What is the weather in Summit right now?

Current weather in Summit is scattered clouds.

Where can I find the hourly weather forecast for Summit?

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

Is the weather forecast for Summit updated regularly?

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

Now · 12:01 AM

Summit Weather & Hourly Forecast

United States · South Dakota · 57266

68°F

Partly cloudy night

Feels like: 68°F

💧 Humidity 71% 🌡 Pressure 29.91 inHg 💨 Wind 11 mph 👁 Visibility 6.2 mi ☁ Clouds 34% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:53 AM 🌇 Sunset 8:01 PM

Hourly Forecast for Summit

Today

1:00 AM

Partly cloudy night

68° 💧 None 💨 11 mph H 69%29.91 inHg

4:00 AM

Overcast night

64° 💧 None 💨 8 mph H 69%29.97 inHg

7:00 AM

Light rain

62° 💧 0.03 in 💨 9 mph H 72%29.91 inHg

10:00 AM

Light rain

62° 💧 0.12 in 💨 11 mph H 81%29.94 inHg

1:00 PM

Light rain

77° 💧 0.02 in 💨 13 mph H 65%29.94 inHg

4:00 PM

Sunny

85° 💧 None 💨 14 mph H 38%29.85 inHg

7:00 PM

Sunny

78° 💧 None 💨 15 mph H 45%29.85 inHg

10:00 PM

Clear night

71° 💧 None 💨 14 mph H 66%29.91 inHg

Tomorrow

1:00 AM

Mostly clear night

67° 💧 None 💨 10 mph H 76%29.91 inHg

4:00 AM

Overcast night

66° 💧 None 💨 7 mph H 77%29.88 inHg

7:00 AM

Overcast

65° 💧 None 💨 7 mph H 95%29.91 inHg

10:00 AM

Light rain

65° 💧 0.01 in 💨 11 mph H 58%29.91 inHg

1:00 PM

Light rain

76° 💧 0.03 in 💨 3 mph H 58%29.91 inHg

4:00 PM

Overcast

85° 💧 0.01 in 💨 4 mph H 52%29.88 inHg

7:00 PM

Light rain

67° 💧 0.04 in 💨 17 mph H 95%29.91 inHg

10:00 PM

Overcast night

66° 💧 None 💨 14 mph H 98%29.88 inHg

Today

1:00 AM

Partly cloudy night

68° 💧 None 💨 11 mph H 69%29.91 inHg

2:00 AM

Mostly cloudy night

68° 💧 None 💨 12 mph H 67%29.91 inHg

3:00 AM

Mostly cloudy night

66° 💧 None 💨 10 mph H 67%29.94 inHg

4:00 AM

Overcast night

64° 💧 None 💨 8 mph H 69%29.97 inHg

5:00 AM

Overcast night

62° 💧 None 💨 9 mph H 74%29.94 inHg

6:00 AM

Overcast night

62° 💧 None 💨 13 mph H 77%29.91 inHg

7:00 AM

Light rain

62° 💧 0.01 in 💨 9 mph H 72%29.91 inHg

8:00 AM

Light rain

62° 💧 0.02 in 💨 5 mph H 83%29.94 inHg

9:00 AM

Light rain

61° 💧 0.00 in 💨 10 mph H 84%29.94 inHg

10:00 AM

Light rain

62° 💧 0.02 in 💨 11 mph H 81%29.94 inHg

11:00 AM

Moderate rain

63° 💧 0.05 in 💨 13 mph H 75%29.94 inHg

12:00 PM

Moderate rain

67° 💧 0.05 in 💨 13 mph H 72%29.94 inHg

1:00 PM

Light rain

77° 💧 0.02 in 💨 13 mph H 65%29.94 inHg

2:00 PM

Sunny

81° 💧 None 💨 14 mph H 52%29.91 inHg

3:00 PM

Sunny

83° 💧 None 💨 15 mph H 43%29.88 inHg

4:00 PM

Sunny

85° 💧 None 💨 14 mph H 38%29.85 inHg

5:00 PM

Sunny

85° 💧 None 💨 14 mph H 36%29.85 inHg

6:00 PM

Sunny

83° 💧 None 💨 13 mph H 36%29.83 inHg

