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Current weather in Reliance is overcast clouds.

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

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

Now · 6:09 AM

Reliance Weather & Hourly Forecast

United States · South Dakota · 57569

60°F

Overcast night

Feels like: 53°F

💧 Humidity 84% 🌡 Pressure 29.85 inHg 💨 Wind 14 mph 👁 Visibility 23.5 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Reliance

Today

7:00 AM

Overcast night

59° 💧 0.009 in 💨 16 mph H 85%29.80 inHg

10:00 AM

Overcast

62° 💧 0.000 in 💨 16 mph H 82%29.71 inHg

1:00 PM

Partly cloudy

75° 💧 0.004 in 💨 14 mph H 68%29.59 inHg

4:00 PM

Light rain

80° 💧 0.005 in 💨 20 mph H 64%29.62 inHg

7:00 PM

Sunny

73° 💧 None 💨 10 mph H 41%29.68 inHg

10:00 PM

Clear night

64° 💧 None 💨 6 mph H 57%29.80 inHg

Tomorrow

1:00 AM

Clear night

62° 💧 None 💨 11 mph H 45%29.88 inHg

4:00 AM

Clear night

60° 💧 None 💨 16 mph H 47%29.97 inHg

7:00 AM

Partly cloudy night

55° 💧 None 💨 8 mph H 67%30.09 inHg

10:00 AM

Sunny

61° 💧 None 💨 9 mph H 57%30.18 inHg

1:00 PM

Sunny

67° 💧 None 💨 7 mph H 48%30.18 inHg

4:00 PM

Sunny

70° 💧 None 💨 3 mph H 42%30.15 inHg

7:00 PM

Partly cloudy

68° 💧 None 💨 4 mph H 51%30.12 inHg

10:00 PM

Mostly cloudy night

61° 💧 0.000 in 💨 5 mph H 64%30.18 inHg

Wednesday

1:00 AM

Overcast night

59° 💧 None 💨 9 mph H 67%30.21 inHg

4:00 AM

Overcast night

59° 💧 None 💨 5 mph H 69%30.21 inHg

Today

7:00 AM

Overcast night

59° 💧 None 💨 16 mph H 85%29.80 inHg

8:00 AM

Light rain

59° 💧 0.009 in 💨 19 mph H 88%29.80 inHg

9:00 AM

Overcast

60° 💧 0.001 in 💨 21 mph H 87%29.74 inHg

10:00 AM

Overcast

62° 💧 None 💨 16 mph H 82%29.71 inHg

11:00 AM

Overcast

65° 💧 0.000 in 💨 18 mph H 78%29.68 inHg

12:00 PM

Mostly cloudy

69° 💧 None 💨 17 mph H 73%29.62 inHg

1:00 PM

Partly cloudy

75° 💧 0.000 in 💨 14 mph H 68%29.59 inHg

2:00 PM

Mostly cloudy

79° 💧 None 💨 10 mph H 65%29.59 inHg

3:00 PM

Mostly sunny

82° 💧 0.003 in 💨 10 mph H 60%29.59 inHg

4:00 PM

Light rain

80° 💧 0.005 in 💨 20 mph H 64%29.62 inHg

5:00 PM

Sunny

77° 💧 0.000 in 💨 17 mph H 49%29.65 inHg

6:00 PM

Sunny

77° 💧 None 💨 15 mph H 39%29.65 inHg

7:00 PM

Sunny

73° 💧 None 💨 10 mph H 41%29.68 inHg

8:00 PM

Clear night

68° 💧 None 💨 5 mph H 50%29.74 inHg

9:00 PM

Clear night

65° 💧 None 💨 4 mph H 56%29.77 inHg

10:00 PM

Clear night

64° 💧 None 💨 6 mph H 57%29.80 inHg

11:00 PM

Clear night

63° 💧 None 💨 7 mph H 56%29.83 inHg

Tomorrow

12:00 AM

Clear night

61° 💧 None 💨 8 mph H 52%29.85 inHg

1:00 AM

Clear night

62° 💧 None 💨 11 mph H 45%29.88 inHg

2:00 AM

Clear night

63° 💧 None 💨 14 mph H 36%29.91 inHg

3:00 AM

Clear night

61° 💧 None 💨 16 mph H 37%29.94 inHg

4:00 AM

Clear night

60° 💧 None 💨 16 mph H 47%29.97 inHg

5:00 AM

Clear night

58° 💧 None 💨 15 mph H 56%30.00 inHg

6:00 AM

Clear night

56° 💧 None 💨 12 mph H 62%30.06 inHg

7:00 AM

Partly cloudy night

55° 💧 None 💨 8 mph H 67%30.09 inHg

8:00 AM

Sunny

54° 💧 None 💨 5 mph H 71%30.12 inHg

9:00 AM

Sunny

