuesday, Oct 6Tue Oct 6

Sunny 59°/45° 💧 None 💨 5 mph

Wednesday, Oct 7Wed Oct 7

Sunny 55°/42° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Custer

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Custer

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 9:00 AM

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

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 4,7Moderate 😊Good

Tomorrow UV 4,9Moderate 🙂Fair

Friday UV 5,7Moderate 🙂Fair

Saturday UV 5,6Moderate 😐Moderate

Sunday UV 6,0High 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 4,0Moderate —Unavailable

Hourly UV index today

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

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 Custer

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · CUSTER, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:26 PM–5:07 AM

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

☾ Moonlight 95% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 59° 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 min70%

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 Custer were last refreshed today at 7:49 AM. The current forecast period extends through 25/09/2026 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.