7:00 PM

Sunny

78° 💧 None 💨 15 mph H 45%29.85 inHg

8:00 PM

Clear night

75° 💧 None 💨 14 mph H 67%29.88 inHg

9:00 PM

Clear night

72° 💧 None 💨 14 mph H 67%29.88 inHg

10:00 PM

Clear night

71° 💧 None 💨 14 mph H 66%29.91 inHg

11:00 PM

Clear night

69° 💧 None 💨 13 mph H 69%29.91 inHg

Tomorrow

12:00 AM

Clear night

68° 💧 None 💨 11 mph H 73%29.91 inHg

1:00 AM

Mostly clear night

67° 💧 None 💨 10 mph H 76%29.91 inHg

2:00 AM

Overcast night

67° 💧 None 💨 10 mph H 75%29.91 inHg

3:00 AM

Overcast night

66° 💧 None 💨 8 mph H 74%29.91 inHg

4:00 AM

Overcast night

66° 💧 None 💨 7 mph H 77%29.88 inHg

5:00 AM

Overcast night

66° 💧 None 💨 7 mph H 80%29.91 inHg

6:00 AM

Overcast night

66° 💧 None 💨 6 mph H 88%29.91 inHg

7:00 AM

Overcast

65° 💧 None 💨 7 mph H 95%29.91 inHg

8:00 AM

Overcast

65° 💧 None 💨 9 mph H 89%29.91 inHg

9:00 AM

Overcast

64° 💧 None 💨 12 mph H 69%29.91 inHg

10:00 AM

Light rain

65° 💧 0.01 in 💨 11 mph H 58%29.91 inHg

11:00 AM

Overcast

66° 💧 None 💨 12 mph H 59%29.91 inHg

12:00 PM

Overcast

68° 💧 None 💨 12 mph H 52%29.88 inHg

1:00 PM

Light rain

76° 💧 0.02 in 💨 3 mph H 58%29.91 inHg

2:00 PM

Light rain

79° 💧 0.01 in 💨 8 mph H 67%29.91 inHg

3:00 PM

Overcast

80° 💧 None 💨 4 mph H 64%29.88 inHg

4:00 PM

Overcast

85° 💧 None 💨 4 mph H 52%29.88 inHg

5:00 PM

Overcast

76° 💧 None 💨 17 mph H 73%29.85 inHg

6:00 PM

Light rain

72° 💧 0.01 in 💨 19 mph H 85%29.91 inHg

7:00 PM

Light rain

67° 💧 0.01 in 💨 17 mph H 95%29.91 inHg

8:00 PM

Light rain

65° 💧 0.01 in 💨 15 mph H 97%29.91 inHg

9:00 PM

Light rain

65° 💧 0.02 in 💨 14 mph H 99%29.91 inHg

10:00 PM

Overcast night

66° 💧 None 💨 14 mph H 98%29.88 inHg

11:00 PM

Overcast night

67° 💧 None 💨 15 mph H 93%29.88 inHg

Monday

12:00 AM

Overcast night

66° 💧 None 💨 12 mph H 94%29.88 inHg

1:00 AM

Mostly cloudy night

66° 💧 None 💨 9 mph H 97%29.88 inHg

2:00 AM

Overcast night

65° 💧 None 💨 7 mph H 98%29.88 inHg

3:00 AM

Overcast night

64° 💧 None 💨 9 mph H 98%29.88 inHg

4:00 AM

Overcast night

63° 💧 None 💨 9 mph H 99%29.88 inHg

5:00 AM

Overcast night

63° 💧 None 💨 9 mph H 98%29.88 inHg

6:00 AM

Light rain

64° 💧 0.01 in 💨 9 mph H 98%29.88 inHg

7:00 AM

Light rain

64° 💧 0.00 in 💨 9 mph H 97%29.88 inHg

8:00 AM

Partly cloudy

66° 💧 None 💨 10 mph H 94%29.88 inHg

9:00 AM

Partly cloudy

70° 💧 None 💨 13 mph H 85%29.85 inHg

10:00 AM

Mostly cloudy

74° 💧 None 💨 16 mph H 73%29.83 inHg

11:00 AM

Mostly cloudy

81° 💧 None 💨 17 mph H 54%29.80 inHg

12:00 PM

Mostly cloudy

86° 💧 None 💨 20 mph H 44%29.77 inHg

1:00 PM

Mostly cloudy

88° 💧 None 💨 22 mph H 42%29.74 inHg

2:00 PM

Overcast

86° 💧 None 💨 22 mph H 44%29.74 inHg

3:00 PM

Overcast