57° 💧 None 💨 6 mph H 67%30.15 inHg

10:00 AM

Sunny

61° 💧 None 💨 9 mph H 57%30.18 inHg

11:00 AM

Sunny

63° 💧 None 💨 9 mph H 52%30.18 inHg

12:00 PM

Sunny

65° 💧 None 💨 8 mph H 50%30.21 inHg

1:00 PM

Sunny

67° 💧 None 💨 7 mph H 48%30.18 inHg

2:00 PM

Sunny

68° 💧 None 💨 6 mph H 45%30.18 inHg

3:00 PM

Sunny

70° 💧 None 💨 4 mph H 43%30.15 inHg

4:00 PM

Sunny

70° 💧 None 💨 3 mph H 42%30.15 inHg

5:00 PM

Sunny

70° 💧 None 💨 2 mph H 41%30.12 inHg

6:00 PM

Sunny

70° 💧 None 💨 3 mph H 42%30.12 inHg

7:00 PM

Partly cloudy

68° 💧 None 💨 4 mph H 51%30.12 inHg

8:00 PM

Mostly clear night

63° 💧 None 💨 4 mph H 60%30.15 inHg

9:00 PM

Mostly cloudy night

61° 💧 None 💨 5 mph H 63%30.15 inHg

10:00 PM

Mostly cloudy night

61° 💧 None 💨 5 mph H 64%30.18 inHg

11:00 PM

Mostly cloudy night

60° 💧 None 💨 7 mph H 66%30.21 inHg

Wednesday

12:00 AM

Mostly cloudy night

59° 💧 0.000 in 💨 8 mph H 67%30.21 inHg

1:00 AM

Overcast night

59° 💧 None 💨 9 mph H 67%30.21 inHg

2:00 AM

Overcast night

60° 💧 None 💨 9 mph H 64%30.21 inHg

3:00 AM

Overcast night

59° 💧 None 💨 6 mph H 68%30.21 inHg

4:00 AM

Overcast night

59° 💧 None 💨 5 mph H 69%30.21 inHg

5:00 AM

Overcast night

58° 💧 None 💨 6 mph H 72%30.21 inHg

6:00 AM

Overcast night

58° 💧 None 💨 7 mph H 74%30.21 inHg

7:00 AM

Mostly cloudy night

57° 💧 None 💨 9 mph H 76%30.21 inHg

8:00 AM

Overcast

58° 💧 0.001 in 💨 12 mph H 76%30.21 inHg

9:00 AM

Overcast

59° 💧 None 💨 12 mph H 75%30.21 inHg

10:00 AM

Overcast

61° 💧 None 💨 14 mph H 70%30.21 inHg

11:00 AM

Overcast

63° 💧 0.001 in 💨 14 mph H 66%30.21 inHg

12:00 PM

Overcast

64° 💧 None 💨 15 mph H 63%30.18 inHg

1:00 PM

Mostly cloudy

66° 💧 None 💨 14 mph H 61%30.18 inHg

2:00 PM

Mostly cloudy

68° 💧 None 💨 14 mph H 57%30.12 inHg

3:00 PM

Mostly sunny

70° 💧 None 💨 14 mph H 58%30.12 inHg

4:00 PM

Mostly cloudy

71° 💧 None 💨 14 mph H 58%30.09 inHg

5:00 PM

Overcast

75° 💧 None 💨 13 mph H 56%30.06 inHg

6:00 PM

Mostly cloudy

74° 💧 None 💨 12 mph H 58%30.06 inHg

7:00 PM

Mostly cloudy

73° 💧 None 💨 11 mph H 62%30.06 inHg

10:00 PM

Mostly cloudy night

67° 💧 None 💨 7 mph H 79%30.12 inHg

Thursday

1:00 AM

Partly cloudy night

63° 💧 None 💨 6 mph H 89%30.15 inHg

4:00 AM

Mostly cloudy night

61° 💧 None 💨 4 mph H 95%30.15 inHg

7:00 AM

Mostly cloudy night

60° 💧 None 💨 5 mph H 98%30.21 inHg

10:00 AM

Overcast

67° 💧 None 💨 8 mph H 84%30.24 inHg

1:00 PM

Partly cloudy

77° 💧 None 💨 13 mph H 59%30.21 inHg

4:00 PM

Overcast

82° 💧 None 💨 11 mph H 49%30.12 inHg

7:00 PM

Overcast

77° 💧 None 💨 7 mph H 62%30.09 inHg

10:00 PM

Overcast night

72° 💧 None 💨 12 mph H 74%30.15 inHg

Friday

1:00 AM

Moderate rain

67° 💧 None 💨 12 mph H 94%30.12 inHg

4:00 AM

Moderate rain

66° 💧 None 💨 15 mph H 94%30.06 inHg

7:00 AM

Heavy rain

65° 💧 None 💨 18 mph H 94%30.00 inHg

10:00 AM

Overcast

67° 💧 None 💨 15 mph H 94%29.94 inHg

1:00 PM

Mostly cloudy

76° 💧 None 💨 12 mph H 79%29.85 inHg

4:00 PM

Partly cloudy

85° 💧 None 💨 10 mph H 53%29.77 inHg

7:00 PM

Mostly sunny

80° 💧 None 💨 5 mph H 70%29.74 inHg

10:00 PM

Partly cloudy night

72° 💧 None 💨 4 mph H 86%29.74 inHg

Saturday

1:00 AM

Partly cloudy night

69° 💧 None 💨 5 mph H 97%29.77 inHg

4:00 AM

Overcast night

67° 💧 None 💨 4 mph H 100%29.77 inHg

7:00 AM

Overcast night

66° 💧 None 💨 7 mph H 100%29.83 inHg

10:00 AM

Overcast

68° 💧 None 💨 10 mph H 93%29.85 inHg

1:00 PM

Light rain

72° 💧 None 💨 9 mph H 83%29.85 inHg

4:00 PM

Mostly cloudy

76° 💧 None 💨 10 mph H 69%29.83 inHg

7:00 PM

Mostly sunny

74° 💧 None 💨 5 mph H 77%29.83 inHg

Sunday

1:00 AM

Mostly clear night

64° 💧 None 💨 3 mph H 96%29.88 inHg

7:00 AM

Clear night

61° 💧 None 💨 12 mph H 77%29.94 inHg

1:00 PM

Overcast

68° 💧 None 💨 17 mph H 60%29.97 inHg

7:00 PM

Sunny

68° 💧 None 💨 14 mph H 63%29.97 inHg

Monday

1:00 AM

Mostly clear night

61° 💧 None 💨 12 mph H 78%30.09 inHg

7:00 AM

Mostly cloudy night

56° 💧 None 💨 12 mph H 93%30.18 inHg

1:00 PM

Mostly sunny

67° 💧 None 💨 13 mph H 56%30.21 inHg

7:00 PM

Sunny

67° 💧 None 💨 6 mph H 53%30.15 inHg

Tuesday

1:00 AM

Clear night

58° 💧 None 💨 3 mph H 75%30.18 inHg

7:00 AM

Clear night

51° 💧 None 💨 3 mph H 92%30.21 inHg

1:00 PM

Sunny

70° 💧 None 💨 11 mph H 47%30.18 inHg

7:00 PM

Sunny

68° 💧 None 💨 11 mph H 48%30.06 inHg

Wednesday

1:00 AM

Clear night

60° 💧 None 💨 13 mph H 65%30.06 inHg

7:00 AM

Partly cloudy night

56° 💧 None 💨 13 mph H 78%30.06 inHg

1:00 PM

Partly cloudy

73° 💧 None 💨 15 mph H 50%30.00 inHg

7:00 PM

Mostly sunny

73° 💧 None 💨 12 mph H 48%29.91 inHg

Thursday

1:00 AM

Clear night

64° 💧 None 💨 13 mph H 70%29.97 inHg

7:00 AM

Clear night

59° 💧 None 💨 8 mph H 78%30.00 inHg

1:00 PM

Sunny

76° 💧 None 💨 7 mph H 52%29.97 inHg

7:00 PM

Overcast

76° 💧 None 💨 6 mph H 55%29.94 inHg

Friday

1:00 AM

Mostly cloudy night

68° 💧 None 💨 10 mph H 69%29.97 inHg

7:00 AM

Mostly cloudy night

61° 💧 None 💨 5 mph H 88%30.00 inHg

1:00 PM

Mostly sunny

77° 💧 None 💨 8 mph H 57%30.03 inHg

7:00 PM

Mostly cloudy

78° 💧 None 💨 3 mph H 63%30.00 inHg

Saturday

1:00 AM

Partly cloudy night

68° 💧 None 💨 9 mph H 84%30.09 inHg

7:00 AM

Overcast night

62° 💧 None 💨 7 mph H 96%30.15 inHg

1:00 PM

Light rain

73° 💧 None 💨 7 mph H 68%30.18 inHg

7:00 PM

Partly cloudy

72° 💧 None 💨 10 mph H 71%30.09 inHg

Sunday

1:00 AM

Light rain

64° 💧 None 💨 5 mph H 96%30.12 inHg

7:00 AM

Mostly clear night

62° 💧 None 💨 5 mph H 98%30.06 inHg

1:00 PM

Light rain

73° 💧 None 💨 3 mph H 72%29.94 inHg

7:00 PM

Mostly cloudy

66° 💧 None 💨 3 mph H 92%29.88 inHg

Monday

1:00 AM

Mostly cloudy night

64° 💧 None 💨 4 mph H 98%29.88 inHg

7:00 AM

Overcast night

64° 💧 None 💨 7 mph H 98%29.88 inHg

1:00 PM

Mostly sunny

71° 💧 None 💨 6 mph H 70%29.91 inHg

7:00 PM

Mostly sunny

67° 💧 None 💨 7 mph H 79%29.91 inHg