92° 💧 None 💨 23 mph H 36%29.71 inHg

4:00 PM

Overcast

92° 💧 None 💨 24 mph H 34%29.68 inHg

5:00 PM

Overcast

91° 💧 None 💨 20 mph H 37%29.68 inHg

6:00 PM

Light rain

83° 💧 0.01 in 💨 18 mph H 54%29.68 inHg

7:00 PM

Light rain

76° 💧 0.02 in 💨 12 mph H 75%29.65 inHg

8:00 PM

Light rain

74° 💧 0.01 in 💨 9 mph H 80%29.68 inHg

9:00 PM

Light rain

73° 💧 0.04 in 💨 26 mph H 79%29.71 inHg

10:00 PM

Light rain

72° 💧 0.01 in 💨 22 mph H 77%29.68 inHg

11:00 PM

Moderate rain

71° 💧 0.05 in 💨 28 mph H 89%29.74 inHg

Tuesday

12:00 AM

Light rain

71° 💧 0.02 in 💨 22 mph H 89%29.74 inHg

1:00 AM

Overcast night

72° 💧 None 💨 21 mph H 82%29.71 inHg

2:00 AM

Overcast night

73° 💧 None 💨 24 mph H 76%29.68 inHg

3:00 AM

Overcast night

74° 💧 None 💨 22 mph H 72%29.68 inHg

4:00 AM

Overcast night

74° 💧 None 💨 22 mph H 75%29.68 inHg

5:00 AM

Overcast night

74° 💧 None 💨 21 mph H 76%29.68 inHg

6:00 AM

Overcast night

73° 💧 None 💨 20 mph H 75%29.68 inHg

7:00 AM

Overcast

73° 💧 None 💨 19 mph H 74%29.68 inHg

8:00 AM

Overcast

74° 💧 None 💨 18 mph H 72%29.71 inHg

9:00 AM

Overcast

77° 💧 None 💨 20 mph H 65%29.71 inHg

10:00 AM

Mostly cloudy

82° 💧 None 💨 23 mph H 48%29.71 inHg

11:00 AM

Mostly cloudy

82° 💧 None 💨 21 mph H 41%29.77 inHg

12:00 PM

Mostly cloudy

83° 💧 None 💨 20 mph H 32%29.80 inHg

1:00 PM

Mostly cloudy

85° 💧 None 💨 17 mph H 27%29.80 inHg

2:00 PM

Sunny

87° 💧 None 💨 19 mph H 22%29.80 inHg

3:00 PM

Partly cloudy

87° 💧 None 💨 20 mph H 21%29.83 inHg

4:00 PM

Partly cloudy

86° 💧 None 💨 19 mph H 21%29.83 inHg

5:00 PM

Mostly cloudy

86° 💧 None 💨 18 mph H 20%29.83 inHg

6:00 PM

Mostly cloudy

84° 💧 None 💨 18 mph H 21%29.85 inHg

7:00 PM

Partly cloudy

81° 💧 None 💨 15 mph H 26%29.85 inHg

8:00 PM

Clear night

75° 💧 None 💨 12 mph H 35%29.91 inHg

9:00 PM

Clear night

71° 💧 None 💨 10 mph H 41%29.94 inHg

10:00 PM

Clear night

67° 💧 None 💨 9 mph H 48%30.00 inHg

11:00 PM

Clear night

65° 💧 None 💨 8 mph H 52%30.00 inHg

In Summit and, more broadly, across the state of South Dakota: The evening will be characterized by mostly cloudy skies with temperatures remaining mild to warm, ranging from 80 to 84 degrees Fahrenheit. There is a chance of light rain, with possible accumulation around 0.01 inches, and the probability reaching up to 55%. Winds will be moderate, coming from the southwest at up to 15 mph, with gusts reaching 26 mph. Conditions could be somewhat unsettled during the next few hours, so it’s a good idea to stay alert for brief showers or gusty winds as the night progresses. Temperatures are expected to gradually cool later tonight, but remaining comfortably mild for this time of year.

15-Day Weather Outlook for Summit

Saturday, Sep 5Sat Sep 5