In Reliance and, more broadly, across the state of South Dakota: This evening will feature mostly sunny skies with a few clouds drifting through. Temperatures are expected to remain mild, ranging from 66 to 68 degrees Fahrenheit. Winds will be coming from the east at around 16 mph, with occasional gusts reaching up to 32 mph. No precipitation is anticipated during the next few hours, making for a relatively calm and comfortable evening. The moderate breeze may bring a slight chill, but overall conditions should remain pleasant. As the night progresses, skies will likely stay clear or partly cloudy, with temperatures gradually cooling but staying within the mild range. No major weather concerns are forecasted for the upcoming hours.

15-Day Weather Outlook for Reliance

TomorrowTomorrow

Partly cloudy 70°/54° 💧 None 💨 16 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 75°/57° 💧 0.326 in 💨 14 mph

Thursday, Sep 17Thu Sep 17

Overcast 82°/60° 💧 0.001 in 💨 13 mph

Friday, Sep 18Fri Sep 18

Heavy rain 85°/65° 💧 0.830 in 💨 18 mph

Saturday, Sep 19Sat Sep 19

Light rain 76°/66° 💧 0.037 in 💨 10 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 68°/61° 💧 0.008 in 💨 17 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 67°/56° 💧 0.001 in 💨 13 mph

Tuesday, Sep 22Tue Sep 22

Sunny 70°/51° 💧 None 💨 11 mph

Wednesday, Sep 23Wed Sep 23

Partly cloudy 73°/56° 💧 None 💨 15 mph

Thursday, Sep 24Thu Sep 24

Overcast 76°/59° 💧 0.001 in 💨 13 mph

Friday, Sep 25Fri Sep 25

Mostly cloudy 78°/61° 💧 None 💨 10 mph

Saturday, Sep 26Sat Sep 26

Light rain 73°/62° 💧 0.061 in 💨 10 mph

Sunday, Sep 27Sun Sep 27

Light rain 73°/62° 💧 0.607 in 💨 5 mph

Monday, Sep 28Mon Sep 28

Mostly sunny 71°/64° 💧 0.082 in 💨 7 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Reliance

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Reliance

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 7:00 AM

PM2.5 Fine particles Good 2,3µg/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 2,4µg/m³

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

O₃ Ozone Good 52,6µg/m³

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

NO₂ Nitrogen dioxide Good 1,2µg/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 Reliance

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 4,8Moderate 😊Good

Tomorrow UV 5,8Moderate 🙂Fair

Wednesday UV 0,7Low 🙂Fair

Thursday UV 6,0High 🙂Fair

Friday UV 5,0Moderate 🙂Fair

Saturday UV 5,0Moderate —Unavailable

Sunday UV 6,0High —Unavailable

Hourly UV index today

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

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 Reliance

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · RELIANCE, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

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

100/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 9:29 PM–5:39 AM

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

☾ Moonlight 13% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 76° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min80%

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.

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Forecast data for Reliance were last refreshed today at 6:08 AM. The current forecast period extends through 16/09/2026 at 4:00 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.