Moderate rain 85°/61° 💧 0.17 in 💨 15 mph

TomorrowTomorrow

Light rain 85°/64° 💧 0.09 in 💨 19 mph

Monday, Sep 7Mon Sep 7

Moderate rain 92°/63° 💧 0.14 in 💨 28 mph

Tuesday, Sep 8Tue Sep 8

Light rain 86°/67° 💧 0.02 in 💨 23 mph

Wednesday, Sep 9Wed Sep 9

Sunny 81°/57° 💧 None 💨 13 mph

Thursday, Sep 10Thu Sep 10

Light rain 86°/57° 💧 0.06 in 💨 18 mph

Friday, Sep 11Fri Sep 11

Light rain 87°/62° 💧 0.04 in 💨 16 mph

Saturday, Sep 12Sat Sep 12

Light rain 99°/67° 💧 0.01 in 💨 20 mph

Sunday, Sep 13Sun Sep 13

Light rain 81°/62° 💧 0.06 in 💨 15 mph

Monday, Sep 14Mon Sep 14

Light rain 89°/69° 💧 0.02 in 💨 19 mph

Tuesday, Sep 15Tue Sep 15

Moderate rain 84°/67° 💧 0.46 in 💨 30 mph

Wednesday, Sep 16Wed Sep 16

Light rain 67°/51° 💧 0.01 in 💨 23 mph

Thursday, Sep 17Thu Sep 17

Sunny 61°/43° 💧 None 💨 21 mph

Friday, Sep 18Fri Sep 18

Overcast 51°/35° 💧 None 💨 11 mph

Saturday, Sep 19Sat Sep 19

Mostly cloudy 63°/42° 💧 None 💨 12 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Summit

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Summit

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 AM

PM2.5 Fine particles Good 7,7µg/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 8,5µg/m³

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

O₃ Ozone Fair 63,9µg/m³

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

NO₂ Nitrogen dioxide Good 1,8µg/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 Summit

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 6,6High —Unavailable

Tomorrow UV 6,9High 🙂Fair

Sunday UV 7,0High 🙂Fair

Monday UV 6,2High 🙂Fair

Tuesday UV 6,5High 🙂Fair

Wednesday UV 7,0High —Unavailable

Thursday UV 6,0High —Unavailable

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.

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 Summit

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SUMMIT, SOUTH DAKOTA

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 1:00 AM–2:00 AM.

73/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 9:45 PM–5:10 AM

☁ Cloud cover 36% Real hourly forecast for the best viewing hour.

☾ Moonlight 42% Last Quarter · Moon about 8° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 39° 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 min45%

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

AUG 28–SEP 5

AurigidsStart AUG 28 · Peak SEP 1 · End SEP 5 · ZHR 6 · 80% Moon at peak

ACTIVE NOW

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

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 Summit were last refreshed today at 11:44 PM. The current forecast period extends through 06/09/2026 at 10:00 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.